WO2023045600A1

WO2023045600A1 - Atomizing core, atomizer, aerosol generating device, and atomizing core processing method

Info

Publication number: WO2023045600A1
Application number: PCT/CN2022/111320
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: 2021-09-22
Filing date: 2022-08-10
Publication date: 2023-03-30

Abstract

An atomizing core, an atomizer, an aerosol generating device, and an atomizing core processing method. An atomization surface (11) is formed on at least part of the outer surface of a porous substrate (1), a heating member (2) is provided on the outer surface of the porous substrate (1), and the heating member (2) is bonded to the outer surface of the porous substrate (1) by means of a fixing member (3). At least part of the fixing member (3) is embedded and fixed inside the porous substrate (1), so that the heating member (2) can be tightly and firmly bonded to the outer surface of the porous substrate (1), the stability of the overall structure of the atomizing core is enhanced, and the heating member (2) does not fall off. In this way, the heating member (2) is bonded to the outer surface of the porous substrate (1) by means of the fixing member (3), and without a limit on the size of an inner hole of a columnar hollow ceramic, the arrangement area of the heating member (2) can be uniformly set according to the area of the outer surface of the porous substrate (1), so that the atomizing core has excellent properties of high heating rate, uniform temperature distribution and large heating area when working.

Description

Atomizing core, atomizer, aerosol generating device and atomizing core processing method

technical field

The invention belongs to the technical field of atomizing core processing and smoking simulation, and in particular relates to an atomizing core, an atomizer, an aerosol generating device and an atomizing core processing method.

Background technique

At present, the ceramic atomizing core used in the aerosol generating device is generally provided with a heating wire on the inner hole wall of the columnar hollow ceramic. Due to the small size of the inner hole of the hollow ceramic, it is usually necessary to use a very thin heating wire as the heating element, which has problems such as slow heating rate, uneven temperature distribution and small heating area, which causes the ceramic atomizing core to heat the atomized smoke. Insufficient quantity. Moreover, the structural stability of the ceramic atomizing core is poor, and the heating wire is easy to fall off from the inner hole wall of the hollow ceramic, which affects the service life of the ceramic atomizing core.

Contents of the invention

Based on the above-mentioned problems in the prior art, one of the purposes of the embodiments of the present invention is to provide an atomizing core in which the heating element is firmly bonded to the outer surface of the porous substrate through a fixing element, so as to enhance the stability of the overall structure of the atomizing core. The heating element is not easy to fall off, and the heating rate of the atomizing core is fast, the temperature distribution is uniform and the heating area is large when the atomizing core is working.

In order to achieve the above object, the technical solution adopted by the present invention is to provide an atomizing core for an atomizer, and the atomizing core includes:

A porous substrate, at least part of the outer surface forms an atomization surface for heating and atomizing the aerosol-forming substrate, and the porous substrate has a microporous structure that absorbs and stores the aerosol-forming substrate inside, and the microporous structure can dissipate the aerosol Forming the substrate is transported to the atomizing surface;

a heating element, disposed on the outer surface of the porous substrate, for heating and atomizing the aerosol-forming substrate transported to the atomizing surface; and

A fixing piece, used to fix the heating element on the outer surface of the porous matrix, the fixing piece is at least partially embedded and fixed inside the porous matrix, and the fixing piece is at least partially fixedly connected with the heating element .

Further, the outer contour of the porous matrix is arranged in a columnar shape, the porous matrix has a first end and a second end along its axial direction, the end surface of the first end forms the atomization surface, and the heating element is set on the atomized surface.

Further, the heating element includes an annular heating sheet arranged in the center, a first heating structure arranged in a concentric arc by several first arc-shaped heating sheets, and a concentric arc by several second arc-shaped heating sheets. The second heat generating structure is arranged, and the first heat generating structure and the second heat generating structure are centrally symmetrical with the ring center of the annular heat generating sheet as the center of symmetry, and the first heat generating structure and the second heat generating structure The structures are respectively electrically connected with the annular heating sheets.

Further, the first heating structure includes several first arc-shaped heating sheets, a first connecting sheet electrically connecting two adjacent first arc-shaped heating sheets, and a The second connecting piece electrically connected to the first arc-shaped heating sheet on the innermost side of the structure and the annular heating sheet; the second heating structure includes a plurality of the second arc-shaped heating sheets, and two adjacent A third connecting piece electrically connecting the two arc-shaped heating pieces, and a fourth connecting piece electrically connecting the second arc-shaped heating piece located at the innermost side of the second heating structure with the ring-shaped heating piece.

Further, the first heat generating structure includes several first arc-shaped heat generating sheets arranged in concentric circular arcs, and a first arc-shaped heat generating sheet located at the outermost side of the first heat generating structure is electrically connected to the first arc-shaped heat generating sheet. A lead wire; the second heating structure includes a plurality of the second arc-shaped heating sheets arranged in concentric arcs, and a first arc-shaped heating sheet electrically connected to the second arc-shaped heating sheet located at the outermost side of the second heating structure Two leads.

Further, the fixing piece includes a fixing section for being embedded and fixed inside the porous matrix and a connecting section connecting the heating element and the fixing section, and the extending direction of the fixing section is the same as that of the connecting section. The extending directions of each are at an angle to form a grapple-like structure embedded in the porous matrix.

Further, the number of the fixing parts is set to be multiple, and the fixing parts are arranged in a circular array.

Further, the outer contour of the porous matrix is arranged in a columnar shape, the porous matrix is provided with vent holes along its axial direction, and the end surface of the second end of the porous matrix is concavely provided with a liquid storage tank, and the liquid storage The aerosol-forming substrate in the trough can be transported to the atomizing surface via the microporous structure.

Based on the above-mentioned problems in the prior art, the second object of the embodiments of the present invention is to provide an atomizer having an atomizing core in any of the above solutions.

In order to achieve the above object, the technical solution adopted by the present invention is to provide an atomizer, including an atomization core and an atomization housing with an atomization cavity and a liquid storage cavity inside, and the atomization core is any one of the above-mentioned According to the atomizing core in the solution, the atomizing core is at least partially accommodated in the atomizing chamber, and the atomizing surface is located outside the liquid storage chamber.

Based on the above-mentioned problems in the prior art, the third object of the embodiments of the present invention is to provide an aerosol generating device having an atomizing core or an atomizer in any of the above solutions.

In order to achieve the above object, the technical solution adopted by the present invention is: provide an aerosol generating device, the aerosol generating device includes the atomizing core or the atomizer in any of the above solutions,

Compared with the prior art, the above one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects:

In the atomizing core, atomizer and aerosol generating device in the embodiment of the present invention, the atomizing core forms an atomizing surface on at least part of the outer surface of the porous substrate, and arranges a heating element on the outer surface of the porous substrate, and the heating element then It is bonded to the outer surface of the porous matrix through a fixing piece. Since at least part of the fixing part is embedded and fixed inside the porous matrix, and the fixing part and the porous ceramic green body are inlaid and bonded by high-temperature sintering process, the heating element can be tightly and firmly bonded to the outer surface of the porous matrix, and the atomizing core can be strengthened. The stability of the overall structure prevents the heating element from falling off. In this way, the heating element is combined with the outer surface of the porous matrix through the fixing piece, which is not limited by the small inner hole size of the columnar hollow ceramic, and there is no need to use a very fine heating wire as the heating element, and the arrangement area of the heating element can be adjusted according to the porous The size of the outer surface of the base body is uniformly arranged, which can make the atomizing core have the excellent performance of fast heating rate, uniform temperature distribution and large heating area when it is working.

Based on the above-mentioned problems in the prior art, the fourth object of the embodiments of the present invention is to provide a method for processing an atomizing core.

In order to achieve the above purpose, the technical solution adopted by the present invention is to provide a method for processing an atomizing core, which includes the following steps:

Weighing the raw materials for preparing the porous matrix, the raw materials for the porous matrix include the following components in parts by mass: ceramic powder 70% to 80%, paraffin wax 20% to 25%, and stearic acid 0% to 5%. The porous matrix is mixed with raw materials to form a ceramic slurry;

Fix the heating element with the fixing element in the forming mold according to the predetermined position, inject the ceramic slurry into the forming mold through a grouting machine, and after the ceramic slurry is formed into a ceramic green body, the heating element The fixing member can be embedded on the outer surface of the porous substrate to obtain a porous ceramic atomizing core body formed by inserting the heating element and the ceramic green body;

The porous ceramic atomizing core base body is subjected to wax discharge treatment, and then the porous ceramic atomization core base body is sintered and solidified after the wax discharge treatment, so that the heating element is firmly bonded to the outer surface of the porous base body surface to prepare the finished porous ceramic atomizing core.

Optionally, the processing method of the atomization core further includes the step of welding the electrode leads, and the step of welding the electrode leads includes: cleaning, drying and testing the finished porous ceramic atomization core, and then The first lead wire is welded to the first electrode welding point of the finished porous ceramic atomizing core, and the second lead wire is welded to the second electrode welding point of the finished porous ceramic atomizing core.

In the method for processing the atomizing core in the embodiment of the present invention, the ceramic green body is prepared through a slip-casting process. During the process of slip-casting the ceramic green body, the fixing part for fixing the heating element is embedded and fixed inside the ceramic green body. The fixing part and the porous ceramic green body are inlaid and combined through the sintering process, so that the heating part is tightly and firmly bonded to the outer surface of the porous substrate, and the stability of the overall structure of the atomizing core is enhanced, so that the heating part will not fall off. In this way, while the fixing part and the porous ceramic green body are inlaid and bonded through a sintering process, a porous matrix with a microporous structure inside can be prepared. Since the heating element embedded on the outer surface of the porous matrix is not limited by the small inner hole size of the columnar hollow ceramic, it is not necessary to use a very fine heating wire as the heating element, and the layout area of the heating element can be adjusted according to the size of the porous matrix. The size and uniform setting of the outer surface area can make the atomizing core have the excellent performance of fast heating rate, uniform temperature distribution and large heating area when working.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only of the present invention. For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative efforts.

Fig. 1 is a schematic diagram of a three-dimensional structure of an atomizing core provided by an embodiment of the present invention;

Fig. 2 is a schematic bottom view of the atomization core provided by the embodiment of the present invention;

Fig. 3 is the sectional structural representation of line A-A in Fig. 2;

Fig. 4 is a three-dimensional structural schematic diagram of a heating element provided by an embodiment of the present invention;

Fig. 5 is an exploded view of the atomization core provided by the embodiment of the present invention;

Figure 6 is a schematic bottom view of the porous matrix provided by the embodiment of the present invention;

Fig. 7 is a thermal imaging analysis diagram of the atomization core processed by the atomization core processing method in Example 1 of the present invention;

Fig. 8 is a graph showing the heating rate curve of the atomization temperature of the atomization core processed by the atomization core processing method in Example 1 of the present invention;

Fig. 9 is another curve diagram of the heating rate curve of the atomization temperature of the atomization core processed by the atomization core processing method in Example 1 of the present invention;

Fig. 10 is a thermal imaging analysis diagram of the atomization core processed by the atomization core processing method in Example 2 of the present invention;

Fig. 11 is a curve diagram of the temperature rise rate curve of the atomization temperature of the atomization core processed by the atomization core processing method in Example 2 of the present invention;

Fig. 12 is another curve diagram of the heating rate curve of the atomization temperature of the atomization core processed by the atomization core processing method in Example 2 of the present invention;

Fig. 13 is a thermal imaging analysis diagram of the atomization core processed by the atomization core processing method in Example 3 of the present invention;

Fig. 14 is a curve diagram of the heating rate curve of the atomization temperature of the atomization core processed by the atomization core processing method in Example 3 of the present invention;

Fig. 15 is another curve graph of the temperature rise rate of the atomization temperature of the atomization core processed by the atomization core processing method in Example 3 of the present invention;

Fig. 16 is a thermal imaging analysis diagram of the atomization core processed by the atomization core processing method of the comparative example of the present invention;

Fig. 17 is a curve diagram of the atomization temperature heating rate curve of the atomization core processed by the atomization core processing method of the comparative example of the present invention;

Fig. 18 is another graph showing the heating rate curve of the atomization temperature of the atomization core processed by the atomization core processing method in the comparative example of the present invention.

Wherein, each reference sign in the figure:

1-porous matrix; 11-atomization surface; 12-first end; 13-second end; 14-liquid storage tank; 15-air vent; 16-groove;

2-heating element; 21-ring heating piece; 22-first heating structure; 221-first arc heating piece; 222-first connecting piece; 223-second connecting piece; 224-first lead wire; 225-the first One electrode piece; 23-the second heating structure; 231-the second arc heating piece; 232-the third connecting piece; 233-the fourth connecting piece; 234-the second lead wire; 235-the second electrode piece;

3-fixing piece; 31-fixing section; 32-connecting section.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

It should be noted that when an element is referred to as being “connected to” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it may be mechanical connection or electrical connection; it may be direct connection or indirect connection through an intermediary, and it may be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, not all referring to the same embodiments. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments.

Please refer to FIGS. 1 to 5 together, and now the atomizing core provided by the embodiment of the present invention will be described. The atomizing core provided by the embodiment of the present invention is suitable for an atomizer of an aerosol generating device. Please refer to Fig. 1 and Fig. 2 together. The atomizing core provided by the embodiment of the present invention includes a porous base 1, a heating element 2 and a fixing element 3. At least part of the outer surface of the porous base 1 forms an atomizing surface 11, and the porous base 1 has a The microporous structure of the aerosol-forming substrate is adsorbed and stored, and the microporous structure can transmit the aerosol-forming substrate stored inside the porous substrate 1 to the atomizing surface 11 . Please refer to FIG. 1 and FIG. 2 together. The heating element 2 is arranged on the outer surface of the porous matrix 1 . In some of these embodiments, the heating element 2 is a heating sheet arranged in the shape of a diaphragm, and the thickness of the heating sheet is 0.1-0.16mm. Part 2 is bonded to the outer surface of porous matrix 1 . When in use, the porous substrate 1 can absorb and store the aerosol-forming substrate in the liquid storage chamber of the nebulizer through the microporous structure, and store the aerosol-forming substrate inside the porous substrate 1 through the microporous substrate. The pore structure is transmitted to the atomizing surface 11. Since the heating element 2 is arranged on the outer surface of the porous substrate 1, the heat generated after the heating element 2 is energized can heat and atomize the aerosol-forming substrate transmitted to the atomizing surface 11. Aerosol, the aerosol flows out from the outlet hole of the nebulizer for the user to inhale. Moreover, the fixing element 3 is at least partially embedded and fixed inside the porous matrix 1 , and the fixing element 3 is at least partially fixedly connected with the heating element 2 . In this way, the heating element 2 can be fixed on the outer surface of the porous matrix 1 through the fixing element 3, because at least part of the fixing element 3 is embedded and fixed inside the porous matrix 1, and the fixing element 3 and the porous ceramic green body are sintered at high temperature. The inlaid combination can make the heating element 2 tightly and firmly bonded to the outer surface of the porous substrate 1, enhance the stability of the overall structure of the atomizing core, and prevent the heating element 2 from falling off.

Compared with the prior art, the atomizing core provided by the embodiment of the present invention forms an atomizing surface 11 on at least part of the outer surface of the porous base 1, and arranges a heating element 2 on the outer surface of the porous base 1, and then the heating element 2 It is combined with the outer surface of the porous matrix 1 through the fixing part 3 . Since at least part of the fixing part 3 is embedded and fixed inside the porous matrix 1, and the fixing part 3 is embedded and combined with the porous ceramic green body through a high-temperature sintering process, the heating element 2 can be closely and firmly combined with the outer surface of the porous matrix 1 , to enhance the stability of the overall structure of the atomizing core, so that the heating element 2 will not fall off. In this way, the heating element 2 is bonded to the outer surface of the porous matrix 1 by the fixing element 3, which is not limited by the smaller inner hole size of the columnar hollow ceramics, and there is no need to use a very fine heating wire as the heating element 2, and the heating element 2 The layout area can be uniformly set according to the size of the outer surface of the porous substrate 1, so that the atomizing core can have the excellent performance of fast heating rate, uniform temperature distribution and large heating area during operation.

It can be understood that the microporous structure mentioned in the embodiment of the present invention refers to the internal connected pore structure with a certain porosity and pore size formed inside the porous matrix 1, and the internal connected pore structure can absorb and store aerosol to form a matrix , and transport the adsorbed and stored aerosol-forming substrate to the atomizing surface 11 . In some of these embodiments, the microporous structure may be, but not limited to, a pore structure with a pore diameter of 20 μm to 100 μm and a porosity of 30% to 60%, so as to ensure that the porous matrix 1 is excellent in both liquid-holding ability and liquid-conducting ability, Able to achieve rapid fluid drainage and fluid lock.

In some embodiments, the porous substrate includes a porous ceramic substrate, a porous glass substrate, a porous silicon substrate, etc. without limitation.

Please refer to FIG. 1 and FIG. 5 in conjunction. In some embodiments, the outer contour of the porous matrix 1 is arranged in a columnar shape. The porous matrix 1 has a first end 12 and a second end 13 along its axial direction. The end surface of the first end 12 An atomizing surface 11 is formed, and the heating element 2 is arranged on the atomizing surface 11 . By adopting the above scheme, the atomizing surface 11 is set on the end surface of the first end 12 of the columnar porous substrate 1, the area of the atomizing surface 11 can be smaller than the area of the end surface of the first end 12, and the area of the atomizing surface 11 can also be larger than the area of the first end 12. The area of the end face of one end 12. And, the heating element 2 is arranged on the atomizing surface 11, when the aerosol-forming substrate stored in the porous matrix 1 is transmitted to the atomizing surface 11 through the microporous structure, the aerosol-forming substrate on the atomizing surface 11 can be made to form rapidly. Heating up, heating evenly and increasing the amount of aerosols generated to enhance the user's taste.

Understandably, please refer to FIG. 6 . In some embodiments, the atomizing surface 11 is recessed with a groove 16 for accommodating and positioning the heating element 2 . The shape and size of the groove 16 are consistent with the shape of the heating element 2 Adapted to the size, the heating element 2 is at least partially embedded in the groove 16 . By adopting the above scheme, a groove 16 is recessed on the atomizing surface 11, and the heating element 2 is at least partially embedded in the groove 16. On the one hand, it can play the role of positioning the heating element 2, and on the other hand, it can further strengthen The stability of the heating element 2 combined with the porous matrix 1.

Please refer to FIG. 2 and FIG. 4 in conjunction. In some embodiments, the heating element 2 includes an annular heating sheet 21 located in the center, and a first heating structure with a number of first arc-shaped heating sheets 221 arranged in concentric arcs. 22, and the second heating structure 23 arranged in concentric arcs by a number of second arc-shaped heating sheets 231, and the first heating structure 22 and the second heating structure 23 are centered with the ring center of the ring-shaped heating sheet 21 as the symmetrical center Symmetrically, the first heating structure 22 and the second heating structure 23 are electrically connected to the ring-shaped heating sheet 21 respectively. By adopting the above structure, the heating element 2 includes an annular heating sheet 21, a first heating structure 22 and a second heating structure 23, and the first heating structure 22 and the second heating structure 23 take the ring center of the annular heating sheet 21 as the center of symmetry Symmetrical to the center, the first heating structure 22 is composed of a number of second arc-shaped heating sheets 231 arranged in a concentric arc shape, and the second heating structure 23 is composed of a number of second arc-shaped heating sheets 231 arranged in a concentric arc shape. In this way, the heating element 2 can be evenly arranged on the atomizing surface 11 , and the atomizing core can have the excellent performance of fast heating rate, uniform temperature distribution and large heating area when working.

Please refer to FIG. 2 and FIG. 4 in conjunction. In some embodiments, the first heat generating structure 22 includes a plurality of first arc-shaped heat generating sheets 221, and a first connection for electrically connecting two adjacent first arc-shaped heat generating sheets 221. sheet 222, and the second connecting sheet 223 electrically connecting the first arc-shaped heating sheet 221 located at the innermost side of the first heating structure 22 with the annular heating sheet 21; the second heating structure 23 includes a plurality of second arc-shaped heating sheets 231 , the third connecting piece 232 that electrically connects two adjacent second arc-shaped heating pieces 231, and the second connecting piece 232 that electrically connects the second arc-shaped heating piece 231 located at the innermost side of the second heating structure 23 with the ring-shaped heating piece 21 The fourth connecting piece 233 . By adopting the above-mentioned structural arrangement, two adjacent first arc-shaped heating sheets 221 are arranged at intervals, and two adjacent second arc-shaped heating sheets 231 are arranged at intervals, so that the atomizing core can have a fast heating rate, uniform temperature distribution and Excellent performance with large heating area.

Please refer to FIG. 2 and FIG. 4 in conjunction. In some embodiments, the first heat generating structure 22 includes a number of first arc-shaped heat generating sheets 221 arranged in concentric arcs, and the An arc-shaped heating sheet 221 is electrically connected to the first lead wire 224; the second heating structure 23 includes a number of second arc-shaped heating sheets 231 arranged in concentric arcs, and the second arc-shaped heating sheet 231 located on the outermost side of the second heating structure 23 The arc-shaped heating sheet 231 is electrically connected to the second lead wire 234 . By adopting the above structure, the heating element 2 is electrically connected to the positive pole and the negative pole of the power supply device (not shown in the figure) respectively through the first lead wire 224 and the second lead wire 234, so as to facilitate the electrical connection between the atomizing core and the power supply device, and The power supply device drives the heating element 2 of the atomizing core to heat the atomized aerosol to form the substrate.

Please refer to FIG. 2 and FIG. 4 together. In some embodiments, the heating element 2 further includes a first electrode sheet 225 electrically connected to the first arc-shaped heating sheet 221 located on the outermost side of the first heating structure 22, and The second arc-shaped heating sheet 231 located at the outermost side of the second heating structure 23 is electrically connected to the second electrode sheet 235, one end of the first lead wire 224 is electrically welded to the first electrode sheet 225, and one end of the second lead wire 234 is electrically connected to the first electrode sheet 225. The two electrode sheets 235 are electrically welded. By adopting the above-mentioned structural arrangement, the first electrode sheet 225 and the second electrode sheet 235 are respectively arranged on the heating element 2, which facilitates the welding of the first lead wire 224 and the second lead wire 234, and strengthens the first lead wire 224 and the second lead wire 234 respectively. The stability of welding with the heating element 2 effectively prevents the first lead wire 224 and the second lead wire 234 from falling off. It can be understood that the heating element 3 can also be arranged in the shape of concentric rings or mosquito coils, so that the heating elements 2 are evenly arranged on the atomizing surface 11, so that the atomizing core can have a fast heating rate and uniform temperature distribution during operation. And the excellent performance of large heating area.

Please refer to FIG. 3 , FIG. 4 and FIG. 5 in conjunction. In some embodiments, the fixing member 3 includes a fixing section 31 for being embedded and fixed inside the porous matrix 1 and a connecting section connecting the heating element 2 and the fixing section 31 32. The extending direction of the fixing section 31 and the extending direction of the connecting section 32 are at an angle to each other to form a grapple-like structure. By adopting the above-mentioned structural arrangement, it is only necessary to embed and fix the fixed section 31 of a fixed structure inside the porous matrix 1, and connect the heating element 2 with the fixed section 31 through the connecting section 32, and then the heating element 2 can be connected through the fixing piece 3. Tightly and firmly combined with the atomizing surface 11 of the porous substrate 1 .

Please refer to FIG. 4 and FIG. 5 together. In some embodiments, the grapple-shaped structure is an inverted T-shaped structure or an L-shaped structure. By adopting the above-mentioned structural arrangement, the fixed section 31 and the connecting section 32 jointly form a grapple-shaped structure, and the grapple-shaped structure is set into an inverted T-shaped structure or an L-shaped structure, so that the grapple-shaped structure embedded in the porous matrix 1 It is not easy to loosen and fall off, which further enhances the stability of the heating element 2 embedded on the atomizing surface 11 of the porous substrate 1, and is beneficial to further prevent the heating element 2 from loosening and falling off. It can be understood that, in some of the embodiments, there are multiple fixing parts 3, and the fixing parts 3 are distributed on the heating element 2 in the form of an array, and the fixing parts 3 and the heating element 2 are integrally formed, so that the heating element 2 Each part bears a balanced force, which further enhances the stability of the heating element 2 embedded on the atomizing surface 11 of the porous substrate 1 .

Please refer to Fig. 2, Fig. 3 and Fig. 5 in combination. In some embodiments, the outer contour of the porous matrix 1 is set in a columnar shape, and the porous matrix 1 is provided with air holes 15 along its axial direction. The second part of the porous matrix 1 A liquid storage tank 14 is recessed on the end surface of the end 13 , and the aerosol-forming substrate in the liquid storage tank 14 can be transported to the atomizing surface 11 through the microporous structure. By adopting the above scheme, the vent hole 15 is set through the porous substrate 1, the end surface of the first end 12 of the porous substrate 1 forms the atomizing surface 11, and the end surface of the second end 13 of the porous substrate 1 is concavely provided with a liquid storage Slot 14. Then, when in use, it is only necessary to accommodate at least part of the atomizing core in the atomizing chamber, and connect the notch of the liquid storage tank 14 with the liquid storage chamber, and the liquid storage tank 14 can store part of the aerosol-forming substrate and simultaneously atomize The surface 11 and the atomizing parts on the atomizing surface 11 are located outside the liquid storage chamber, and the ventilation hole 15 is connected with the air outlet hole of the atomizer through the ventilation tube (the lumen of the ventilation tube forms a smoke guide channel), so that the atomization surface The aerosol formed by heating and atomizing on the 11 is collected into the vent hole 15, and then flows out from the vent hole for the user to inhale. Since the liquid storage tank 14 and the atomizing surface 11 are respectively arranged at opposite ends of the porous substrate, the distance from the aerosol-forming substrate to the atomizing surface 11 is shortened, and the resistance suffered by the aerosol-forming substrate during transmission is reduced. The aerosol-forming substrate in the liquid storage tank 14 can be continuously and quickly transmitted to the atomization surface 11 through the microporous structure, thereby increasing the liquid conduction rate of the porous substrate, thereby improving the liquid conduction efficiency of the porous substrate, and ensuring that the atomization surface 11 Sufficient liquid supply can effectively prevent the atomizing core from burning dry. Understandably, the number of liquid storage tanks 14 can be set to one, two or more than three. When the number of liquid storage tanks 14 is set to multiple (more than three), multiple liquid storage tanks 14 are arranged at equal intervals along the circumference of the vent hole 15, so that the liquid supply of the atomizing surface 11 is more sufficient, which is beneficial to further prevent The atomizing core appears dry burning.

The embodiment of the present invention also provides an atomizer suitable for an aerosol generating device. The atomizer provided by the embodiment of the present invention includes an atomization core and an atomization housing with an atomization chamber and a liquid storage chamber inside. Part of it is accommodated in the atomizing chamber, and the atomizing surface 11 is located outside the liquid storage chamber. An air outlet (not shown in the figure) is provided on the atomization housing, and a ventilation pipe (not shown in the figure) communicating with the air outlet 15 and the air outlet is also provided in the atomization housing, and the lumen of the ventilation pipe forms a smoke guiding channel ( Figure not shown). Since the atomizer has all the technical features of the atomizing core provided by any of the above embodiments, it has the same technical effect as the atomizing core. Then, when in use, it is only necessary to accommodate at least part of the atomizing core in the atomizing cavity, and make the liquid storage tank 14 of the porous substrate 1 of the atomizing core communicate with the liquid storing cavity of the atomizer, and part of the aerosol-forming matrix is then It can be stored in the liquid storage tank 14, and the aerosol-forming substrate in the liquid storage chamber and/or the liquid storage tank 14 can be continuously transported to the atomizing surface 11 through the microporous structure to ensure that the atomizing surface 11 is supplied with sufficient liquid. The heat generated by the heating element 2 of the atomizing core can heat the aerosol-forming substrate transmitted to the atomizing surface 11 and atomize to form an aerosol. When the user inhales, the aerosol gathers into the air vent 15 from the surroundings, then flows into the air outlet through the smoke guiding channel (ventilation pipe) in turn, and finally flows out from the air outlet of the nebulizer for the user to inhale.

The embodiment of the utility model also provides an aerosol generating device, which includes the atomizing core provided in any of the above embodiments or the atomizer provided in any of the above embodiments. Since the aerosol generating device has all the technical features of the atomizing core or atomizer provided by any of the above embodiments, it has the same technical effect as the atomizing core.

The embodiment of the present invention also provides the above-mentioned processing method of the atomizing core in the embodiment of the present invention.

In some of the embodiments, the method for processing the atomization core provided by the embodiments of the present invention includes the following steps:

Step S01: Weighing the raw materials for preparing the porous matrix 1, the raw materials for the porous matrix 1 include the following components in parts by mass: ceramic powder 70%-80%, paraffin wax 20%-25%, and stearic acid 0%-5%, Mixing the porous matrix 1 with raw materials to form a ceramic slurry;

Step S02: Fix the heating element 2 with the fixing element 3 in the forming mold according to the predetermined position, inject the ceramic slurry into the forming mold through a grouting machine, and after the ceramic slurry is formed into a ceramic green body, the heating element 2 can pass through The fixing part 3 is inlaid on the outer surface of the porous substrate 1 to obtain a porous ceramic atomizing core body formed by inlaying the heating element 2 and the ceramic green body;

Step S03: Perform wax discharge treatment on the porous ceramic atomizing core body, and then sinter and solidify the porous ceramic atomizing core body after the wax discharge treatment, so that the heating element 2 is firmly bonded to the outer surface of the porous substrate 1, and The finished product of the porous ceramic atomizing core is prepared.

Step S04: The processing method of the atomizing core also includes the step of welding the electrode leads. The welding step of the electrode leads includes: cleaning, drying and testing the finished porous ceramic atomizing core, and then putting the porous ceramic atomizing core on the first The first lead wire 224 is welded at the electrode welding point, and the second lead wire 234 is welded at the second electrode welding point of the finished porous ceramic atomizing core.

In the above step S01, the ceramic powder includes at least one of magnesium oxide, calcium oxide, aluminum hydroxide, aluminum oxide, quartz powder, diatomaceous earth, silicon carbide, glass powder or clay. The premix treatment can follow the conventional mixing method of mixing ceramic raw materials in the ceramic field, and in the process of preparing ceramic slurry, if necessary, add corresponding sintering aids, pore-forming agents, binders and plasticizers to The adjustment and improvement of the strength, porosity and pore size of the porous matrix 1.

In the above step S02, the heating element 2 is made of at least one material selected from nickel-chromium alloy, iron-chromium-aluminum alloy, nickel-iron alloy, nickel or titanium. The heating element 2 is a heating element arranged in the shape of a membrane, and the thickness of the heating element is 0.1-0.16 mm, so that the heating element 2 can be embedded on the surface of the porous matrix 1 to form a heating element 2 with a reasonable resistance value.

In the above step S02, the ceramic grouting slurry is grouted into a ceramic green body, which may be a conventional mixing treatment method of using a grouting machine to grout the ceramic grouting slurry into a ceramic green body of a designed size through a mold. In some specific embodiments, the grouting molding conditions of the ceramic green body are as follows: the temperature of the ceramic grouting slurry is controlled at 75-90°C, and the grouting pressure is controlled at 0.6-1.5Mpa, which can achieve better ceramic grouting. Slurry slurry is cast into a ceramic green body, which is beneficial to reduce the defects of porous ceramics.

In the above step S03, the porous ceramic atomizing core body is subjected to wax removal treatment, which may be a conventional wax removal treatment method for performing wax removal on the porous ceramic atomization core body. In some of the specific embodiments, the wax discharge process can make the paraffin wax be volatilized and discharged step by step, instead of explosive volatilization and discharge, which is beneficial to reduce the defects of the porous ceramics, thereby improving the yield rate of the porous ceramics. In some of the specific embodiments, the wax removal method of the porous ceramic atomizing core body is as follows: after the graphite is spread on the bottom of the tray, the ceramic green body is placed on the surface of the graphite, and then a layer of graphite is covered on the ceramic green body. , to bury the ceramic green body in graphite, and keep it warm for 2-4 hours at a temperature of 200-300°C. By controlling the conditions of the wax removal method of the porous ceramics provided by the embodiment of the present invention, combined with the regulation of the sintering process, the strength of the ceramic green body after wax removal in the embodiment of the present invention can be further improved.

In the above step S03, the sintering temperature of the porous ceramic atomizing core body after wax removal is controlled at 600-700°C. By adjusting the sintering temperature of the porous ceramic provided by the embodiment of the present invention, the porous ceramic provided by the embodiment of the present invention is further improved. The adjustment and improvement of the strength, porosity and pore size of ceramics make the porous ceramics not easy to crack and deform, and make the porous ceramics have good porosity and suitable pore size. Moreover, the sintering temperature is controlled at 600-700° C., so that the sintering temperature is lower than the melting point of the heating element 2 and the fixing element 3 , so as to avoid damage to the heating element 2 and the fixing element 3 .

Example 1

(1) Weigh the following raw material components by mass: the mass percentage of ceramic powder is 70%, the mass percentage of paraffin wax is 25% and the mass percentage of stearic acid is 5%, and the porous matrix 1 is mixed with raw materials , to obtain ceramic premix powder. Put the binder and plasticizer into the stirring and defoaming machine to melt for 1 hour, then add the premixed ceramic premix powder, stir and defoam for 4 hours, and knead to form a ceramic slurry;

(2) Pour the stirred ceramic slurry into the injection molding machine, and keep the temperature of the ceramic slurry at 75°C. Before starting the grouting molding, the heating element 2 with the fixing part 3 is fixed in the molding mold according to the predetermined position, and then the ceramic slurry is injected into the molding mold through the grouting machine, and after the ceramic slurry is formed into a ceramic green body, The heating element 2 can be inlaid on the outer surface of the porous substrate 1 through the fixing element 3, so as to obtain a porous ceramic atomizing core body formed by inlaying the heating element 2 and the ceramic green body;

(3) The body of the porous ceramic atomizing core is subjected to wax removal treatment. Specifically, the ceramic green body is placed in the middle of the graphite powder, and the wax is removed at 200° C. for 120 minutes. Then, sinter and solidify the porous ceramic atomizing core body after wax removal treatment, so that the heating element 2 is firmly bonded to the outer surface of the porous base 1 to prepare a finished porous ceramic atomizing core. Specifically, the sintering temperature is controlled at 600° C., so that the sintering temperature is lower than the melting point of the heating element 2 and the fixing element 3 , so as to avoid damage to the heating element 2 and the fixing element 3 .

(4) After cleaning, drying and testing the finished porous ceramic atomizing core, weld the first lead wire 224 on the first electrode welding point of the finished porous ceramic atomizing core, and weld the first lead wire 224 on the first electrode welding point of the finished porous ceramic atomizing core. The second lead 234 is welded at the welding spot of the two electrodes.

The atomization core in Example 1 was tested for atomization temperature by an infrared thermal imager. The test atomization temperature data is shown in Table 1. The test atomization temperature distribution is shown in Figure 7. The test atomization temperature temperature rise rate changes See Figures 8 and 9.

Example 2

(1) Weigh the following raw material components by mass: the mass percentage of ceramic powder is 76%, the mass percentage of paraffin wax is 22% and the mass percentage of stearic acid is 2%, and the porous matrix 1 is mixed with raw materials , to obtain ceramic premix powder. Put the binder and plasticizer into the stirring and defoaming machine to melt for 1.5 hours, then add the premixed ceramic premix powder, stir and defoam for 5 hours, and knead to form a ceramic slurry;

(2) Pour the stirred ceramic slurry into the injection molding machine, and keep the temperature of the ceramic slurry at 81°C. Before starting the grouting molding, the heating element 2 with the fixing part 3 is fixed in the molding mold according to the predetermined position, and then the ceramic slurry is injected into the molding mold through the grouting machine, and after the ceramic slurry is formed into a ceramic green body, The heating element 2 can be inlaid on the outer surface of the porous substrate 1 through the fixing element 3, so as to obtain a porous ceramic atomizing core body formed by inlaying the heating element 2 and the ceramic green body;

(3) The body of the porous ceramic atomizing core is subjected to wax removal treatment. Specifically, the ceramic green body is placed in the middle of graphite powder, and the wax is removed at 250° C. for 180 minutes. Then, sinter and solidify the porous ceramic atomizing core body after wax removal treatment, so that the heating element 2 is firmly bonded to the outer surface of the porous base 1 to prepare a finished porous ceramic atomizing core. Specifically, the sintering temperature is controlled at 650° C., so that the sintering temperature is lower than the melting point of the heating element 2 and the fixing element 3 , so as to avoid damage to the heating element 2 and the fixing element 3 .

Using the same test method as in Example 1, the atomization core in Example 2 was tested for atomization temperature through an infrared thermal imager. The test atomization temperature data is shown in Table 1, and the test atomization temperature distribution is shown in Fig. 10. Refer to Figure 11 and Figure 12 for the change of the test atomization temperature heating rate.

Example 3

(1) Weigh the following raw material components by mass: 80% by mass of ceramic powder and 20% by mass of paraffin, and mix the porous matrix 1 with the raw materials to obtain ceramic premix powder. Put the binder and plasticizer into the stirring and defoaming machine to melt for 2 hours, then add the premixed ceramic premix powder, stir and defoam for 5 hours, and knead to form a ceramic slurry;

(2) Pour the stirred ceramic slurry into the injection molding machine, and keep the temperature of the ceramic slurry at 90°C. Before starting the grouting molding, the heating element 2 with the fixing part 3 is fixed in the molding mold according to the predetermined position, and then the ceramic slurry is injected into the molding mold through the grouting machine, and after the ceramic slurry is formed into a ceramic green body, The heating element 2 can be inlaid on the outer surface of the porous substrate 1 through the fixing element 3, so as to obtain a porous ceramic atomizing core body formed by inlaying the heating element 2 and the ceramic green body;

(3) The body of the porous ceramic atomizing core is subjected to wax removal treatment. Specifically, the ceramic green body is placed in the middle of graphite powder, and the wax is removed at 300° C. for 240 minutes. Then, sinter and solidify the porous ceramic atomizing core body after wax removal treatment, so that the heating element 2 is firmly bonded to the outer surface of the porous base 1 to prepare a finished porous ceramic atomizing core. Specifically, the sintering temperature is controlled at 700° C. so that the sintering temperature is lower than the melting point of the heating element 2 and the fixing element 3 to avoid damage to the heating element 2 and the fixing element 3 .

Using the same test method as in Example 1, the atomization core in Example 3 was tested for atomization temperature through an infrared thermal imager. The test atomization temperature data is shown in Table 1, and the test atomization temperature distribution is shown in Fig. 13. Refer to Figure 14 and Figure 15 for the change of the test atomization temperature heating rate.

comparative example

(1) Take the raw material components of following mass parts: the mass percentage of ceramic powder is 65%, the mass percentage of starch is 15%, the mass percentage of paraffin wax is 18.5% and the mass percentage of fatty acid is 1.5%, the porous The matrix 1 is mixed with raw materials to obtain ceramic premix powder. Put the binder and plasticizer into the stirring and defoaming machine to melt for 2 hours, then add the premixed ceramic premix powder, stir and defoam for 4 hours, and knead to form a ceramic slurry;

(2) Pour the stirred ceramic slurry into the injection molding machine, keep the temperature of the ceramic slurry at 90°C, inject the ceramic slurry into the molding mold through the grouting machine, and wait until the ceramic slurry is formed into a cylindrical hollow ceramic green body , inlaying the heating wire on the inner hole wall of the cylindrical hollow ceramic green body to obtain a porous ceramic atomizing core body formed by inlaying the heating wire and the ceramic green body;

(3) The body of the porous ceramic atomizing core is subjected to wax removal treatment. Specifically, the ceramic green body is placed in the middle of graphite powder, and the wax is removed at 300° C. for 240 minutes. Then, sinter and solidify the porous ceramic atomizing core body after wax removal treatment, so that the heating element 2 is firmly bonded to the inner hole wall of the cylindrical hollow ceramic green body to prepare a finished porous ceramic atomizing core.

(4) After the finished product of the porous ceramic atomizing core is cleaned, dried and inspected, the electrode leads are welded.

Using the same test method as in Example 1, the atomization temperature of the atomization core in the comparative example is tested by an infrared thermal imager. The atomization temperature data of the test are shown in Table 1, and the atomization temperature distribution of the test is shown in Figure 16. , See Figure 17 and Figure 18 for the test atomization temperature heating rate change.

Correlative performance test of atomizing core:

The atomizing cores in the above-mentioned examples 1 to 3 and the comparative example were respectively tested for atomization temperature by an infrared thermal imaging camera. Specifically, during the test, DC power supply is adopted, the atomizing core maintains a constant heating power of 7W, and the heating mode is adopted to cycle 10 times for 3 seconds and 30 seconds, and the real-time data collection is carried out with a collection frequency of 0.02 seconds. The test results are shown in Table 1 below.

Table 1 Test table of atomization temperature of atomization core in embodiment 1 to embodiment 3 and comparative example

It can be seen from the above Table 1 that the heating rate of the atomizing core in Examples 1 to 3 is faster than that in the comparative example. It can be seen from FIG. 7 , FIG. 10 , FIG. 13 and FIG. 16 that the atomizing cores in Embodiment 1 to Embodiment 3 have excellent performances of uniform temperature distribution and large heating area.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims

An atomizing core for an atomizer, characterized in that the atomizing core includes:

A porous substrate, at least part of the outer surface forms an atomization surface for heating and atomizing the aerosol-forming substrate, and the porous substrate has a microporous structure that absorbs and stores the aerosol-forming substrate inside, and the microporous structure can dissipate the aerosol Forming the substrate is transported to the atomizing surface;

a heating element, disposed on the outer surface of the porous substrate, for heating and atomizing the aerosol-forming substrate transported to the atomizing surface; and

A fixing piece, used to fix the heating element on the outer surface of the porous matrix, the fixing piece is at least partially embedded and fixed inside the porous matrix, and the fixing piece is at least partially fixedly connected with the heating element .
The atomizing core according to claim 1, wherein the outer contour of the porous matrix is columnar, the porous matrix has a first end and a second end along its axial direction, and the end surface of the first end forms a On the atomizing surface, the heating element is arranged on the atomizing surface.
The atomizing core according to claim 1, wherein the heating element comprises a ring-shaped heating sheet arranged in the center, a first heating structure in which several first arc-shaped heating sheets are arranged in concentric arcs, and The second heat generating structure is arranged in concentric circular arcs by several second arc-shaped heat generating sheets, and the first heat generating structure and the second heat generating structure are centrally symmetrical with the ring center of the annular heat generating sheet as the center of symmetry, The first heating structure and the second heating structure are respectively electrically connected to the annular heating sheet.
The atomizing core according to claim 3, wherein the first heat generating structure comprises a plurality of the first arc-shaped heat-generating sheets, a first arc-shaped heat-generating sheet electrically connecting two adjacent first arc-shaped heat-emitting sheets. A connecting piece, and a second connecting piece that electrically connects the first arc-shaped heating piece located at the innermost side of the first heating structure with the annular heating piece; the second heating structure includes a plurality of the second arcs shaped heating sheet, a third connecting sheet electrically connecting two adjacent second arc-shaped heating sheets, and connecting the second arc-shaped heating sheet located at the innermost side of the second heating structure with the ring-shaped heating sheet The fourth connecting piece electrically connected.
The atomizing core according to claim 3, characterized in that, the first heating structure comprises a plurality of the first arc-shaped heating sheets arranged in concentric arcs, and is located on the outermost side of the first heating structure. The first lead wire electrically connected to the first arc-shaped heating sheet; the second heating structure includes a number of the second arc-shaped heating sheets arranged in concentric arcs, and is located on the outermost side of the second heating structure The second lead wire electrically connected to the second arc-shaped heating sheet.
The atomizing core according to claim 1, wherein the fixing member comprises a fixing section for being embedded and fixed inside the porous matrix and a connecting section connecting the heating element and the fixing section, The extending direction of the fixing section and the extending direction of the connecting section are at an angle to form a hook-like structure embedded in the porous matrix.
The atomizing core according to any one of claims 1 to 6, characterized in that, the number of the fixing elements is multiple, and the plurality of fixing elements are arranged in an annular array.
The atomizing core according to any one of claims 1 to 6, characterized in that, the outer contour of the porous base is arranged in a columnar shape, the porous base is provided with vent holes along its axial direction, and the porous base A liquid storage tank is recessed on the end surface of the second end, and the aerosol-forming substrate in the liquid storage tank can be transported to the atomizing surface through the microporous structure.
An atomizer, comprising an atomization core and an atomization housing with an atomization chamber and a liquid storage chamber inside, characterized in that the atomization core is the mist according to any one of claims 1 to 8 An atomizing core, the atomizing core is at least partially accommodated in the atomizing chamber, and the atomizing surface is located outside the liquid storage chamber.
An aerosol generating device, characterized by comprising the atomizing core according to any one of claims 1 to 8 or the atomizer according to claim 9.
A method for processing an atomization core according to any one of claims 1 to 8, characterized in that the method for processing the atomization core comprises the following steps:

Weighing the raw materials for preparing the porous matrix, the raw materials for the porous matrix include the following components in parts by mass: ceramic powder 70% to 80%, paraffin wax 20% to 25%, and stearic acid 0% to 5%. The porous matrix is mixed with raw materials to form a ceramic slurry;

Fix the heating element provided with the fixing piece in the forming mold according to the predetermined position, inject the ceramic slurry into the forming mold through a grouting machine, and after the ceramic slurry is formed into a ceramic green body, the heating The element can be inlaid on the outer surface of the porous substrate through the fixing element, so as to obtain a porous ceramic atomizing core body formed by inlaying the heating element and the ceramic green body;

The porous ceramic atomizing core base body is subjected to wax discharge treatment, and then the porous ceramic atomization core base body is sintered and solidified after the wax discharge treatment, so that the heating element is firmly bonded to the outer surface of the porous base body surface to prepare the finished porous ceramic atomizing core.
The processing method of the atomizing core according to claim 11, characterized in that, the processing method of the atomizing core further comprises the step of welding electrode leads, and the step of welding electrode leads comprises: connecting the porous ceramic atomizing core After the finished product is cleaned, dried and inspected, the first lead wire is welded at the first electrode welding point of the finished porous ceramic atomizing core, and the second lead is welded at the second electrode welding point of the finished porous ceramic atomizing core. Two leads.