WO2023134314A1

WO2023134314A1 - Atomization core, atomizer, and electronic atomization device

Info

Publication number: WO2023134314A1
Application number: PCT/CN2022/134782
Authority: WO
Inventors: 张钊; 罗洪梁; 肖从文
Original assignee: 深圳麦克韦尔科技有限公司
Priority date: 2022-01-11
Filing date: 2022-11-28
Publication date: 2023-07-20
Also published as: CN114587021A

Abstract

Disclosed in the present application are an atomization core, an atomizer and an electronic atomization device. The atomization core comprises a liquid guide body and a heating body, and the liquid guide body is provided with a liquid absorption surface and an atomization surface which are oppositely arranged, and used for guiding an aerosol generation matrix from the liquid absorption surface to the atomization surface; and the heating body is arranged on the atomization surface and is used for heating and atomizing the aerosol generation substrate to generate aerosol. The heating body comprises at least two sections of curved heating bodies which are connected in parallel. In the present application, the temperature field distribution of the heating body is more uniform, the thermal stress of a heating film is reduced to a greater extent, and a cracking risk caused by stress is reduced. During use, the service life can be prolonged by more than two times, and the taste, the vapor concentration and the throat hit are enhanced.

Description

Atomization core, atomizer and electronic atomization device

【CROSS-REFERENCE TO RELATED APPLICATIONS】

This application claims priority to Chinese patent application 2022100279688 filed on January 11, 2022, the entire contents of which are incorporated herein by reference.

【Technical field】

The present application relates to the technical field of atomizers, in particular to an atomization core, an atomizer and an electronic atomization device.

【Background technique】

In related technologies, an electronic atomization device is mainly composed of an atomizer and a power supply assembly. Wherein, the atomizing core in the atomizer is the core component, and the atomizing core is provided with a heating element for heating the aerosol generating substrate to generate the aerosol. However, when the heating element is in working condition, uneven heating aggravates the formation of soot, which greatly reduces the service life of the atomizing core and seriously affects the customer experience.

【Content of utility model】

In view of this, the present application provides an atomizing core, an atomizer and an electronic atomizing device to solve the problems in the prior art that S-film is used in the layout of the heating element, which causes serious soot and reduces the service life of the atomizing core.

In order to solve the above technical problems, the first technical solution provided by this application is: provide an atomizing core, including a conductive liquid and a heating element, the conductive liquid has a liquid-absorbing surface and an atomizing surface oppositely arranged, and is used for dispelling the aerosol The generating substrate is guided from the liquid absorbing surface to the atomizing surface; the heating element is arranged on the atomizing surface for heating and atomizing the aerosol generating substrate to generate aerosol. Wherein, the heating body includes at least two sections of curved heating bodies connected in parallel.

Wherein, the heating element further includes a positive electrode and a negative electrode electrically connected to the curved heating element.

Wherein, the at least two sections of the curved heating element are connected in parallel to form a closed ring portion; at least two connection points of the ring portion are electrically connected to the positive electrode and the negative electrode respectively.

Wherein, the interior of the annular portion further includes a strip portion connecting the two connection points on the annular portion.

Wherein, the strip portion is curved or straight.

Wherein, the heating element includes at least two annular portions connected in series; the second connection point of one of the two annular portions is electrically connected to the first connection point of the other annular portion ; The positive electrode and the negative electrode are respectively arranged on opposite sides of the two annular parts along the same diameter direction.

Wherein, a connecting portion is further included between the electrode and the connecting point; the connecting portion includes a parallel curved heating element and/or a straight heating element.

Wherein, the annular portion is a circular ring or an elliptical ring.

Wherein, the outer diameter of the annular portion is R1, the inner diameter of the annular portion is R2, and R1=2R2; wherein, the widths of the first connecting portion and the second connecting portion in a direction perpendicular to the same diameter are both L1 , and L1=R1; the outer circle of one of the two ring parts is tangent to the inner circle of the other ring part.

Wherein, both the first connection part and the second connection part are curved; the middle part of the first connection part is electrically connected to the first connection point, and the two ends are electrically connected to the positive electrode respectively. connection; the middle part of the second connection part is electrically connected to the second connection point, and the two ends are respectively electrically connected to the negative electrode.

Wherein, the first connecting portion and the second connecting portion are both semi-circular arcs, and the two ends of the first connecting portion are respectively connected to the positive electrode along two sides perpendicular to the same diameter direction. The two ends of the second connection part are in direct contact with the two ends of the negative electrode along the direction perpendicular to the same diameter.

Wherein, the heating element is a metal layer formed by thick film printing.

In order to solve the above-mentioned technical problems, the second technical solution provided by the present application is to provide an atomizer, which includes a housing and an atomizing core. The housing has an accommodating cavity; the atomizing core is arranged in the accommodating cavity and cooperates with the housing to form a liquid storage chamber; the atomizing core is used to heat and atomize the The aerosol-generating substrate of the chamber is used to form an aerosol; wherein, the atomizing core is the atomizing core described in any one of the above.

In order to solve the above technical problems, the third technical solution provided by this application is to provide an electronic atomization device, including an atomizer and a power supply assembly; wherein, the atomizer is the atomizer described in any one of the above device; the power supply component is electrically connected to the atomizer, and is used to supply power to the atomizer.

Beneficial effects of the present application: Different from the prior art, the atomizing core of the present application includes a conductive liquid and a heating body, and the conductive liquid has a liquid-absorbing surface and an atomizing surface oppositely arranged, which are used to separate the aerosol-generating substrate from the absorbent The liquid surface is guided to the atomizing surface; the heating element is arranged on the atomizing surface for heating and atomizing the aerosol generating substrate to generate aerosol. Wherein, the heating element includes a curved heating element. On the one hand, this application greatly reduces the thermal field superposition area of the product, and the design layout of the parallel circuit makes the temperature field distribution of the heating element more uniform. On the other hand, the heating film circuit is basically in a curved form, which greatly reduces the Thermal stress reduces the risk of cracking caused by stress, so that the life of this application can be increased by more than two times during use, and the taste, smoke concentration and throat hit feeling are all improved.

【Description of drawings】

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Fig. 1 is a schematic structural diagram of an electronic atomization device provided by the present application;

Fig. 2 is a schematic structural view of the atomizer provided by the present application;

Fig. 3 is a schematic structural diagram of an atomizing core in an embodiment provided by the present application;

Fig. 4 is a schematic top view structural diagram of the atomization core provided in Fig. 3;

Fig. 5 is a schematic structural view of the heating element in the first embodiment provided by the present application;

Fig. 6 is a schematic structural view of the heating element in the second embodiment provided by the present application;

Fig. 7 is a schematic structural diagram of the heating element in the third embodiment provided by the present application;

Fig. 8 is a schematic structural view of the heating element in the fourth embodiment provided by the present application;

Fig. 9 is an optical photograph of the S-shaped heating film of the prior art after 250 puffs of suction;

Fig. 10 is a temperature field distribution diagram of an S-shaped heating film in the prior art at 2.5W;

Fig. 11 is a temperature field distribution diagram of an S-shaped heating film in the prior art at 6.5W;

Fig. 12 is an optical photograph of the heating element of the first embodiment of the present application after 250 puffs of suction;

Fig. 13 is a temperature field distribution diagram of the heating element of the first embodiment of the present application under 2.5W;

Fig. 14 is a temperature field distribution diagram of the heating element of the first embodiment of the present application under 6.5W;

Fig. 15 is an optical photograph of the heating element of the second embodiment of the present application after sucking 250 puffs;

Fig. 16 is a temperature field distribution diagram of the heating element of the second embodiment of the present application under 2.5W;

Fig. 17 is a temperature field distribution diagram of the heating element of the second embodiment of the present application under 6.5W;

Fig. 18 is an optical photograph of the heating element of the third embodiment of the present application after 250 puffs of suction;

Fig. 19 is a temperature field distribution diagram of the heating element of the third embodiment of the present application under 2.5W;

Fig. 20 is a temperature field distribution diagram of the heating element of the third embodiment of the present application under 6.5W;

Fig. 21 is an optical photograph of the heating element of the fourth embodiment of the present application after pumping 250 puffs;

Fig. 22 is a temperature field distribution diagram of the heating element of the fourth embodiment of the present application under 2.5W;

Fig. 23 is a temperature field distribution diagram of the heating element of the fourth embodiment of the present application under 6.5W.

【Detailed ways】

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The terms "first" and "second" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first", "second", may explicitly or implicitly include at least one of the features. All directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship between the various components in a certain posture (as shown in the drawings) , sports conditions, etc., if the specific posture changes, the directional indication also changes accordingly. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or apparatuses.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

The inventors of the present application found that one of the main reasons for the uneven heating of the heating element of the atomizing core is that the layout of the heating element usually adopts an S-shaped heating film, and the entire heating film is equivalent to a series connection between two electrodes. resistance. For this reason, the present application solves the above-mentioned problems through an atomizing core adopting a new heating element structure, an atomizer, and an electronic atomizing device.

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of an electronic atomization device provided in this application.

The electronic atomization device includes an atomizer 1 and a power supply assembly 2 , and the power supply assembly 2 is connected to the atomizer 1 for supplying power to the atomizer 1 . Electronic atomization devices can be used for atomization of liquid substrates. The atomizer 1 is used to store the liquid aerosol generating substrate and atomize the aerosol generating substrate to form an aerosol that can be inhaled by the user. The liquid aerosol generating substrate can be a liquid substrate such as a liquid medicine, a plant grass leaf aerosol generating substrate, etc. . The atomizer 1 can be used in different fields, such as medical treatment, beauty treatment, recreational smoking and the like. The power supply assembly 2 includes a battery (not shown in the figure), an airflow sensor (not shown in the figure), and a controller (not shown in the figure), etc.; the battery is used to supply power to the atomizer 1 and control the heating power and heating time of the atomizing core 20, etc. , so that the atomizer 1 can atomize the aerosol-generating substrate to form an aerosol. The airflow sensor is used to detect changes in airflow or air pressure in the electronic atomization device, and the controller activates the electronic atomization device according to the airflow or air pressure changes detected by the airflow sensor. The atomizer 1 and the power supply assembly 2 can be integrated or detachably connected, and can be designed according to specific needs.

Please refer to FIG. 2 , which is a schematic structural diagram of the atomizer provided in this application.

The atomizer 1 includes a casing 10 and an atomizing core 20 , and the casing 10 has an accommodating cavity 11 . The atomizing core 20 and the casing 10 may be integrally provided with a non-detachable connection, or may be a detachable connection. In this embodiment, the atomizing core 20 and the housing 10 are detachably connected, and the atomizing core 20 is directly connected to the housing 10, so that there is no need to introduce an additional conduit between the atomizing core 20 and the housing 10 The detachable connection is realized, the volume of the atomizer 1 is reduced, and the use is more convenient. It can be understood that the atomizer 1 of the present application is a portable atomizer. The atomizing core 20 is disposed in the accommodating chamber 11 and cooperates with the casing 10 to form a liquid storage chamber 12 for storing the aerosol generating substrate. The atomizing core 20 can be used in different fields, such as medicine atomization, plant herbal liquid atomization and other fields, for heating and atomizing the aerosol generating substrate from the liquid storage chamber 12 to form an aerosol when energized. The atomizer 1 may also include a mounting base (not shown in the figure) for mounting the atomizing core 20 .

Specifically, a protrusion (not shown) is provided on the outer wall of the atomizing core 20, a chute (not shown) is provided on the outer wall of the casing 10, and a limiting block (not shown) is arranged in the chute. Align the protrusion on the atomizing core 20 with the chute on the housing 10 and insert it, rotate the atomizing core 20 or the housing 10, so that the protrusion is limited by the limit block in the chute, and realize the atomization core 20 The fixing with the casing 10 further realizes the detachable connection between the atomizing core 20 and the casing 10 . It can be understood that protrusions can also be provided on the outer wall surface of the housing 10, a chute can be provided on the outer wall surface of the atomizing core 20, and a limit block can be arranged in the chute to realize the connection between the atomizing core 20 and the housing 10. Detachable connection; the detachable connection between the atomizing core 20 and the housing 10 can also be realized by means of magnetic attraction. It only needs to realize the detachable connection between the atomizing core 20 and the housing 10 , and the specific implementation is not limited.

In one embodiment, the atomizing surface of the atomizing core 20 faces upward, which can increase the amount of atomization. When the atomizing surface faces upwards, the pins (not shown) of the atomizing core 20 can be set at any position of the atomizing core 20, but in this embodiment, the pins are set downwards, which can facilitate the atomization of the atomizer 1. Automated assembly. A suction channel 30 is provided on the side of the atomizing core 20 away from the power supply assembly 2 , and the suction channel 30 communicates with the atomizing chamber 201 . The suction port 31 on the side of the suction channel 30 away from the power supply assembly 2 communicates with the atmosphere, so that the aerosol in the atomization chamber 201 can flow out through the suction channel 30 and provide the user with food from the suction port 31 . In another embodiment, the atomizing surface of the atomizing core 20 faces downward.

Please refer to FIG. 3 and FIG. 4 , FIG. 3 is a schematic structural diagram of the atomizing core provided in an embodiment of the present application, and FIG. 4 is a schematic top view structural diagram of the atomizing core provided in FIG. 3 .

In the existing technology, the layout of the heating element basically adopts the S-film method. When the heating element is working, the heating is uneven and the central area of the S-film has a large thermal field superposition effect, especially when the high-viscosity atomization medium is used. During the process, the local high-temperature area aggravates the formation of soot and greatly reduces the service life of the atomizing core. At the same time, the puff performance of existing S film products on tobacco aerosol substrates is usually less than 300 puffs, and the atomization volume attenuation and smoke out during the puffing process often occur, which seriously affects the customer experience.

In order to solve the above-mentioned problems in the prior art, the atomizing core 20 provided by the present application includes a conductive liquid 21 and a heating body 22 . The guiding body 21 has a liquid-absorbing surface 212 and an atomizing surface 211 oppositely arranged along the height direction of the guiding body 21, for guiding the aerosol-generating substrate from the liquid-absorbing surface 212 to the atomizing surface 211. The heating element 22 is disposed on the atomizing surface 211 for heating and atomizing the aerosol generating substrate to generate aerosol.

Specifically, the guiding liquid 21 can store and guide the aerosol-generating matrix in the liquid storage chamber 12, and the guiding liquid 21 can be a loose porous material such as a fiber layer or porous ceramics. In this embodiment, the conductive liquid 21 is porous ceramics; or the conductive liquid 21 is a dense matrix, specifically dense ceramics or glass. Wherein the conductive liquid 21 can specifically be a porous ceramic substrate or a perforated dense substrate, and the perforated dense substrate can specifically be a perforated glass substrate or a dense ceramic substrate, etc., and the compact substrate has 211 vias. The conductive liquid 21 in this embodiment is porous ceramics. Porous ceramic materials are generally composed of aggregates, binders, and pore-forming agents and other components that have been sintered at high temperatures. The interior has a large number of pore structures that are connected to each other and to the surface of the material. Due to the high porosity, stable chemical properties, large specific surface area, low bulk density, low thermal conductivity and high temperature and corrosion resistance of porous ceramic materials, they have many applications in metallurgy, biology, energy, environmental protection and other fields. The guiding liquid 21 may be in the shape of a cylinder, a plate, or a ladder, and the present application does not specifically limit this.

Specifically, the guiding liquid 21 includes an atomizing surface 211 and a liquid absorbing surface 212 , and the guiding liquid 21 is also provided with a liquid absorbing groove 213 communicating with the liquid absorbing surface 212 . The liquid absorbing surface 212 and the liquid absorbing groove 213 are used to absorb the aerosol-generating substrate in the liquid storage chamber 12 , and then enter the atomizing surface 211 through the through hole of the atomizing surface 211 . The heating element 22 is disposed on the atomizing surface 211 for heating and atomizing the aerosol generating substrate entering the atomizing surface 211 from the through hole to generate aerosol for the user to inhale.

As shown in FIGS. 2 and 3 , the heating element 22 is a metal layer, which can be formed by screen printing metal paste and sintered, or formed by metal coating. Specifically, the heating element 22 can be realized by printing a layer of heat-generating coating, can be realized by a heating circuit, or can be realized by making a heat-generating sheet with the structure in the embodiment of the present application. The metal paste may contain one or more elements of Ag, Cu, Au, Ni, W, Ru, etc., and the metal or alloy material in the form of metal silk screen is filled into the through hole of the conductive liquid 21, and The porous ceramic conductive liquid 21 is matched and co-fired to form the heating element 22 . In this embodiment, the heating element 22 is prepared by thick film printing; specifically, it can be sintered by screen printing metal paste. Specifically, the metal paste is coated on the atomizing surface 211 according to the shape in this embodiment, and then sintered to form a curved heating body 22 with a certain thickness. Since the angular heating element 22 made by screen printing is easily broken or cracked due to thermal shock, the heating element 22 in this application adopts a curved shape, which can overcome the above problems, so that the heating element 22 provided by this application is more firm and More stable performance and longer service life.

The heating element 22 is electrically connected to the power supply assembly 2 through the electrode 24. The electrode 24 can be arranged on a part of the atomizing surface 211, or can extend to the edge of the atomizing surface 211, or to the side of the conductive liquid 21. This is not limited. The heating element 22 can generate heat after being energized, and heat the aerosol generating substrate guided by the conductive liquid 21, so that the aerosol generating substrate is atomized to form an aerosol. The heating element 22 is electrically connected to the battery and the controller of the power supply assembly 2, so that the battery can provide power for the heating element 22, and the controller can control the heating duration and heating power of the heating element 22.

In one embodiment, the heating element 22 includes at least two sections of curved heating elements connected in parallel, an electrode 24 and a connecting portion 25 . In this embodiment, at least two curve heating elements are connected in parallel to form a closed ring portion 23. The ring portion 23 includes a first connection point 233 and a second connection point 234. The first connection point 233 is used to connect the positive pole of the power supply, and the second connection point The connection point 234 is used to connect the negative pole of the power supply, so that the first curve section 231 and the second curve section 232 between the first connection point 233 and the second connection point 234 are arranged in parallel.

Specifically, the first curve segment 231 and the second curve segment 232 are arranged between the first connection point 233 and the second connection point 234 , and are connected through the first connection point 233 and the second connection point 234 . That is to say, the first curve segment 231 , the second curve segment 232 , the first connection point 233 and the second connection point 234 together constitute the annular portion 23 of the heating element 22 . Through the structural design of at least two parallel-connected curved heating elements, on the one hand, the current can flow on the parallel heating paths, making the current flow paths more, reducing the risk of a single path open circuit, and improving the reliability of the heating element On the other hand, the design of the arc or curved heating path greatly reduces the thermal field superposition area of the product, and the design layout of the first curved section 231 and the second curved section 232 parallel circuit makes the temperature field distribution of the heating element 22 more accurate. is uniform. On the other hand, the S-shaped heating film in the prior art is mainly straight lines, and only the corners where the straight lines are connected are curved lines, so it has the above-mentioned many disadvantages. Compared with the prior art in this application, the circuit of the heating element 22 is basically in the form of a curve, which greatly reduces the thermal stress of the heating element 22, reduces the risk of cracking caused by stress, and has high stability. Through the solution of this application, during the use of the electronic atomization device, the service life can be increased by more than two times, the mouthfeel, atomization concentration and throat hit feeling are all improved, and the user experience is improved. At the same time, the technical solution of the application improves the product security.

The electrode 24 includes a positive electrode 241 and a negative electrode 242 , and the connecting portion 25 includes a first connecting portion 251 and a second connecting portion 252 . The positive electrode 241 and the negative electrode 242 are respectively arranged on opposite sides of the annular portion 23, and the first connecting portion 251 is arranged between the positive electrode 241 and the first connection point 233, and electrically connects the positive electrode 241 and the first connection point 233 , the second connection portion 252 is disposed between the negative electrode 242 and the second connection point 234 , and electrically connects the negative electrode 242 and the second connection point 234 .

Specifically, it is possible for the positive electrode 241 and the negative electrode 242 to be symmetrically arranged on the upper and lower sides or the left and right sides of the annular portion 23 , as long as the connection between the heating element 22 and the electrode 24 can be realized. The connection part 25 can be a parallel curved heating element and/or a straight heating element, wherein the first connection part 251 is used to connect the first connection point 233 and the positive electrode 241, so that the heating element 22 is electrically connected to the positive electrode 241, and the second The connection part 252 is used to connect the second connection point 234 and the negative electrode 242, so that the heating element 22 is electrically connected to the negative electrode 242, so that the heating element 22 is connected to a power source, so as to heat and atomize the aerosol generating substrate when energized to generate aerosol.

In some embodiments, the annular portion 23 is a circular ring or an elliptical ring. The first connection point 233 and the second connection point 234 are located in the same diameter direction D of the ring or ellipse ring, and the positive electrode 241 and the negative electrode 242 are respectively arranged on opposite sides of the ring portion 23 along the same diameter direction D.

Specifically, the annular portion 23 may be a perfect circular ring or an elliptical ring, which is not limited in the present application. The first connection point 233 , the second connection point 234 , the positive electrode 241 and the negative electrode 242 are all arranged in the same diameter direction D of the ring portion 23 . Specifically, the first connection point 233 and the second connection point 234 are located on the same diameter of the ring portion 23, and the positive electrode 241 and the negative electrode 242 are respectively arranged on opposite sides of the ring portion 23 along the same diameter direction D, and are connected to The first connection point 233 and the second connection point 234 are respectively connected. That is, the first connection point 233 and the positive electrode 241 are located on the same side of the same diameter direction D of the annular portion 23 and its extension line and are connected, and the second connection point 234 and the negative electrode 242 are located on the same diameter direction D of the annular portion 23 and The same sides on the extension line are connected together, and the first connection point 233 and the second connection point 234 are located at both ends of the same diameter of the ring portion 23 .

In some embodiments, the atomizing core 20 also includes two electrode lead wires 16, one end of the two electrode lead wires 16 is buried in the conductive liquid 21 and electrically connected to the corresponding positive electrode 241 and negative electrode 242 respectively, and the other end extends Out of the atomizing surface 211, it is used to connect the battery.

In other embodiments, as shown in FIG. 2 , the bottom of the electrode 24 is provided with a thimble 26 in direct contact with the electrode 24 for conducting the heating element 22 and the power supply assembly 2 . When the thimble 26 is working, its stress direction is longitudinal, that is, the direction from the liquid-absorbing surface 211 to the atomizing surface 212 . When the thimble 26 exerts force, the inter-embedded structure of the conductive liquid 21 and the conductor lead wire can play a position-limiting role, enhance the stability of the conductive contact between the two, and at the same time have excellent mechanical properties, preventing the conductor lead wire from falling off from the conductive liquid 21. Conduction is also more stable.

Please refer to FIG. 5 . FIG. 5 is a schematic structural diagram of the heating element in the first embodiment provided by the present application.

As shown in FIG. 5 , in the first embodiment, the heating element 22 includes two annular parts 23 , and the second connection point 234 of one annular part 23 in the two annular parts 23 is connected to the first connection point 234 of the other annular part 23 . Point 233 is electrically connected. The positive electrode 241 and the negative electrode 242 are respectively disposed on opposite sides of the two annular portions 23 along the same diameter direction D. Both the first connecting portion 251 and the second connecting portion 252 are rectangular.

Specifically, in the first embodiment, the two annular portions 23 of the heating element 22 may be two identical annular portions 23, or two annular portions 23 of different sizes. In this embodiment, for example, The two ring parts 23 have the same size and are circular rings or elliptical rings, which are respectively the first ring part 235 and the second ring part 236 . In other embodiments, the size of the two annular portions 23 of the heating element 22 can be set according to needs, which is not limited in this application. In this embodiment, the first annular portion 235 and the second annular portion 236 are arranged side by side and on the same horizontal line. Wherein, the first connection point 233 of the first ring portion 235 is connected to the first connection portion 251, and the first connection portion 251 is connected to the positive electrode 241, and the second connection point 234 of the first ring portion 235 is connected to the second connection point 236 of the second ring portion 236. The first connection point 233 is connected, the second connection point 234 of the second ring portion 236 is connected to the second connection portion 252 , and the second connection portion 252 is connected to the negative electrode 242 .

In this embodiment, the outer diameter of the annular portion 23 is R1, the inner diameter of the annular portion 23 is R2, and R1=2R2. The widths of the first connecting portion 251 and the second connecting portion 252 perpendicular to the same diameter direction D are both L1, and L1=R1.

Specifically, R1=2R2, that is, R1-R2=ΔR, and ΔR=R2. The width of the first connection part 251 and the second connection part 252 perpendicular to the same diameter direction D is L1, L1=R1, that is, L1=2*ΔR=2*(R1-R2), so as to ensure that the current of the L1 line is at the same time It can be used in the parallel circuit of the first annular part 235 and the second annular part 236.

The outer circle of one annular portion 23 of the two annular portions 23 is tangent to the inner circle of the other annular portion 23 .

Specifically, that is, the outer circle of the first annular portion 235 is tangent to the inner circle of the second annular portion 236, and the outer circle of the second annular portion 236 is tangent to the inner circle of the first annular portion 235, that is to say The shortest distance L2=R1-R2=△R at the junction of the first annular portion 235 and the second annular portion 236, L2 acts as a bridge, under normal circumstances, the position of L2 does not have current flow, but when the first annular When one of the portion 235 or the second annular portion 236 fails, the connection where L2 is located can function as a bridge. In this embodiment, a better set of parameters is: L1=1.2mm, ΔR=R2=L2=0.6mm, R1=1.2mm. In other embodiments, the specific parameters of R1, R2, L1, and L2 can be set as required, which is not limited in this application.

Please refer to FIG. 6 and FIG. 7 , FIG. 6 is a schematic structural diagram of the heating element in the second embodiment provided by the present application, and FIG. 7 is a schematic structural diagram of the heating element in the third embodiment provided in the present application.

In the second embodiment and the third embodiment, the number of the annular portion 23 is one, and both the first connecting portion 251 and the second connecting portion 252 are curved heating elements. The middle part of the first connection part 251 is electrically connected to the first connection point 233 , and the two ends are respectively electrically connected to the positive electrode 241 . The middle part of the second connection part 252 is electrically connected to the second connection point 234 , and the two ends are respectively electrically connected to the negative electrode 242 .

Specifically, the first connecting portion 251 and the second connecting portion 252 are two identical semicircular arcs, which are respectively the first semicircular arc 253 and the second semicircular arc 254 . Both the first semi-circular arc 253 and the second semi-circular arc 254 include a first end 2531 , a second end 2532 and a middle portion 2533 . The two ends of the first connection part 251 are respectively in direct contact with the two ends of the positive electrode 241 perpendicular to the same diameter direction D, and the two ends of the second connection part 252 are respectively in direct contact with the negative electrode 242 along the direction perpendicular to the same diameter. Both ends in the same diameter direction D are in direct contact. Specifically, the first end 2531 and the second end 2532 of the first semi-circular arc 253 respectively contact and connect the two ends of the positive electrode 241 . The first end 2531 of the first semicircular arc 253 is connected to one end of the positive electrode 241 perpendicular to the same diameter direction D, and the second end 2532 of the first semicircular arc 253 is connected to the other end of the positive electrode 241 perpendicular to the same diameter direction D. The first end 2531 and the second end 2532 of the second semi-circular arc 254 respectively contact and connect the two ends of the negative electrode 242 . Specifically, the first end 2531 of the second semicircular arc 254 is connected to one end of the negative electrode 242 perpendicular to the same diameter direction D, and the second end 2532 of the second semicircular arc 254 is connected to the end of the negative electrode 242 perpendicular to the same diameter direction D. another side. The outer diameters of the first semicircular arc 253 and the second semicircular arc 254 are the same, and the outer diameters are equal to the lengths of the positive electrode 241 and the negative electrode 242 perpendicular to the same diameter.

The openings of the first semicircle 253 and the second semicircle 254 are arranged in opposite directions. Specifically, the middle portion 2533 of the first semicircle 253 is connected to the first connection point 233 of the annular portion 23 , and the middle portion 2533 of the second semicircle 254 is connected to the second connection point 234 of the ring portion 23 . Specifically, the inner diameter and outer diameter of the first semicircle arc 253 and the second semicircle arc 254 are the same as the inner diameter and outer diameter of the annular portion 23 . The outer diameters of the first semicircle arc 253 and the second semicircle arc 254 are all tangent to the inner diameter of the annular portion 23, and the inner diameters of the first semicircle arc 253 and the second semicircle arc 254 are all tangent to the outer diameter of the annular portion 23. Cut, the first semicircle 253 and the second semicircle 254 are respectively arranged on both sides of the annular part 23 , and their central points are both on the extension line of the same diameter direction D of the annular part 23 .

In this embodiment, the size, radian, length, etc. of the semicircular arc can be set as required, as long as the connection between the semicircular arc and the annular part 23, the positive electrode 241 and the negative electrode 242 can be realized. No restrictions.

As shown in FIG. 7 , in the third embodiment, the annular portion 23 further includes a strip portion 237 connecting two connection points on the annular portion 23 , and the strip portion 237 is disposed inside the annular portion 23 . A first end of the strip portion 237 is connected to the first connection point 233 , and a second end of the strip portion 237 is connected to the second connection point 234 . The strip portion 237, the first curve segment 231 and the second curve segment 232 are arranged in parallel between the first connection point 233 and the second connection point 234, and the strip portion 237, the first curve segment 231 and the second curve segment 232 is arranged in parallel between the positive electrode 241 and the negative electrode 242 .

Specifically, the strip portion 237 is arranged along the diameter direction of the ring portion 23 . In the third embodiment, the bar-shaped portion 237 is straight, and is in the same diameter direction D as the first connection point 233 and the second connection point 234 .

Please refer to FIG. 8 . FIG. 8 is a schematic structural diagram of the heating element in the fourth embodiment provided by the present application.

In the fourth embodiment, the number of the ring portion 23 is one, the first connecting portion 251 and the second connecting portion 252 are both rectangular, and the strip portion 237 is curved. The structure of the electrode 24 is the same as that in the previous embodiments, and will not be repeated here.

Specifically, the curved shape of the strip portion 237 may be an arc, a wave, a random curve, or the like. In this embodiment, the bar-shaped portion 237 is two semicircular arcs facing opposite, and the junction of the two semicircular arcs facing opposite is the center of the ring part 23 , one of which is far away from the ring part 23 One end of the center of the circle is connected to one side of the inner circle of the annular portion 23 , and one end of the other semicircle away from the center of the circle of the annular portion 23 is connected to the opposite side of the inner circle of the annular portion 23 . The connection point between the semicircle arcs of the two strip parts 237 and the inner circle of the ring part 23 is on the diameter of the ring part 23 , or on the extension line of the same diameter direction D of the ring part 23 . The first connection point 233 of the ring portion 23 is connected to the first connection portion 251 , the first connection portion 251 is connected to the positive electrode 241 , the second connection point 234 is connected to the second connection portion 252 , and the second connection portion 252 is connected to the negative electrode 242 . Both the first connecting portion 251 and the second connecting portion 252 are distributed along the same diameter direction D as the strip portion 237 . In this embodiment, the lengths of the first connecting portion 251 and the second connecting portion 252 in the same diameter direction D and the heights perpendicular to the same diameter direction D are not limited, and can be set as required. In other embodiments, the strip portion 237 may also have other shapes, which are not limited in this application.

In addition, in other embodiments, the number of the annular portion 23 can be set in multiples according to specific needs, which is not limited in the present application.

In order to verify the technical effect of the embodiment provided by this application, the inventor compared the S-shaped heating film in the prior art and the present application from the perspectives of atomization amount, mouthfeel, image of heating element 22 after 250 puffs of suction, and temperature field comparison. The heating element 22 in the embodiment is compared, please refer to Table 1.

Table 1

It can be seen from the above table 1 that the heating element 22 in Examples 1 to 4 of the present application is significantly better than the S-shaped heating film of the existing product in terms of temperature field performance and atomization performance. Especially in electronic atomization device products, the service life is much longer than existing products. For the sweet atomized base, the first embodiment can suck more than 1000 puffs, and the second embodiment can suck more than 800 puffs, which is a great improvement compared to about 300 puffs in the prior art.

At present, the best embodiment is Embodiment 1, and the scheme disclosed in this embodiment has been introduced into comparative tests in 8 different series of atomized base products. The advantages of less, large amount of smoke. At the same time, the technical solution of the present application greatly reduces the thermal stress of the heating element 22, thereby reducing the risk of cracking caused by the stress, and improving the safety of the product.

The atomizing core of the present application includes a conductive liquid and a heating element. The conductive liquid has a liquid-absorbing surface and an atomizing surface oppositely arranged to guide the aerosol generating substrate from the liquid-absorbing surface to the atomizing surface; the heating element is arranged on the atomizing surface. On the surface, it is used to heat and atomize the aerosol generating substrate to generate aerosol. Wherein, the heating element includes a curved heating element. On the one hand, this application greatly reduces the thermal field superposition area of the product, and the design layout of the parallel circuit makes the temperature field distribution of the heating element more uniform. On the other hand, the heating film circuit is basically in a curved form, which greatly reduces the Thermal stress reduces the risk of cracking caused by stress, so that the life of this application can be increased by more than two times during use, and the taste, smoke concentration and throat hit feeling are all improved.

The above is only the implementation of the application, and does not limit the patent scope of the application. Any equivalent structure or equivalent process conversion made by using the specification and drawings of the application, or directly or indirectly used in other related technologies fields, are all included in the scope of patent protection of this application in the same way.

Claims

An atomizing core, including:

a guiding liquid having a liquid-absorbing surface and an atomizing surface oppositely arranged for guiding the aerosol-generating substrate from the liquid-absorbing surface to the atomizing surface;

a heating element, arranged on the atomizing surface, for heating and atomizing the aerosol-generating substrate to generate an aerosol;

Wherein, the heating body includes at least two sections of curved heating bodies connected in parallel.
The atomizing core according to claim 1, wherein the heating element further comprises a positive electrode and a negative electrode electrically connected to the curved heating element.
The atomizing core according to claim 1, wherein at least two sections of the curved heating element are connected in parallel to form a closed annular portion;

At least two connection points of the annular portion are respectively electrically connected to the positive electrode and the negative electrode.
The atomizing core according to claim 3, wherein the interior of the annular portion further includes a strip portion connecting the two connection points on the annular portion.
The atomizing core according to claim 4, wherein the strip-shaped portion is curved or straight.
The atomizing core according to claim 3, wherein the heating element comprises at least two annular parts connected in series; the second connection point of one of the two annular parts is connected to the other The first connection point of the annular portion is electrically connected; the positive electrode and the negative electrode are respectively arranged on opposite sides of the two annular portions along the same diameter direction.
The atomizing core according to claim 4, wherein a connecting portion is further included between the electrode and the connecting point;

The connection part includes parallel curved heating elements and/or straight heating elements.
The atomizing core according to claim 6, wherein the annular portion is a circular ring or an elliptical ring.
The atomizing core according to claim 6, wherein the outer diameter of the annular portion is R1, the inner diameter of the annular portion is R2, and R1=2R2; wherein, the first connecting portion and the second connecting portion are vertical The widths in the same diameter direction are all L1, and L1=R1; the outer circle of one of the two ring parts is tangent to the inner circle of the other ring part.
The atomizing core according to claim 9, wherein both the first connecting portion and the second connecting portion are curved; the middle portion of the first connecting portion is electrically connected to the first connecting point, The two ends are respectively electrically connected to the positive electrode; the middle part of the second connection part is electrically connected to the second connection point, and the two ends are respectively electrically connected to the negative electrode.
The atomizing core according to claim 9, wherein both the first connecting portion and the second connecting portion are semicircular arcs, and the two ends of the first connecting portion are respectively connected to the positive electrode. The two ends along the direction perpendicular to the same diameter are in direct contact with each other, and the two ends of the second connecting portion are respectively in direct contact with the two ends of the negative electrode along the direction perpendicular to the same diameter.
The atomizing core according to claim 1, wherein the heating element is a metal layer formed by thick film printing.
A nebulizer, comprising:

The shell has an accommodating cavity;

The atomizing core is arranged in the accommodating cavity and cooperates with the housing to form a liquid storage cavity; the atomizing core is used to heat and atomize the aerosol generating substrate from the liquid storage cavity when energized to form an aerosol; wherein, the atomizing core is the atomizing core according to claim 1.
An electronic atomization device, including:

A nebulizer; wherein, the nebulizer is the nebulizer according to claim 13;

The power supply component is electrically connected with the atomizer and used to supply power to the atomizer.