WO2024037078A1

WO2024037078A1 - Electronic atomization device, and atomizer and atomization core thereof

Info

Publication number: WO2024037078A1
Application number: PCT/CN2023/094784
Authority: WO
Inventors: 韩达; 邹凌芳; 张蛟; 周宏明
Original assignee: 海南摩尔兄弟科技有限公司
Priority date: 2022-08-17
Filing date: 2023-05-17
Publication date: 2024-02-22
Also published as: CN115413827A

Abstract

An electronic atomization device, and an atomizer and an atomization core thereof. The atomization core comprises a heating part (1), and at least one liquid guide part (2) connected to the heating part (1). A plurality of liquid guide grooves (20), which are arranged in parallel and spaced apart from each other and have capillary force, are formed on a surface of the liquid guide part (2). The atomizer comprises an atomization shell and the atomization core, wherein a liquid storage cavity (5) is provided in the atomization shell, and the atomization core communicates with the liquid storage cavity (5). The electronic atomization device comprises a power supply assembly and the atomizer, wherein the power supply assembly is connected to the atomizer and supplies power to the atomizer. The plurality of liquid guide grooves (20), which are arranged in parallel and spaced apart from each other and have the capillary force, are formed on the surface of the liquid guide part (2), so that the heat capacity of the atomization core is reduced, and the atomization efficiency of the atomization core is improved. The liquid guide part (2) can achieve all the functions of liquid guiding, liquid storage and atomization. By means of the vertical structural design of the atomization core, atomization liquid in the liquid storage cavity (5) can be separated from atomization liquid being heated, so that the fragrance restoration degree of the atomization liquid is increased to the maximum extent, and the energy consumption is reduced.

Description

Electronic atomization device and its atomizer and atomization core

Technical field

The present invention relates to the field of atomization technology, and in particular to an electronic atomization device, its atomizer and atomization core.

Background technique

Most of the atomizing cores of current electronic atomization devices are ceramic atomizing cores, which are composed of porous ceramics and thick film heating circuits. The atomized liquid is transmitted from the liquid storage chamber to the heating film under the action of the capillary force of the micro-through holes in the porous ceramics. , complete atomization. Usually, the amount of liquid stored in the porous ceramic is much larger than the amount of liquid required for one atomization. Therefore, when the heating film is working, a large amount of heat is transferred to the atomized liquid that has not yet been atomized, causing a large energy loss; in addition, the atomized liquid in current technology is usually composed of multiple chemical components. Components with different boiling points evaporate successively, reducing the degree of aroma reduction. Moreover, in one atomization process, the amount of atomized liquid that transfers heat to the heating film is very limited, so it is difficult to achieve a large atomization amount.

Contents of the invention

The technical problem to be solved by the present invention is to provide an electronic atomization device, its atomizer and atomization core that can reduce energy consumption, improve atomization efficiency and aroma reduction degree in view of the shortcomings of the existing technology.

The technical solution adopted by the present invention to solve the technical problem is to construct an atomizing core for use in an electronic atomization device, including a heating part, and the atomizing core also includes at least one liquid conducting part connected to the heating part, The surface of the liquid-conducting portion is formed with a plurality of liquid-conducting grooves arranged in parallel and spaced apart and having capillary force.

Preferably, at least one of the heating parts and the liquid conducting part have an integrated structure.

Preferably, the atomization core further includes a support part, and the support part is provided on a surface of the heating part away from the liquid-conducting part.

Preferably, the atomization core further includes a support part disposed between the heating part and the liquid conduction part.

Preferably, the liquid guide part includes a first liquid guide part and a second liquid guide part arranged on opposite sides in the width direction of the heating part, and the liquid guide grooves are respectively arranged in parallel and spaced apart on the first liquid guide part. and on the second liquid conducting part.

Preferably, a first electrode and a second electrode are respectively provided on opposite sides of the heating part in the length direction, and the first electrode and the second electrode are electrically conductive for the heating part to generate heat.

Preferably, the heating part includes an electromagnetic heating unit, and the heating part generates heat through electromagnetic induction of the electromagnetic heating unit.

Preferably, the liquid guide groove of the first liquid guide part and the liquid guide groove of the second liquid guide part are arranged symmetrically.

Preferably, the liquid guide grooves of the first liquid guide part and the liquid guide grooves of the second liquid guide part are arranged in staggered rows.

Preferably, the atomization core further includes a connection part for fixing or sealing, and the connection part extends axially along the liquid guide part.

Preferably, the connecting part is provided with a heat-insulating groove, the heat-insulating groove crosses a plurality of the liquid guide grooves, and its two ends are located in the connecting part.

Preferably, the width of the thermal insulation groove is less than or equal to 1 mm.

Preferably, the heating part has a dense structure.

Preferably, the heating part has a porous structure.

Preferably, the material of the heating part is any one of metal, cermet, metallic glass, conductive ceramic and their composite oxides.

Preferably, the cermet is made of a composite of at least one of metal or metal alloy and ceramic material.

Preferably, the ceramic material includes at least one of alumina, zirconium oxide, silicon oxide, yttrium oxide, lanthanum oxide, cerium oxide and magnesium oxide.

Preferably, the atomizing core is an upright atomizing core, and the plurality of liquid guide grooves extend from bottom to top.

The present invention also constructs an atomizer, which includes an atomization shell and the above-mentioned atomization core. The atomization shell is provided with a liquid storage chamber for storing atomization liquid. The atomization core and the storage chamber are arranged in the atomization shell. The liquid chambers are connected.

Preferably, an oil guide member is provided at the liquid outlet of the liquid storage chamber, and the liquid storage chamber supplies liquid to the atomization core in a vertical direction through the oil guide member.

Preferably, the oil-conducting member is porous ceramic, liquid-conducting cotton or silicone sleeve.

The present invention also constructs an electronic atomization device, which includes a power supply component and the above-mentioned atomizer. The power supply component is connected to the atomizer and supplies power to the atomizer.

The implementation of the present invention has the following beneficial effects: the present invention significantly reduces the heat capacity of the atomizing core by forming a plurality of liquid guiding grooves with capillary force arranged at parallel intervals on the surface of the liquid guiding part, and greatly improves the efficiency of the atomizing core. The atomization efficiency is high; the liquid guide part can realize the functions of liquid guide, liquid storage and atomization at the same time; the atomizer core adopts a vertical structure design to realize the separation function of the atomized liquid in the liquid storage chamber and the atomized liquid being heated. , which can maximize the aroma reduction degree of the atomized liquid, thereby reducing energy consumption.

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 structural diagram of the atomizing core Embodiment 1 of the present invention;

Figure 2 is a front view of the atomizing core Embodiment 1 of the present invention including two liquid guide parts;

Figure 3 is a front view of the atomizing core Embodiment 1 of the present invention including a liquid guide portion;

Figure 4 is a front view of Embodiment 2 of the atomizing core of the present invention;

Figure 5 is a front view of Embodiment 3 of the atomizing core of the present invention;

Figure 6 is a schematic structural diagram of the atomization core with a heat insulation groove of the present invention;

Figure 7 is a schematic diagram of the cooperation between the atomizing core and the oil guide part of the present invention;

Figure 8 is a schematic diagram of the cooperation between the atomization core with a heat insulation groove and the oil guide part of the present invention;

Figure 9 is a schematic structural diagram of an embodiment of the atomizer of the present invention;

Figure 10 is a schematic structural diagram of another embodiment of the atomizer of the present invention.

Implementation

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. In the following description, what needs to be understood is "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", "head", "tail", etc. are based on the orientation or positional relationship shown in the drawings and are constructed and operated in specific orientations. It is only for the convenience of describing the present technical solution, and does not indicate that the device or element referred to must have a specific orientation, and therefore cannot be understood as a limitation of the present invention.

It should also be noted that, unless otherwise expressly stipulated and limited, terms such as "installation", "connection", "connection", "fixing" and "setting" should be understood in a broad sense. For example, it can be a fixed connection or a fixed connection. It can be detachably connected or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or one or more intervening elements may also be present. The terms "first", "second", "third", etc. are only used to facilitate the description of the present technical solution and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, Features defined as "first," "second," "third," etc. may explicitly or implicitly include one or more of these features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the present invention in unnecessary detail.

Example 1

As shown in Figure 1, it is an atomizing core of the present invention, which is used in an electronic atomization device. The atomizing core includes a heating part 1, and the atomizing core also includes at least one liquid conducting part 2 connected to the heating part 1. , the surface of the liquid guide part 2 is formed with a plurality of liquid guide grooves 20 arranged in parallel and spaced apart and having capillary force. The number of the liquid guide grooves 20 can be two or more, and is not specifically limited here. Correspondingly, the width of the liquid guide groove 20 can be between 50 micrometers and 1000 micrometers; its depth can be between 50 micrometers and 1000 micrometers. The specific size of the liquid guide groove 20 can be adjusted according to the number of settings and the actual situation. There is no specific limit to this.

As shown in Figure 2, in one embodiment, at least one heating part 1 and the liquid conduction part 2 are of an integrated structure, that is to say, the atomizer core is integrally sintered and formed, and the material of the heating part 1 has a conductive function. Macroscopically, it is composed of a uniform material. Microscopically, it can be composed of a single-phase conductive material, or it can be composed of a multi-phase conductive material composed of a uniform mixture of multi-phase materials. Therefore, the conductive materials of the heating part 1 and the liquid conducting part 2 can be metal, metallic glass, cermet or conductive ceramic composite oxide, and the resistance value can be adjusted by adjusting the content of each component. Of course, other processes can also be used to connect the heating part 1 and the liquid conducting part 2. For example, the middle layer is the heating part 1, which can be a heating circuit or a whole-page heating; when the heating part 1 is dense When the entire page is heated, it not only acts as a heating element, but also serves as a support body to provide mechanical strength support for the atomizing core. One or both sides of the heating part 1 is the liquid conducting part 2. The heating part 1 and the liquid conducting part 2 can be connected by adhesion or other methods, and can be adjusted according to the actual situation, which is not limited here.

As shown in FIG. 3 , further, the number of the liquid conducting part 2 may be one, that is, only the liquid conducting part 2 located on one side of the heating part 1 is included. In another embodiment, the number of liquid guiding parts 2 can be two, and double-sided atomization is used, which has the significant advantage of large atomization volume. Specifically, the liquid guide part 2 includes a first liquid guide part 21 and a second liquid guide part 22 arranged on opposite sides of the width direction of the heating part 1. The liquid guide grooves 20 are respectively arranged in parallel and spaced apart on the first liquid guide part 21 and the second liquid guide part 22. The second liquid conducting part 22 , that is, the surface of the first liquid conducting part 21 is formed with a plurality of liquid conducting grooves 20 arranged in parallel and spaced apart with capillary force. Similarly, the surface of the second liquid conducting part 22 is also formed with multiple liquid conducting grooves 20 . There are two liquid guide grooves 20 with capillary force arranged at parallel intervals. The liquid guide part 2 can realize the functions of liquid guide, liquid storage and atomization at the same time.

Furthermore, the shape of the liquid-conducting part 2 is preferably square, but it can also be in other shapes as needed; it is understandable that accordingly, the shapes and sizes of the heating part 1 and the liquid-conducting part 2 can be the same, which are not limited here. The liquid-conducting parts 2 on both sides are designed to have a certain resistance so that they have a heating function. The purpose is to increase the atomization speed and meet the rapid atomization function. The middle heating part 1 is designed to have a high resistance value, while the liquid conduction parts 2 on both sides are designed to have a low resistance value, in order to prevent the heating part 1 from dry burning; when the power is turned on, the main reason is that the resistance of the heating part 1 in the middle is large. For heating, the small resistance of the liquid-conducting parts 2 on both sides plays a secondary heating role; especially when there is a local insufficient oil supply inside the liquid-conducting parts 2 on both sides, the gradient resistor design can effectively prevent the heating part 1 from dry burning. And if it is designed to have a uniform resistance, dry burning will be inevitable when there is a local insufficient oil supply in the liquid-conducting part 2.

Furthermore, a first electrode 41 and a second electrode 42 are respectively provided on opposite sides in the length direction of the heating part 1. Electricity is conducted between the first electrode 41 and the second electrode 42 for the heating part 1 to generate heat. The installation directions of the first electrode 41 and the second electrode 42 and the liquid conduction groove 20 are parallel to each other. In this embodiment, the electrodes are provided on the end surface of the heating part 1 so that the main heating part 1 of the atomizing core is located in the middle of the heating part 1. Especially It is located between the liquid guide grooves 20 distributed symmetrically on both sides, where the current path is the narrowest and the heat generation is the largest. In addition, the heating area and atomization area can be controlled by adjusting the height of the electrode. Understandably, the first electrode 41 and the second electrode 42 include a positive electrode and a negative electrode with opposite polarities. If the first electrode 41 is a positive electrode, the second electrode 42 is a negative electrode; conversely, if the first electrode 41 is a negative electrode, the second electrode 42 is a negative electrode. The two electrodes 42 are positive electrodes.

In other embodiments, the heating part 1 includes an electromagnetic heating unit, and the heating part 1 generates heat through electromagnetic induction of the electromagnetic heating unit. The heating part 1 and/or the liquid conducting part 2 can also be made of materials that can be heated by electromagnetic induction, and their shape and structure remain unchanged. The atomizer core generates heat through electromagnetic induction, and accordingly, the electrode structure can be omitted. Specifically, the heating part 1 is placed in the middle of the peripheral magnetic field, so that the heating part 1 is the main induction heating area, and the liquid conducting groove 20 with capillary force of the liquid conducting part 2 generates less heat. When the heating part 1 and the liquid-conducting part 2 are both made of materials that can be heated by electromagnetic induction, the level of electromagnetic induction heating can also be achieved according to the level of magnetic permeability. The middle heating part 1 still plays the main heating role and the liquid-conducting part still plays a main heating role. Part 2 plays an auxiliary role in heating.

Further, the liquid guide groove 20 of the first liquid guide part 21 and the liquid guide groove 20 of the second liquid guide part 22 are arranged symmetrically. In some embodiments, the liquid guide grooves 20 of the first liquid guide part 21 and the liquid guide grooves 20 of the second liquid guide part 22 are arranged in a staggered arrangement. It is preferable to set it up symmetrically, so as to ensure that when generating heat, the atomized liquid is mainly located in the heating area in the middle of the heating part 1, and the heat flux density is more concentrated and the heating rate is faster.

As shown in Figure 6, further, the atomizing core further includes a connecting part 8 for fixing or sealing. The connecting part 8 extends axially along the liquid guide part 2. The connecting part 8 is also formed with a liquid guide extending along the axial direction. slot 20. The connection part 8 is a non-atomized area, which is mainly used for fixing or sealing. In order to improve energy utilization and increase the atomization rate, it is necessary to minimize the heat transfer to the non-atomization area, so the height of the non-atomization area should be shortened as much as possible, that is, the height of the connecting part 8 needs to be smaller than the height of the liquid conducting part 2, and The height of the connecting part 8 is as small as possible.

Considering that reducing the height of the non-atomized area will lead to the risk of seal failure, the atomized area and the non-atomized area can be hollowed out. Therefore, further, the connecting part 8 is provided with a heat-insulating groove 81 , the heat-insulating groove 81 crosses the plurality of liquid guide grooves 20 , and its two ends in the length direction are located in the connecting part 8 , that is, the length of the heat-insulating groove 81 Less than the length of the connecting part 8 , the heat insulation groove 81 does not penetrate the transverse length direction of the connecting part 8 . Specifically, the width of the heat insulation groove 81 is less than or equal to 1 mm to ensure that the atomized liquid in the liquid storage chamber 5 can be adsorbed into the liquid guide groove 20 through capillary force to complete atomization.

Furthermore, the heating part 1 may have a dense structure, that is, the heating part 1 may adopt a dense matrix. In other embodiments, the heating part 1 can be a porous structure with a certain porosity and pore size, that is, the heating part 1 can be made of a porous matrix, such as porous ceramics; specifically, the porosity of the porous matrix can be between 0 and 80%. Between, the pore diameter range is 10~100μm. It is preferably a porous structure. The porous structure of the heating part 1 can reduce the overall heat capacity of the atomization core, thereby increasing the atomization rate and improving the mist consumption ratio. The multiple liquid guide grooves 20 formed on the surface of the liquid guide part 2 can assist in improving the mist conductivity. oil speed; and the heating part 1 adopts a porous structure, so that when the liquid is atomized, the heating part 1 between the liquid guide grooves 20 can also participate in the atomization, which can increase the atomization amount.

Furthermore, the material of the heating part 1 is any one of metal, cermet, metallic glass, conductive ceramic and their composite oxides. Furthermore, the cermet is made by compounding at least one of metal or metal alloy and ceramic material. Specifically, the ceramic material may include at least one of aluminum oxide, zirconium oxide, silicon oxide, yttrium oxide, lanthanum oxide, cerium oxide, and magnesium oxide.

Furthermore, the atomizing core is an upright atomizing core, and the plurality of liquid guide grooves 20 are extended from bottom to top along the longitudinal direction. The atomizing core is arranged in a vertical structure. The plurality of liquid guide grooves 20 on the liquid guide parts 2 on both sides of the heating part 1 can be regarded as liquid storage channels. This liquid storage channel only stores the atomized liquid required for atomization. The heating part 1 can be regarded as an integrated heating plane. During atomization, ideally, the atomized liquid located inside the liquid guide groove 20 can be fully atomized, and a high degree of aroma reduction of the atomized liquid can be achieved. The vertically arranged liquid guide groove 20 can greatly speed up the oiling rate, so that the atomized liquid can be replenished in time between each component during the suction process; in addition, the vertical liquid guide groove 20 makes the liquid guide part 2 in a semi-hollow state, which can Effectively reduce the overall heat capacity of the atomization core and improve atomization efficiency.

The following describes how to prepare the atomizing core of this embodiment using a simple "casting-hot pressing-co-sintering" process. Obviously, the atomizing core of the present invention can also be prepared by using other processes to achieve co-sintering, which is also within the protection scope of the present invention.

First, weigh 30g of 316L (1 micron) and 20g of 3YSZ (Y _0.03 Zr _0.97 O ₂ ) according to the 316L/3YSZ weight ratio of 65:35, then weigh 1.5g of triethanolamine (TEA) and 30g of alcohol, and add them together to the roller ball mill. Disperse by ball milling in the tank for 8 hours, then add 1.4g polyethylene glycol (PEG400), 1.2g dibutyl phthalate (DBP) and 1.5g polyvinyl butyral (PVB) and continue ball milling for 8 hours to prepare the viscosity A suitable slurry for tape-casting is prepared using a tape-casting method with a knife height of 300 microns to obtain a blank (100mm*100mm). The five layers of blanks are laminated together, vacuum-sealed, and then pressed into a single blank using warm isostatic pressing. The entire blank was placed in the air at 500°C for debinding treatment for 4 hours, and then placed in a vacuum furnace for sintering treatment at 1350°C for 4 hours to obtain a sintered body. The sintered body is then cut and processed into an atomizer core substrate with a certain size and shape. The cutting program is set in advance, and a mechanical cutting machine is used to prepare a plurality of liquid guide grooves 20 with capillary force arranged at parallel intervals on the surface of the above-mentioned liquid guide part 2. The depth, width and number of the liquid guide grooves 20 can be as needed. Flexible settings. Finally, end electrodes are prepared by welding on both sides of the atomization core with the liquid guide groove 20, and the welding height is 3 mm, thereby completing the preparation of the atomization core, and the resistance of the atomization core is 0.75Ω.

When the atomizing core proposed in this embodiment is in use, when the circuit is turned on, the heating part 1 quickly heats up to the atomizing temperature, and the heat is conducted to the liquid guide part 2 and atomizes the atomized liquid. Both liquid part 2 can participate in atomization.

The atomizing core in this embodiment uses an integrated structure for overall heating. However, due to its special structural design, the main heating area of the heating part 1 is located inside the atomizing core. During operation, the heat is transferred to the conductors located on both sides of the heating part 1. The atomized liquid on the liquid part 2 enables the atomized liquid to be atomized; it can enable the atomized liquid to be atomized in equal proportions, improve the reduction degree of the atomized liquid, and at the same time prevent the heating part 1 from dry burning. The atomizing core adopts a vertical structure design, which realizes the separation of the atomized liquid in the liquid storage chamber 5 and the atomized liquid being heated; the connection area between the heating part 1 and the liquid storage chamber 5 is very small, so that the heat generated by the heating part 1 The heat is transferred to the atomized liquid that needs to be atomized as much as possible, which can reduce energy consumption and have good taste consistency; and the atomizing core can be double-sided atomized, with a large amount of atomization and a strong throat hit, which can bring Good smoking experience.

Example 2

As shown in Figure 4, in this embodiment, the atomization core is an improvement based on Embodiment 1. The difference is that the atomization core also includes a support part 3. The support part 3 is disposed away from the heating part 1 and away from the liquid conduction part. On one side of the portion 2; it is understood that the shape, size, etc. of the supporting portion 3 can be adjusted accordingly according to the sizes of the heating portion 1 and the liquid conducting portion 2, and are not limited here. The liquid-conducting part 2 and the plurality of liquid-conducting grooves 20 formed on the surface of the liquid-conducting part 2 may have an integrated structure, that is, the liquid-conducting part 2 and the liquid-conducting grooves 20 on the surface of the liquid conducting part 2 are formed by integral sintering. Specifically, the liquid guide part 2 includes a first liquid guide part 21 and a second liquid guide part 22 arranged on opposite sides in the width direction of the heating part 1. The liquid guide grooves 20 are respectively arranged in parallel and spaced apart on the first liquid guide part 21 and the second liquid guide part 22. On the second liquid guide part 22, at this time, the first liquid guide part 21 and the liquid guide groove 20 arranged on its surface are an integral structure, and the second liquid guide part 22 and the liquid guide groove 20 arranged on its surface are an integrated structure. And the support part 3 is provided between the first liquid guide part 21 and the second liquid guide part 22. More specifically, the support part 3 can be a reinforcing rib. The material of the support part 3 is preferably a material with high mechanical strength. The support part 3 A dense structure is preferred, and the support part 3 is provided to improve the overall mechanical strength of the atomizing core. The heating part 1 is arranged on both sides of the support part 3. The material of the heating part 1 has a conductive function and is composed of a uniform material macroscopically. Microscopically, it can be composed of a single-phase conductive material or a uniform mixture of multi-phase materials. Composed of complex-phase conductive materials. Therefore, the conductive material of the heating part 1 can be metal, metallic glass, cermet or conductive ceramic composite oxide.

In this embodiment, the heating part 1 may have a dense structure, that is, the heating part 1 may adopt a dense matrix. In other embodiments, the heating part 1 can be a porous structure with a certain porosity and pore size, that is, the heating part 1 can be made of a porous matrix, such as porous ceramics; different from Embodiment 1, the porosity of the porous matrix can be Between 30 and 80%, the pore size ranges from 10 to 100 μm; the porous structure has a high porosity, providing channels for atomized liquid conduction and aerosol release.

According to the 316L/3YSZ weight ratio of 60:40, weigh 30g of 316L (1 micron) and 20g of 3YSZ (Y _0.03 Zr _0.97 O ₂ ), then weigh 1.5g of triethanolamine (TEA) and 30g of alcohol, and add them to the roller ball mill tank. Disperse by ball milling for 8 hours, then add 1.4g polyethylene glycol (PEG400), 1.2g dibutyl phthalate (DBP) and 1.5g polyvinyl butyral (PVB) and continue ball milling for 8 hours to prepare a product with suitable viscosity. The slurry for tape casting is prepared by the tape casting method using a knife height of 75 microns to obtain the intermediate heating layer blank (100mm*100mm). Weigh 70g of 3YSZ ceramic powder, 2.2g of triethanolamine (TEA) and 100g of alcohol, add them to a roller ball mill tank and ball mill to disperse for 8 hours, then add 1.8g of polyethylene glycol (PEG400) and 2g of dibutyl phthalate (DBP). ) and 2g polyvinyl butyral (PVB) and continue ball milling for 8 hours to prepare a slurry with suitable viscosity for casting. The reinforced layer blank (100mm*100mm) was prepared using the casting method using a knife height of 100 microns. Three layers of porous layer blanks, one layer of reinforcing layer blanks and three layers of porous layer blanks are laminated together in sequence. After vacuum molding, they are pressed into a whole blank using warm isostatic pressing. The entire green body was placed in the air at 500°C for debinding treatment for 4 hours, and then placed in a vacuum furnace for sintering treatment at 1350°C for 4 hours to obtain a sintered body with a sandwich structure. The sintered body is then cut and processed into a multi-layer sheet-shaped atomizer core with a certain size and shape. The thickness of the heating layer is about 50 microns, the thickness of the porous layer (one side) is 480 microns, the porosity is 67%, and the pore diameter (pore throat) is 20 microns. The cutting program is set in advance, and a mechanical cutting machine is used to prepare the liquid guide groove 20 on the above-mentioned atomization core. The depth, width and quantity of the liquid guide groove 20 can be flexibly set according to needs. Finally, weld the end electrodes on both sides of the above-mentioned atomization core with a welding height of 3mm to complete the preparation of the atomization core. The resistance of the atomization core is 0.8Ω. The above-mentioned heat-generating layer blank is the heat-generating part 1, the porous layer blank is the liquid-conducting part 2, and the reinforcing layer blank is the supporting part 3.

The atomizing core of this embodiment has a multi-layer structure, with a support part 3 in the middle, and a heating part 1 on both sides of the support part 3. The outside of the heating part 1 away from the support part 3 is a liquid-conducting part 2. The surface of the part 2 is formed with a plurality of liquid guide grooves 20 with capillary force arranged at parallel intervals. The liquid guide part 2 can realize the functions of liquid guide, liquid storage and atomization at the same time; the atomizing core adopts a vertical structure design to achieve It has the function of separating the atomized liquid in the liquid storage chamber 5 and the atomized liquid being heated, which can maximize the aroma reduction degree of the atomized liquid and reduce the atomized liquid that has not yet been atomized in the liquid storage chamber 5 and the heating part. 1 contact, thereby reducing energy consumption; and the atomization core is body atomization, which is conducive to the release of the fragrance of the atomization liquid; it can be double-sided atomization, with a large atomization volume, which can bring a good smoking experience.

Example 3

As shown in Figure 5, in this embodiment, the atomizing core is an improvement based on Embodiment 1. The difference is that the atomizing core also includes a supporting part 3. The supporting part 3 is provided between the heating part 1 and the liquid conducting part. 2, it can be understood that the shape, size, etc. of the supporting part 3 can be adjusted accordingly according to the sizes of the heating part 1 and the liquid conducting part 2, and are not limited here. The heating part 1 mainly plays the role of heating, the supporting part 3 is used to provide strength, and the liquid guide part 2 also has the functions of oil conduction, oil storage and atomization. The liquid-conducting portion 2 and the plurality of liquid-conducting grooves 20 formed on the surface of the liquid-conducting portion 2 may have an integrated structure, that is, the liquid-conducting portion 2 and the liquid-conducting grooves 20 on the surface of the liquid conducting portion 2 are formed by integral sintering. Specifically, the liquid guide part 2 includes a first liquid guide part 21 and a second liquid guide part 22 arranged on opposite sides in the width direction of the heating part 1. The liquid guide grooves 20 are respectively arranged in parallel and spaced apart on the first liquid guide part 21 and the second liquid guide part 22. On the second liquid guide part 22, at this time, the first liquid guide part 21 and the liquid guide groove 20 arranged on its surface are an integral structure, and the second liquid guide part 22 and the liquid guide groove 20 arranged on its surface are an integrated structure. And the support parts 3 are respectively provided on both sides of the heating part 1 located in the middle. More specifically, the support part 3 can be a reinforcing rib. The material of the support part 3 is preferably a material with high mechanical strength. The support part 3 is preferably made of a material with high mechanical strength. If the number of supporting parts 3 is two, the two supporting parts 3 can be symmetrically arranged on both sides of the heating part 1; the purpose of providing the supporting parts 3 is to improve the overall mechanical strength of the atomizing core.

In this embodiment, the liquid guide portion 2 can have a dense structure, which is beneficial to improving the strength of the atomization core and allows the preparation of more liquid guide grooves 20 within the same size range. In other embodiments, the liquid-conducting part 2 can be a porous structure with a certain porosity and pore diameter. The porosity of the porous-structured liquid-conducting part 2 can be between 30 and 80%, and the pore diameter can be in the range of 10 and 100 μm. ; The porous structure has a high porosity, providing channels for the conduction of atomized liquid and aerosol release; when the closed-cell structure is used as the main structure, on the one hand, it can improve the strength of the atomizing core, and on the other hand, it can effectively reduce the heat capacity of the atomizing core. , which is conducive to improving the atomization efficiency of the atomization core; when the open-pore structure is mainly used, the liquid guide part 2 also has the functions of oil conduction, oil storage and atomization. Furthermore, the end face of the liquid guide trough 20 has a dense structure, and the inner wall of the liquid guide trough 20 has a porous structure, so that the aerosol cannot flow out from the end face of the liquid guide trough 20 , but can only flow out from the liquid guide channel formed on the inner wall of the liquid guide trough 20 . .

Furthermore, the heating part 1 can be a heating circuit (such as a thick film heating circuit) and a metal heating wire, or it can be a dense full-surface heating part 1 or a full-surface heating part 1 with a porous structure. When the middle heating part 1 is a dense whole-surface heating layer, it can also provide strength support for the atomization core. For the heating part 1 with surface heating in the middle, the conductive material of the heating part 1 can be metal, metallic glass, cermet or conductive ceramic composite oxide. By controlling the aspect ratio, thickness and porosity of the porous structure heating part 1, the amount of atomization during one suction process and the replenishment rate of atomized liquid can be controlled.

According to the 316L/3YSZ weight ratio of 60:40, weigh 30g of 316L (1 micron) and 20g of 3YSZ (Y _0.03 Zr _0.97 O ₂ ), then weigh 1.5g of triethanolamine (TEA) and 30g of alcohol, and add them to the roller ball mill tank. Disperse by ball milling for 8 hours, then add 1.4g polyethylene glycol (PEG400), 1.2g dibutyl phthalate (DBP) and 1.5g polyvinyl butyral (PVB) and continue ball milling for 8 hours to prepare a product with suitable viscosity. The slurry for tape casting is prepared by the tape casting method using a knife height of 75 microns to obtain the intermediate heating layer blank (100mm*100mm). Weigh 35.1g of 3YSZ ceramic powder, 35.1g of polystyrene microspheres (PS balls), 2.2g of triethanolamine (TEA) and 100g of alcohol, add them to a roller ball mill tank and ball mill to disperse for 8 hours, then add 1.8g of polyethylene glycol ( PEG400), 2g dibutyl phthalate (DBP) and 2g polyvinyl butyral (PVB) were ball milled for 8 hours to prepare a tape-casting slurry with suitable viscosity. The tape-casting method was used with a knife height of 300 microns. A porous layer blank (100mm*100mm) was prepared. Three layers of porous layer blanks, one layer of heating layer blanks and three layers of porous layer blanks are laminated together in sequence. After vacuum molding, they are pressed into a whole blank using warm isostatic pressing. The whole blank is placed in the air and debonded at 500 degrees Celsius for 4 hours, and then placed in a vacuum furnace and sintered at 1350 degrees Celsius for 4 hours to obtain a sintered body with a sandwich structure. The sintered body is then cut and processed into a certain size. And the shape of the multi-layer sheet atomizer core. The thickness of the heating layer is about 50 microns, the thickness of the porous layer (one side) is 480 microns, the porosity is 67%, and the pore diameter (pore throat) is 20 microns. The cutting program is set in advance, and a mechanical cutting machine is used to prepare the liquid guide groove 20 on the above-mentioned atomization core. The depth, width and quantity of the liquid guide groove 20 can be flexibly set according to needs. Finally, end electrodes are prepared by welding on both sides of the atomization core with the liquid guide groove 20 to complete the preparation of the atomization core. The resistance of the atomization core is 0.8Ω. The above-mentioned heat-generating layer blank is the heat-generating part 1, the porous layer blank is the liquid-conducting part 2, and the reinforcing layer blank is the supporting part 3.

The atomizing core of this embodiment has a multi-layer structure, and the middlemost part is the heating part 1, which can be either a heating circuit or a whole-page heating. The two sides of the heating part 1 are support parts 3, and the outer side of the support part 3 away from the heating part 1 is the liquid guide part 2. The surface of the liquid guide part 2 is formed with a plurality of liquid guide grooves with capillary force arranged in parallel and spaced apart. 20, which significantly reduces the heat capacity of the atomizing core and greatly improves the atomization efficiency of the atomizing core; at the same time, the liquid guide groove 20 significantly accelerates the transmission of atomized liquid and can prevent the heating part 1 from dry burning; the liquid guide part 2 can It realizes the functions of liquid guiding, liquid storage and atomization at the same time; the atomization core adopts a vertical structure design to realize the separation function of the atomization liquid in the liquid storage chamber 5 and the atomization liquid being heated, which can maximize the efficiency of the atomization liquid. The aroma reduction degree and the reduction of the contact between the atomized liquid that has not yet been atomized in the liquid storage chamber 5 and the heating part 1 are reduced, thereby reducing energy consumption; it can be a double-sided atomization, with a large atomization amount, which can bring a good smoking experience.

The present invention also constructs an atomizer, which includes an atomization shell and the above-mentioned atomization core. The atomization shell is provided with a liquid storage chamber 5 for storing atomized liquid, and the atomization core is connected with the liquid storage chamber 5 . Further, an oil guide 6 is provided at the liquid outlet of the liquid storage chamber 5, and the liquid storage chamber 5 supplies liquid to the atomizing core in a vertical direction through the oil guide 6. The design of the upright atomizing core realizes the separation of the atomized liquid in the liquid storage chamber 5 and the atomized liquid being heated; the connection area between the heating part 11 and the liquid storage chamber 5 is very small, so that the heat generated by the heating part 11 is minimized. It can be transferred to the atomized liquid that needs to be atomized, which can reduce energy consumption.

Specifically, the oil guide member 6 can be porous ceramics, liquid-conducting cotton or a silicone sleeve. The liquid outlet of the liquid storage chamber 5 is provided with a grooved base 7 for connecting to the atomizing core. The base 7 can be a silicone base 7. The upright atomizing core is connected to the oil guide 6 and installed together. On the base 7, the atomized liquid at the liquid outlet of the liquid storage chamber 5 is supplied to the atomizing core in the vertical direction. As shown in Figure 7, in one embodiment, the oil guide 6 is made of porous ceramic, and is located between the atomizing core and the liquid storage chamber 5, and is in contact with the atomizing core to serve as a supplementary channel for the atomizing liquid. As shown in Figures 9 and 10, in another embodiment, the oil guide 6 is a silicone sleeve. The upper part of the silicone sleeve is sealed with the atomization core, and the lower part is connected to the liquid storage chamber 5 through a silicone hose to realize mist replenishment. Liquid dispersion and leakage prevention functions.

In order to further improve the energy utilization rate, the ineffective heating area can also be completely removed. As shown in Figure 8, the oil guide part 6 can be selected as liquid-conducting cotton, which can achieve soft contact between the atomizing core and the cotton. At this time, the atomizer core only needs to be fixed without considering the sealing, and the cotton acts as the liquid storage chamber 5 to store liquid and lock the liquid to seal and prevent leakage. Due to capillary action, the atomizer can be transmitted from the cotton to the liquid conducting part 2 and the heating part 1. It is worth noting that in order to maximize energy utilization, the atomizing core can be designed to be suspended in the air to reduce contact with the atomizing liquid in the liquid storage chamber 5. At this time, the atomizing liquid can be transferred to the atomizing core through pumping technology. superior.

It can be understood that the above embodiments only express the preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention; it should be noted that for those of ordinary skill in the art, In other words, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the present invention; therefore, anything falling within the scope of the claims of the present invention All equivalent transformations and modifications shall fall within the scope of the claims of the present invention.

Claims

An atomization core for an electronic atomization device, including a heating part (1), characterized in that the atomization core also includes at least one liquid conducting part (2) connected to the heating part (1), so The surface of the liquid guide portion (2) is formed with a plurality of liquid guide grooves (20) arranged in parallel and spaced apart and having capillary force.
The atomizing core according to claim 1, characterized in that at least one of the heating parts (1) and the liquid conducting part (2) are of an integrated structure.
The atomization core according to claim 1, characterized in that the atomization core further includes a support part (3), the support part (3) is arranged on the heating part (1) away from the liquid conduction part (2) On one side surface.
The atomizing core according to claim 1, characterized in that the atomizing core further includes a supporting part (3), and the supporting part (3) is provided between the heating part (1) and the liquid conducting part. (2) between.
The atomizing core according to any one of claims 1 to 4, characterized in that the liquid conducting part (2) includes a first liquid conducting part (1) disposed on opposite sides in the width direction of the heating part (1). 21) and the second liquid guide part (22), the liquid guide grooves (20) are arranged in parallel and spaced apart on the first liquid guide part (21) and the second liquid guide part (22) respectively.
The atomizing core according to any one of claims 1 to 4, characterized in that a first electrode (41) and a second electrode (42) are respectively provided on opposite sides in the length direction of the heating part (1), so Electricity is conducted between the first electrode (41) and the second electrode (42) for the heating part (1) to generate heat.
The atomization core according to any one of claims 1 to 4, characterized in that the heating part (1) includes an electromagnetic heating unit, and the heating part (1) generates heat through electromagnetic induction of the electromagnetic heating unit.
The atomization core according to claim 5, characterized in that the liquid guide groove (20) of the first liquid guide part (21) and the liquid guide groove (20) of the second liquid guide part (22) Symmetrical setup.
The atomization core according to claim 5, characterized in that the liquid guide groove (20) of the first liquid guide part (21) and the liquid guide groove (20) of the second liquid guide part (22) Staggered settings.
The atomization core according to any one of claims 1 to 4, characterized in that the atomization core also includes a connection part (8) for fixing or sealing, and the connection part (8) is along the guide The liquid part (2) is arranged to extend axially.
The atomization core according to claim 10, characterized in that a heat insulation groove (81) is provided on the connecting part (8), and the heat insulation groove (81) crosses a plurality of the liquid guide grooves ( 20), and its two ends are located in the connecting part (8).
The atomization core according to claim 11, characterized in that the width of the heat insulation groove (81) is less than or equal to 1 mm.
The atomizing core according to any one of claims 1-4, characterized in that the heating part (1) has a dense structure.
The atomizing core according to any one of claims 1-4, characterized in that the heating part (1) has a porous structure.
The atomizing core according to any one of claims 1 to 4, characterized in that the material of the heating part (1) is any one of metal, cermet, metallic glass and conductive ceramics and their composite oxides. .
The atomization core according to claim 15, characterized in that the cermet is made of at least one of metal or metal alloy and ceramic material.
The atomization core according to claim 16, wherein the ceramic material includes at least one of aluminum oxide, zirconium oxide, silicon oxide, yttrium oxide, lanthanum oxide, cerium oxide and magnesium oxide.
The atomizer core according to claim 1, characterized in that the atomizer core is an upright atomizer core, and the plurality of liquid guide grooves (20) extend from bottom to top.
An atomizer, characterized in that it includes an atomization housing and an atomization core according to any one of claims 1 to 18, and a liquid storage chamber (5) for storing atomization liquid is provided in the atomization housing. ), the atomizing core is connected with the liquid storage chamber (5).
The atomizer according to claim 19, characterized in that an oil guide part (6) is provided at the liquid outlet of the liquid storage chamber (5), and the liquid storage chamber (5) passes through the oil guide part. Part (6) supplies liquid to the atomizing core in the vertical direction.
The atomizer according to claim 20, characterized in that the oil guide part (6) is porous ceramics, liquid guide cotton or silicone sleeve.
An electronic atomization device, characterized in that it includes a power supply component and the atomizer according to any one of claims 19-21, and the power supply component is connected to the atomizer and supplies power to the atomizer.