WO2024020803A1

WO2024020803A1 - Atomization device, porous atomization core, and method for manufacturing porous atomization core

Info

Publication number: WO2024020803A1
Application number: PCT/CN2022/108024
Authority: WO
Inventors: 陈平
Original assignee: 深圳市华诚达精密工业有限公司
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2024-02-01

Abstract

An atomization device, a porous atomization core (1), and a method for manufacturing a porous atomization core (1). The method for manufacturing a porous atomization core (1) comprises the following steps: attaching a heating body (12) to an outer surface of a fixing element (2), wherein the fixing element (2) is made of a high-temperature degradable material and is provided with a recess (21) on a surface thereof, and a heating circuit (123) is located outside the recess (21); placing the heating body (12) and the fixing element (2) into a mold cavity (3) to create a cavity (H) between the mold cavity (3) and the fixing element (2), wherein the heating body (12) is located inside the cavity (H); injecting a slurry into the cavity (H) to coat the heating body (12), and removing the mold cavity (3) once the slurry is cured, so as to obtain an atomization blank (4) with the fixing element (2); and sintering the atomization blank (4) while the fixing element (2) is burnt away to obtain the porous atomization core (1). The heating body (12) is supported on the fixing element (2), and is less prone to deformation, thereby ensuring the uniformity of the embedment depth in a substrate (11) after sintering, and also ensuring the balance of the temperature when the atomization core (1) heats an atomization medium so as to ensure the vapor taste. After the slurry is sintered and cured, the fixing element (2) reacts with air in a sintering furnace at a high temperature and is burnt away during the high-temperature stage of sintering.

Description

Atomizing device, porous atomizing core and method of making porous atomizing core

Technical field

The present invention relates to the field of atomization, and more specifically, to an atomization device, a porous atomization core, and a method for making the porous atomization core.

Background technique

The electronic atomization device is a device that uses electric heating to heat the atomization liquid until it atomizes and evaporates to produce aerosol. It is currently widely used in the field of electronic atomization.

The core of the electronic atomization device is the heated atomizing core. The heated atomizing core is mainly composed of two parts: a liquid-conducting material with a porous structure and a heating element. In this field, the flat mesh heating element is wound around liquid-conducting cotton. There are many applications in materials, but it has not been applied in the field of porous ceramics. The main reason is that the strength of the flat mesh heating element is poor, and it is difficult to ensure the consistency of its molding during winding molding. Furthermore, the heating element needs to be placed in the mold. Inject porous ceramic slurry and then sinter it into shape.

The heating element has poor strength, is easily deformed, has low efficiency, and has a low yield. Therefore, it is necessary to study a columnar porous ceramic structure using a mesh heating element to make it easy to produce, have good consistency, and not easily deformed. High production efficiency and high yield rate.

technical problem

The technical problem to be solved by the present invention is to provide an atomizing device, a porous atomizing core and a method for manufacturing the porous atomizing core in view of the above-mentioned defects of the prior art.

Technical solutions

The technical solution adopted by the present invention to solve the technical problem is to construct a porous atomizing core, which is characterized in that it includes a porous base material and a heating element;

The heating element includes a first electrode, a second electrode, at least one heating circuit connected between the first electrode and the second electrode, and several supporting parts respectively connected to the heating circuit;

An atomization surface is formed on the heating element, the atomization surface includes a support area and an atomization area, and the support area is lower than the atomization area;

The heating circuit is embedded in the atomization area, the supporting part is embedded in the supporting area, and the embedded depth of the heating circuit is greater than the embedded depth of the supporting part.

In some embodiments, the support portion and the heating circuit intersect to form a mesh-shaped heating body.

In some embodiments, the heating circuit is buried outside the base material to a depth of 0.1-0.8 mm.

In some embodiments, the base material is provided with an airflow hole for airflow to pass through, the heating element is embedded in the inner wall of the airflow hole, the heating circuit is curved along the circumferential direction, and the atomization area, The support areas are respectively arranged along the circumferential direction, and the inner diameter of the atomization area is smaller than the inner diameter of the support area.

In some embodiments, the support portion is exposed from the support area.

In some embodiments, the first electrode and the second electrode are located in the base material, and the porous atomization core further includes two leads connected to the first electrode and the second electrode respectively, and the leads Extract the substrate.

An atomizing device includes an atomizer, and the atomizer includes the porous atomizing core.

A method for making the porous atomizing core includes the following steps:

The heating element is attached to the outer surface of the fixing piece. The fixing piece is made of high-temperature degradable material and has a recessed portion on the surface. The heating circuit is located outside the recessed portion;

Put the heating element and the fixing piece into the mold cavity, form a mold cavity between the mold cavity and the fixing piece, and the heating element is located in the mold cavity;

Inject slurry into the mold cavity to cover the heating element, and after the slurry solidifies, remove the mold cavity to obtain an atomized blank with the fixing member;

The atomization blank is sintered and the fixing member is burned away to obtain a porous atomization core.

In some embodiments, the fixing member is cylindrical, and fitting the heating element to the outer surface of the fixing member further includes the following steps:

The heating circuit is aligned with the recessed part of the fixing part. After the supporting part of the heating element fits the outer wall surface of the fixing part, the heating element is curled and fixed to the fixing part.

In some embodiments, the heating circuits are arranged at intervals, at least one side of the heating circuits is connected to the support portion, and a plurality of recessed portions corresponding to the support portions are spaced on the fixing member.

In some embodiments, the mold cavity includes a base for the fixture to be plugged into, and a first template and a second template that are molded together from both sides of the fixture. At least one of the mold cavity is provided with an injection port for slurry injection. Putting the heating element and fixing piece into the mold cavity also includes the following steps:

Insert the fixing piece onto the base, clamp the fixing piece after the first and second templates are closed to form the cavity;

Inject slurry into the mold cavity through the injection port.

In some embodiments, sintering the atomized blank further includes the following steps:

The atomized blank is placed on a sintering carrier, covered with embedded sintering powder, and then sintered.

In some embodiments, the slurry is formed by mixing ceramic powder, pore-forming agent, and adhesive; or, the slurry is formed by mixing glass powder, pore-forming agent, and adhesive.

In some embodiments, the adhesive includes at least one of paraffin and plastic.

In some embodiments, the material of the fixing member is at least one of wood, plastic, starch, and plant fiber materials.

beneficial effects

Implementing the atomization device, the porous atomization core and the manufacturing method of the porous atomization core of the present invention have the following beneficial effects: the heating element is on a fixed piece and is supported and is not easily deformed. After the slurry is sintered and solidified, the final fixing part can be burned by the reaction between the high temperature and the air in the sintering furnace in the high-temperature section of sintering, such as above 500 degrees. The heating element is placed with support and positioning by fixing parts, which ensures the consistency of the depth of being buried in the base material after sintering, and also ensures the temperature balance when the atomizing core heats the atomizing medium, ensuring the taste of the smoke.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and examples. In the accompanying drawings:

Figure 1 is a schematic three-dimensional structural diagram of a porous atomizing core in an embodiment of the present invention;

Figure 2 is a schematic diagram of the exploded structure of the base material and heating element of the porous atomizing core in Figure 1;

Figure 3 is a front schematic view of the heating element in Figure 2 when it is deployed;

Figure 4 is a schematic cross-sectional view of the porous atomizing core in Figure 1;

Figure 5 is a schematic cross-sectional view of the porous atomizing core in Figure 1 from another direction;

Figure 6 is a three-dimensional schematic view of the fixing member;

Figure 7 is a three-dimensional schematic view of the heating element when it is bent and wrapped to fit to the side of the fixing element;

Figure 8 is a schematic view of the fixing component with the heating component in Figure 7 before it is inserted into the base;

Figure 9 is a schematic diagram of the fixing component with the heating component in Figure 6 after it is inserted into the base;

Figure 10 is a schematic diagram of the first template and the second template of the mold cavity before they are closed;

Figure 11 is a schematic cross-sectional view of the first template and the second template after they are molded together;

Figure 12 is a schematic three-dimensional view of the atomization blank with fixing parts;

Figure 13 is a schematic cross-sectional view along the side and passing through the heating circuit in Figure 12;

FIG. 14 is a schematic cross-sectional view along the side direction and passing through the support part in FIG. 12 .

Best Mode of Carrying Out the Invention

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in Figure 1, the atomization device in a preferred embodiment of the present invention includes an atomizer. The atomizer includes a porous atomization core 1, a liquid storage chamber, etc. The liquid atomization medium can be injected into the liquid storage chamber. The porous mist The core 1 can absorb the liquid atomization medium, and heat and atomize the adsorbed liquid atomization medium after being powered on.

As shown in FIGS. 1 to 3 , the porous atomizing core 1 includes a porous base material 11 and a heating element 12 . The heating element 12 includes a first electrode 121 and a second electrode 122 , which are connected between the first electrode 121 and the second electrode 122 . There are two heating lines 123 between them, and several supporting parts 124 respectively connected to the heating lines 123. The heating lines 123 can be one or multiple. When there are two or more heating lines 123, they should be spaced apart from each other.

Preferably, the support part 124 is connected between two adjacent heating circuits 123 to connect each heating circuit 123. The support part 124 and the heating circuits 123 intersect to form a mesh-shaped heating element 12.

As shown in FIGS. 4 and 5 , preferably, an atomization surface A is formed on the heating element 12 . The atomization surface A includes a support area 112 and an atomization area 113 . The support area 112 is lower than the atomization area 113 .

The heating circuit 123 is embedded in the base material 11 , the supporting part 124 is embedded in the supporting area 112 , and the embedded depth of the heating circuit 123 is greater than the embedded depth of the supporting part 124 . The heating circuit 123 of the heating element 12 is slightly embedded in the base material 11, and the embedding depth is greater than the embedding depth of the support portion 124. This can ensure the bonding strength of the heating element 12 and the base material 11 and prevent loosening. This depth is optimal between 0.1-0.8mm to achieve better atomization effect.

As shown in FIGS. 1 to 5 , in this embodiment, the porous atomizing core 1 is mainly composed of a porous ceramic base material 11 and a metal heating element 12 . The porous ceramic material powder material is injection molded. The heating element 12 is made of a metal sheet, generally with a thickness between 0.03-0.2mm. The heating circuit is formed by corrosion, laser cutting, stamping, etc., and is then made by welding the lead 13, crimping, etc.

Preferably, the first electrode 121 and the second electrode 122 are located in the base material 11. The porous atomization core 1 also includes two leads 13 connected to the first electrode 121 and the second electrode 122 respectively. The leads 13 lead out of the base material 11. It is electrically connected to the power supply device to supply power to the heating element 12 .

Among them, the heating circuit 123 part of the heating element 12 is the core of the heating element 12, and when the electrodes at both ends are powered, heat is generated due to the resistance heating effect. The heating circuit 123 part needs to be in good contact with the porous ceramic base material 11 to ensure that there is liquid in the heating element 12 part and no aldehydes will be produced by dry burning.

Because the support part 124 is not between conductive circuits, it does not generate heat itself. Only a small part of the heat of the heating element 12 will be conducted to the support part 124. Its function is mainly to ensure the stability of the structural strength of the heating element 12, so that the heat can be generated. The angle and spacing between the body 12 lines are uniform and non-deformable.

The first electrode 121 and the second electrode 122 of the heating element 12 are mainly used for welding the lead 13. Generally, they are all buried in the porous ceramic base material 11 so that the lead 13 can withstand greater pulling force. The lead 13 part mainly utilizes its flexible characteristics to facilitate contact with external power sources to achieve electrical connection.

Preferably, in this embodiment, the base material 11 is provided with an airflow hole 111 for airflow to pass through, and the heating element 12 is embedded in the inner wall surface of the airflow hole 111. When the heating element 12 generates heat, the airflow hole 111 of the base material 11 is The atomization medium inside is heated and atomized, and the gas in the airflow hole 111 flows, taking away the atomized smoke.

Further, the heating circuit 123 is bent along the circumferential direction of the airflow hole 111, so that each position in the circumferential direction of the airflow hole 111 is heated more evenly. In addition, the atomization area 113 and the support area 112 are respectively arranged in the circumferential direction, and the inner diameter of the atomization area 113 is smaller than The inner diameter of the support area 112 and the support part 124 can be exposed to the support area 112. The support area 112 is formed by a mold, supports the support part 124 during molding, and avoids the heating circuit 123, allowing the slurry to coat the heating circuit 123.

In other embodiments, the base material 11 can also be plate-shaped or arc-shaped. The heating element 12 is embedded on one side of the base material 11 . The airflow flows from the side of the base material 11 where the heating element 12 is located to heat the heating element 12 . The atomized smoke is taken away.

In some embodiments, the method of making the porous atomization core 1 includes the following steps:

As shown in FIGS. 6 and 7 , the heating element 12 is attached to the outer surface of the fixing part 2 . The fixing part 2 is made of high-temperature degradable material and has a recess 21 on the surface. The heating circuit 123 is located outside the recess 21 .

As shown in Figures 8 to 11, the heating element 12 and the fixing part 2 are placed into the mold cavity 3, and a cavity H is formed between the mold cavity 3 and the fixing part 2, and the heating element 12 is located in the cavity H.

As shown in Figure 11, the slurry is injected into the mold cavity H to cover the heating element 12. After the slurry solidifies, the mold cavity 3 is removed to obtain the atomized blank 4 with the fixing member 2 as shown in Figure 12.

As shown in FIGS. 13 and 14 , after the slurry is filled into the recessed portion 21 and solidified, the solidified slurry is filled between the heating circuit 123 and the fixing piece 2 , and the supporting portion 124 is in contact with the outer surface of the fixing piece 2 .

The atomization blank 4 is sintered and the fixing part 2 is burned away to obtain the porous atomization core 1 .

Sintering the fixings 2 together can effectively avoid the deformation of the heating element 12 during the debinding period during the sintering process. The cooled and solidified porous ceramic atomized blank 4 will melt again as it is heated during the sintering process. , this temperature is generally between 70 and 200 degrees Celsius. Different adhesives may melt differently. At this time, the heating element 12 has no support and is easily deformed.

The heating element 12 of this patent is on the fixing member 2, and is supported and not easily deformed. After the slurry is sintered and solidified, the final fixing member 2 can be burned by the reaction between the high temperature and the air in the sintering furnace in the high temperature section of sintering, such as above 500 degrees.

The heating element 12 is placed with support and positioning by the fixing piece 2, which ensures the consistency of the depth of being embedded in the base material 11 after sintering, and also ensures the temperature balance when the atomizing core heats the atomizing medium, and ensures the taste of the smoke.

Further, when sintering the atomized blank 4, the atomized blank 4 is placed on a sintering carrier, covered with buried sintering powder, and then sintered.

The slurry is formed by mixing ceramic powder, pore-forming agent, and adhesive; in other embodiments, the slurry is formed by mixing glass powder, pore-forming agent, and adhesive, and the adhesive may include at least one of paraffin and plastic. kind.

The fixing piece 2 is made of high-temperature degradable materials, such as wood, plastic and other combustible volatile substances. Preferably, the fixing piece 2 is made of wood or plastic, which can be burned during high-temperature sintering.

As shown in FIGS. 7 to 11 , the heating area portion of the heating circuit 123 is aligned with the recessed portion 21 of the fixing member 2 , and the supporting portion 124 of the heating element 12 is curled and formed close to the outer periphery of the fixing member 2 . The heating element 12 is fixed on the fixing piece 2. Glue can be used here. For example, if the fixing piece 2 is made of plastic, welding or other methods can be used, without limitation, so that the heating element 12 is fixed on the fixing piece 2. The shape of the heating element 12 is fixed and the curl size is precise.

The heating circuits 123 are arranged at intervals, and at least one side of the heating circuits 123 is connected to a support portion 124 . A plurality of recessed portions 21 corresponding to the support portions 124 are spaced on the fixing member 2 .

The mold cavity 3 includes a base 31 for the fixing part 2 to be plugged into, and a first template 32 and a second template 33 that are molded together from both sides of the fixing part 2. At least one of the first template 32 and the second template 33 is provided with a The fixing part 2 is inserted into the base 31 through the injection port M for slurry injection. After the first template 32 and the second template 33 are closed, the fixing part 2 is clamped to form a cavity H. The mold cavity H is formed through the injection port M. Cavity H is filled with slurry.

The porous ceramic slurry can fill the gap between the heating element 12 and the fixing part 2, and completely wrap the heating element 12 in the porous ceramic base material 11, which can effectively prevent the heating element 12 from loosening, and also allow the heating element 12 to be in place There will be no deviation during the sintering process and it will be more tightly covered by the base material 11 .

After fixing the heating element 12 and the fixing part 2, the mold installation is convenient and efficient, and there is no problem of deformation of the heating element 12. The heating element 12 is equivalent to the support strength of the fixing part 2, which greatly improves the assembly efficiency. . Moreover, there is no need to use the lead 13 for positioning, and the heating element 12 is positioned accurately.

Inject porous ceramic slurry into the cavity H, allow the heating element 12 to be embedded in the slurry and then solidify. After solidification, the mold is demoulded to obtain the formed porous ceramic atomization component blank, which is sintered to form the porous atomization core 1.

The heating element 12 has a stable structure after molding and is not easily deformed when transported and loaded into the mold cavity 3. The molding efficiency is high, the product is not easily damaged and deformed during the sintering process, and the finished atomizing core has precise dimensions. The microstructure of the atomization surface A of the porous atomizing core 1 can be ensured, and the heating element 12 and the porous ceramic base material 11 can be prevented from being separated, so that the heating circuit 123 can fully contact the base material 11 and the position within the base material 11 is stable.

Preferably, the fixing part 2 is in the shape of a column. The method of this patent is to roll the heating element 12 into shape and then fix it on the fixing part 2. Some structures are designed on the fixing part 2 so that the heating element 12 can be fixed on the fixing part 2 first. After the porous ceramic slurry completely wraps and fixes the heating area of the heating element 12, the fixing part 2, the heating element 12, and the porous ceramic substrate 11 are then put into the sintering furnace for sintering. The material of the fixing part 2 can be made of at least one of high-temperature degradable materials such as wood, plastic, starch, plant fiber materials, etc. The high temperature of the sintering furnace during the sintering and molding of porous ceramics causes the fixing part 2 to burn or degrade at high temperature. Only the heating element 12 and the porous ceramic substrate 11 are left.

In this embodiment, the porous ceramic substrate 11 has a columnar structure with airflow holes 111 penetrating up and down. The inner wall of the airflow hole 111 is its atomization surface A, and the heating element 12 is embedded in the atomization surface A. The support area 112 that exposes the support portion 124 forms a step structure in the atomization surface A, and the inner holes in the heating area are smaller than the inner holes in the non-heating area, so that the heating area of the heating element 12 is completely embedded in the porous ceramic substrate 11 instead of The heating area is partially embedded in the surface of the airflow hole of the porous ceramic substrate 11, and the heating element 12 is buried to a depth of between 0.1-0.8 mm.

It can be understood that the above technical features can be used in any combination without limitation.

The above are only examples of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present invention, or directly or indirectly applied to other related technologies fields are equally included in the scope of patent protection of the present invention.

Claims

A porous atomization core, characterized by including a porous base material (11) and a heating element (12);

The heating element (12) includes a first electrode (121), a second electrode (122), at least one heating line (123) connected between the first electrode (121) and the second electrode (122), And several support parts (124) respectively connected to the heating circuits (123);

An atomization surface (A) is formed on the heating element (12). The atomization surface (A) includes a support area (112) and an atomization area (113). The support area (112) is lower than the Atomization area (113);

The heating circuit (123) is embedded in the atomization area (113), the supporting part (124) is embedded in the supporting area (112), and the embedded depth of the heating circuit (123) is greater than the The embedded depth of the support part (124).
The porous atomizing core according to claim 1, characterized in that the support part (124) and the heating circuit (123) intersect to form a mesh-shaped heating element (12).
The porous atomization core according to claim 1, characterized in that the heating circuit (123) is buried outside the base material (11) to a depth of 0.1-0.8 mm.
The porous atomization core according to claim 1, characterized in that the base material (11) is provided with airflow holes (111) for airflow to pass through, and the heating element (12) is embedded in the airflow holes. (111), the heating circuit (123) is curved in the circumferential direction, the atomization area (113) and the support area (112) are respectively arranged in the circumferential direction, and the inner diameter of the atomization area (113) is smaller than The inner diameter of the support area (112).
The porous atomization core according to any one of claims 1 to 4, characterized in that the support part (124) is exposed at the support area (112).
The porous atomizer core according to any one of claims 1 to 4, characterized in that the first electrode (121) and the second electrode (122) are located in the base material (11), and the porous atomizer The chemical core (1) also includes two leads (13) connected to the first electrode (121) and the second electrode (122) respectively, and the leads (13) lead out from the base material (11).
An atomization device, characterized in that it includes an atomizer, and the atomizer includes the porous atomization core (1) according to any one of claims 1 to 6.
A method for manufacturing a porous atomizing core according to any one of claims 1 to 6, characterized in that it includes the following steps:

The heating element (12) is attached to the outer surface of the fixing part (2). The fixing part (2) is made of high-temperature degradable material and has a depression (21) on the surface. The heating circuit (123) is located there. Outside the recessed portion (21);

Put the heating element (12) and the fixing part (2) into the mold cavity (3), forming a cavity (H) between the mold cavity (3) and the fixing part (2), and The heating element (12) is located in the mold cavity (H);

Inject slurry into the mold cavity (H) to cover the heating element (12). After the slurry solidifies, the mold cavity (3) is removed to obtain a mold with the fixing piece (2). Atomized blank (4);

The atomization blank (4) is sintered and the fixing part (2) is burned at the same time to obtain a porous atomization core (1).
The manufacturing method of a porous atomizing core according to claim 8, characterized in that the fixing part (2) is columnar, and fitting the heating element (12) to the outer surface of the fixing part (2) further includes the following: step:

The heating circuit (123) is aligned with the recessed part (21) of the fixing part (2). After the supporting part (124) of the heating element (12) fits the outer wall surface of the fixing part (2), The heating element (12) is curled and fixed to the fixing part (2).
The method of making a porous atomizing core according to claim 9, characterized in that the heating circuits (123) are arranged at intervals, and at least one side of the heating circuits (123) is connected to the support part (124), A plurality of recessed portions (21) corresponding to the supporting portions (124) are spaced on the fixing member (2).
The method of making a porous atomizing core according to claim 8, characterized in that the mold cavity (3) includes a base (31) for the fixing piece (2) to be plugged into, and a base (31) for the fixing piece (2) to be inserted into, and a base (31) for the fixing piece (2) to be inserted into the mold cavity (3). 2) The first template (32) and the second template (33) are closed on both sides. At least one of the first template (32) and the second template (33) is provided with an injection material for slurry injection. Mouth (M), placing the heating element (12) and fixing piece (2) into the mold cavity (3) also includes the following steps:

The fixing part (2) is inserted into the base (31). After the first template (32) and the second template (33) are closed, the fixing part (2) is clamped to form the mold. Cavity (H);

Inject slurry into the cavity (H) from the injection port (M).
The manufacturing method of a porous atomizing core according to claim 8, characterized in that sintering the atomizing blank (4) further includes the following steps:

The atomized blank (4) is placed on a sintering carrier, covered with buried sintering powder, and then sintered.
The method for making a porous atomizing core according to any one of claims 8 to 12, wherein the slurry is made of ceramic powder, a pore-forming agent, and a binder mixed together; or, the slurry is made of glass. It is formed by mixing powder, pore-forming agent and binder.
The method of making a porous atomizing core according to claim 13, wherein the binder includes at least one of paraffin and plastic.
The method of making a porous atomizing core according to any one of claims 8 to 12, characterized in that the material of the fixing member (2) is at least one of wood, plastic, starch, and plant fiber materials.