WO2024259809A1 - Atomization core and electronic atomizer - Google Patents

Abstract

The present application provides an atomization core and an electronic atomizer. The atomization core comprises an e-liquid storage part (100) and an e-liquid guide part (200); the e-liquid storage part (100) is provided with e-liquid storage holes (110) used for storing an atomization medium; the e-liquid guide part (200) is connected to the e-liquid storage part (100), the e-liquid guide part (200) is provided with e-liquid guide holes (210), and some of the e-liquid guide holes (210) are communicated with some of the e-liquid storage holes (110) so as to guide the atomization matrix in the e-liquid storage part (100) into the e-liquid guide part (200); and the hole diameter of each e-liquid guide hole (210) is less than the hole diameter of each e-liquid storage hole (110), such that the pore capillary force of the e-liquid guide part (200) is greater than the pore capillary force of the e-liquid storage part (100), and the atomization matrix in the e-liquid storage holes (110) can be guided into the e-liquid guide part (200) in the continuous use process until the atomization matrix in the e-liquid storage part (100) is basically consumed. Compared with the combination of e-liquid storage cotton and e-liquid guide cotton in the prior art, the present application avoids unsmooth e-liquid guiding caused by a large fitting gap between assembly surfaces in the assembly process. In addition, in the present application, there are fewer structural components, assembly is simple, and automation is easy to achieve.

Description

Atomizer core and electronic atomizer

This application claims priority to Chinese patent application No. 202321583947.0, filed on June 20, 2023, with invention name “Atomizer Core and Electronic Atomizer”, which is incorporated herein by reference in its entirety.

[Technical field]

The present application relates to the field of manufacturing and production of electronic atomization equipment, and specifically to atomization cores and electronic atomizers.

[Background technology]

Oil storage cotton or oil guide cotton has been widely used in electronic atomizers. In existing electronic atomizers, the atomized matrix is usually guided from the oil storage cotton to the oil guide cotton, and then from the oil guide cotton to the heating device for atomization. Having more parts means more assembly surfaces. If the matching gaps of these assembly surfaces are large, it will lead to poor oil conduction, which will cause the heating device to burn dry, produce burnt smell or harmful substances.

[Summary of the invention]

The purpose of the present application is to provide an atomizer core and an electronic atomizer.

The present application provides an atomizer core, comprising: an oil storage portion, the oil storage portion being provided with an oil storage hole; and an oil guide portion, the oil guide portion being connected to the oil storage portion, the oil guide portion being provided with an oil guide hole, at least part of the oil guide hole being communicated with at least part of the oil storage hole, the pore diameter of the oil guide hole being smaller than the pore diameter of the oil storage hole so that the pore capillary force of the oil guide portion is greater than the pore capillary force of the oil storage portion, so as to guide the atomized matrix in the oil storage hole to the oil guide portion.

In an exemplary embodiment of the present application, the pore size of the oil storage hole is between 10um and 200um, and the pore size of the oil guide hole is between 1um and 100um.

In an exemplary embodiment of the present application, the oil storage holes include first oil storage holes arranged at intervals along a first direction on a reference plane and second oil storage holes arranged at intervals along a second direction, the first direction and the second direction are perpendicular to each other, and at least one of the first oil storage holes is intersected and connected with at least one of the second oil storage holes.

In an exemplary embodiment of the present application, the oil guide holes include first oil guide holes spaced apart along the first direction on the reference plane and second oil guide holes spaced apart along the second direction, and at least one of the first oil guide holes is intersected and connected with at least one of the second oil guide holes.

In an exemplary embodiment of the present application, in the first direction, part of the first oil storage holes and part of the first oil guide holes are connected; and the height of the oil storage portion is greater than the height of the oil guide portion.

In an exemplary embodiment of the present application, the oil guiding portion and the oil storage portion are an integral structure.

In an exemplary embodiment of the present application, the atomizer core is a ceramic atomizer core, and the atomizer core is a cylinder, and the diameter of the end surface of the oil storage portion away from the oil guide portion gradually decreases toward the diameter of the end surface of the oil guide portion away from the oil storage portion.

In an exemplary embodiment of the present application, the atomizer core further includes a heating element, and the heating element is disposed on a side of the oil guide portion away from the oil storage portion.

In an exemplary embodiment of the present application, the atomizer core also includes an air passage, which passes through the oil storage portion and the oil guide portion at the same time. A pipe is provided in the air passage, and the outer wall of the pipe abuts against the side wall of the air passage to prevent the atomized matrix from flowing into the middle of the air passage.

The present application also provides an electronic atomization device, comprising the above-mentioned atomization core.

The atomizer core and the electronic atomizer of the present application have the following beneficial effects: the oil storage part is provided with an oil storage hole for storing the atomized medium; the oil guide part is connected to the oil storage part, the oil guide part is provided with an oil guide hole, some of the oil guide holes are connected with some of the oil storage holes to guide the atomized matrix in the oil storage part into the oil guide part, the pore size of the oil guide hole is smaller than the pore size of the oil storage hole so that the pore capillary force of the oil guide part is greater than the pore capillary force of the oil storage part, and the atomized matrix in the oil storage hole can be guided to the oil guide part during continuous use until the atomized matrix in the oil storage part is basically consumed, which is different from the oil storage cotton and Compared with the combination of the oil-conducting cotton, the oil-conducting cotton can avoid the poor oil-conducting caused by the large matching gap of the assembly surface during the assembly process. In addition, the atomizer core structure of the present application has fewer components, simple assembly, and easy automation.

Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application.

【Brief Description of the Drawings】

The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG1 is a schematic diagram of the structure of the atomizer core in an embodiment of the utility model;

FIG2 is a front view of the atomizer core in an embodiment of the utility model;

FIG3 is a cross-sectional schematic diagram of an atomizer core in an embodiment of the utility model;

FIG. 4 is a top view of the atomizer core in the embodiment of the utility model.

Description of reference numerals:
100, oil storage part; 110, oil storage hole; 111, first oil storage hole; 112, second oil storage hole; 200, oil guide part; 210, oil guide hole; 211,
First oil guide hole; 212, second oil guide hole; 300, heating element; 310, bending part; 400, airway; 410, pipeline.

[Specific implementation method]

Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

It should be noted that the "multiple" mentioned in this article refers to two or more. "And/or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects before and after are in an "or" relationship.

The embodiment of the present application provides an electronic atomizer, which is a device that heats an atomization matrix to obtain an aerosol, and the aerosol produced by the electronic atomizer is used for inhalation by the user. The electronic atomizer includes a shell, an atomization core, and a main airway formed in the shell. The air inlet of the main airway is arranged at the bottom of the shell, and the air outlet of the main airway is the suction port of the suction nozzle. The atomization matrix is stored in the atomization core. When it is working, the atomization core heats up the atomization matrix to form an aerosol, which flows out of the suction nozzle for the user to inhale. The user inhales to provide suction to the electronic atomizer so that the aerosol flows into the user's mouth.

In some embodiments, the atomizer core includes an oil storage portion 100 and an oil guide portion 200. The oil storage portion 100 is used to store the atomized matrix. The oil guide portion 200 receives the atomized matrix in the oil storage portion 100 and guides it to the heating element 300 for heating to form an aerosol. The oil storage portion 100 is provided with an oil storage hole 110. The oil guide portion 200 is connected to the oil storage portion 100. The oil guide portion 200 is provided with an oil guide hole 210. At least part of the oil guide hole 210 is connected to at least part of the oil storage hole 110. The pore diameter of the oil guide hole 210 is smaller than the pore diameter of the oil storage hole 110 so that the pore capillary force of the oil guide portion 200 is greater than the pore capillary force of the oil storage portion 100. Due to the change of pore capillary force, the atomized matrix in the oil storage hole 110 can be guided to the oil guide part 200 during continuous use until the atomized matrix in the oil storage part 100 is basically consumed. Compared with the combination of oil storage cotton and oil guide cotton in the prior art, the poor guide caused by the large matching gap of the assembly surface during the assembly process is avoided. In addition, the atomizer core structure of the present application has fewer components, simple assembly, and easy automation.

Further, capillary phenomenon is a phenomenon that occurs in some capillaries whose linear dimensions are small enough to be compared with the radius of curvature of the liquid meniscus. The entire liquid surface in the capillary will become curved, and the interaction between liquid-solid molecules can be extended to the entire liquid, wherein the force generated by the capillary phenomenon is called capillary force. Since the pore size in the oil storage portion 100 is larger than the pore size of the oil guide portion 200, the capillary force of the oil guide hole 210 is greater than the capillary force of the oil storage hole 110, and the atomized matrix will flow from the end with small capillary force to the end with large capillary force. In the process of the atomized matrix in the oil guide portion 200 being atomized and consumed during use, the atomized matrix in the oil storage portion 100 is introduced into the oil guide portion 200 by capillary force until the atomized matrix is basically consumed.

In some embodiments, the communication mode between the oil storage holes 110 and the oil guide holes 210 includes but is not limited to partial communication between the oil storage holes 110 and partial communication between the oil guide holes 210, communication between all the oil storage holes 110 and partial communication between the oil guide holes 210, communication between some of the oil storage holes 110 and all the oil guide holes 210, communication between all the oil storage holes 110 and all the oil guide holes 210, etc., which can be set according to the characteristics such as the fluidity of the atomization matrix and the atomization speed of the atomization matrix, so that the oil guide part 200 can receive sufficient atomization matrix for atomization.

In some embodiments, the atomizer core is in the shape of a flat sheet (i.e., a cube or a cuboid), a cylinder, a cone, etc. Its shape can meet the assembly requirements.

In some embodiments, the atomizer core is a ceramic atomizer core, wherein the oil storage portion 100 and the oil guide portion 200 are both made of ceramic material, which has the advantages of good stability, high thermal conductivity, and low corrosion resistance, etc. The ceramic material includes but is not limited to aluminum oxide, silicon oxide, magnesium oxide, calcium oxide, mullite, cordierite, etc.

In the prior art, oil storage cotton or oil guide cotton has been widely used in electronic atomizers, and the material of the oil storage cotton is made of polymers such as polyurethane, polypropylene, polyethylene, and polyethylene terephthalate. The oil storage cotton includes one of the polymers or a composite material of several polymers. The material of the oil guide cotton is non-woven fabric, linen cotton, wood pulp cotton, etc. The oil storage cotton and oil guide cotton made by the above method have the following disadvantages: First, the polymer is mostly made of monomer raw materials through polymerization reaction, and the monomer raw materials that are not completely reacted will remain in the polymer, and the polymerization reaction will also introduce surfactants, antioxidants and other additives, which will also partially remain in the polymer. When the oil storage cotton is heated, it will decompose and produce substances that are harmful to the human body; second, some polymer materials may introduce plasticizers during the manufacturing process, which is harmful to human health; third, the heat resistance of the polymer and the oil guide cotton material itself is general, and under the action of long-term heating and atomization matrix components, there is a possibility of decomposition and production of harmful substances. In general, polymer oil storage cotton and oil guide cotton have certain health hazards.

Compared with the prior art, the atomizer core is a ceramic atomizer core, which avoids the health hazards caused by the oil storage cotton and oil guide cotton in the prior art.

In some embodiments, the pore size of the oil storage hole 110 is between 10um and 200um, and the pore size of the oil guide hole 210 is between 1um and 100um. The pore sizes of the oil storage part 100 and the oil guide part 200 can be adjusted according to the viscosity of the e-liquid to ensure that the atomized matrix will not leak out of the oil storage part 100 under the corresponding pore size. And the porosity of the oil storage part 100 is greater than 60% to ensure that enough e-liquid can be stored. The porosity of the oil guide part 200 needs to be matched with its pore size to make the capillary force greater than the capillary force of the oil storage part 100.

For example, the pore size of the oil storage hole 110 is 50um, the pore size of the oil guide hole 210 is 5um, and the porosity of the oil storage part 100 and the oil guide part 200 are both 60%. Then, under the action of capillary force, the oil storage part 100 and the oil guide part 200 can enable the atomized matrix in the oil storage part 100 to be introduced into the oil guide part 200, thereby avoiding the waste of the atomized matrix.

In some embodiments, the preparation method of the atomizer core can adopt a tape casting lamination method, and the atomizer core green body is prepared by adjusting the raw material particle size and the pore-forming agent particle size of the lamination slurry, that is, the oil storage part 100 uses large-particle raw materials and large-particle pore-forming agents, and the oil guide part 200 uses small-particle raw materials and small-particle pore-forming agents, and then the atomizer core green body is cut into shape and sintered into shape.

In another embodiment, the preparation method of the atomizer core can also adopt a dry pressing method, by adjusting the pressure of pressing the oil storage part 100 and the oil guide part 200, the upper and lower layers of the green body are made inconsistent, and different pore sizes and porosities are formed after sintering.

Specifically, the oil storage holes 110 include first oil storage holes 111 spaced apart along a first direction on a reference plane and second oil storage holes 112 spaced apart along a second direction, the first direction and the second direction are perpendicular to each other, and at least one first oil storage hole 111 intersects and communicates with at least one second oil storage hole 112. The oil guide holes 210 include first oil guide holes 211 spaced apart along a first direction on a reference plane and second oil guide holes 212 spaced apart along a second direction. The second oil guide hole 212 is provided, and at least one first oil guide hole 211 is intersected and communicated with at least one second oil guide hole 212. Due to the low permeability of the ceramic material, the intersecting first oil storage hole 111 and the second oil storage hole 112, the first oil guide hole 211 and the second oil guide hole 212 can allow the atomized matrix stored therein to circulate.

Further, the reference plane is a plane cut along the center line of the atomizer core. For example, the atomizer core is a cone-shaped column, wherein the cone-shaped column is a type of cylindrical shape, that is, on the basis of the cylindrical shape, the diameter of the end face of the oil storage portion 100 away from the oil guide portion 200 gradually decreases toward the end face of the oil guide portion 200 away from the oil storage portion 100. The axis of the cone column is the center line of the cone column, and the plane cut along the axis is the reference plane. On the reference plane, the first direction is a direction parallel to the axis direction, and the second direction is a direction perpendicular to the axis direction.

In some embodiments, in the first direction, part of the first oil storage holes 111 and part of the first oil guide holes 211 are connected to increase the fluidity of the atomized matrix in the oil storage portion 100 to the oil guide portion 200 .

In some embodiments, in the first direction, the interval between the first oil storage holes 111 is smaller than the interval between the first oil guide holes 211; in the second direction, the interval between the second oil storage holes 112 is smaller than the interval between the second oil guide holes 212. When the pore size of the oil storage holes 110 is larger than the pore size of the oil guide holes 210, the oil storage portion 100 and the oil guide portion 200 have the same porosity.

In some embodiments, the height of the oil storage portion 100 is greater than the height of the oil guide portion 200 , so that the oil storage portion 100 can store more atomized substrate to be adequately supplied to the oil guide portion 200 .

In some embodiments, the atomizer core also includes an airway 400, which passes through the oil storage part 100 and the oil guide part 200 at the same time. A pipe 410 is provided in the airway 400. After the heating element 300 generates heat to atomize the atomized matrix in the oil guide part 200 to form an aerosol, the aerosol flows from the pipe 410 from one side of the oil guide part 200 to the oil storage part 100, and then flows to the inhalation port. The outer wall of the pipe 410 and the side wall of the airway 400 are pressed against each other to prevent the atomized matrix from flowing into the middle of the airway. The pipe 410 isolates the main airway from the atomized matrix, and can prevent the atomized matrix in the oil guide hole 210 and the oil storage hole 110 from entering the middle of the airway 400, thereby preventing the user from inhaling the atomized matrix.

In some embodiments, the material of the pipe 410 may include but is not limited to glass fiber, metal, etc., preferably glass fiber, which has the advantages of good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength.

In some embodiments, the atomizer core further includes a heating element 300 , which is disposed on a side of the oil guide portion 200 away from the oil storage portion 100 , and atomizes the atomization matrix conducted from the oil guide portion 200 to form an aerosol.

Furthermore, the heating element 300 includes thick film printing and steel heating wire, etc., wherein the steel heating wire needs to be embedded in the green body of the atomizer core during production. The material of the steel heating wire includes but is not limited to nickel-chromium alloy, iron-chromium-aluminum alloy, stainless steel, etc., and the resistance value is between 0.5Ω and 3Ω.

In some embodiments, the heating element is a curved steel sheet heating wire, and the two sides of the heating wire are symmetrically arranged at one end of the airway 400. The heating wire also includes a curved portion arranged between the two sides, and the curved portion can avoid the airway 400, which is conducive to heating the atomized matrix to form an aerosol. The aerosol flows out from the airway 400.

In the present application, the atomizer core includes an oil storage part 100, an oil guide part 200, a heating element 300 and an airway 400. The oil storage part 100 is used to store the atomized matrix. The oil guide part 200 is connected to the oil storage part 100. The oil guide part 200 is provided with an oil guide hole 210. Part of the oil guide hole 210 is connected with part of the oil storage hole 110. The pore size of the oil guide hole 210 is smaller than the pore size of the oil storage hole 110 so that the pore capillary force of the oil guide part 200 is greater than the pore capillary force of the oil storage part 100, so as to guide the atomized matrix in the oil storage hole 110 to the oil guide part 200. The atomizer core is a ceramic atomizer core to avoid the health hazards caused by the oil storage cotton and the oil guide cotton in the prior art. The heating element 300 is arranged on the side of the oil guide part 200 away from the oil storage part 100. The atomized matrix in the atomized oil guide part 200 is used to form an aerosol, and the airway 400 passes through the oil storage part 100 and the oil guide part 200 at the same time. A pipe 410 is provided in the airway 400. After the heating element 300 generates heat to atomize the atomized matrix in the oil guide part 200 to form an aerosol, the aerosol flows from the pipe 410 from one side of the oil guide part 200 to the oil storage part 100, and then flows to the inhalation port. Such a design structure is simple, convenient for automated assembly, and avoids the poor guidance caused by the large matching gap of the assembly surface in the existing assembly process.

In this application, unless otherwise clearly specified or limited, the terms "disposed (provided with)", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection. The two elements may be directly connected, or indirectly connected through an intermediate medium, and may be internally connected or interactively connected between the two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In the description of this specification, the description of reference terms such as "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims (10)

An atomizer core, applied to an electronic atomizer, characterized by comprising: An oil storage part, wherein the oil storage part is provided with an oil storage hole; An oil guide portion, the oil guide portion is connected to the oil storage portion, the oil guide portion is provided with oil guide holes, at least part of the oil guide holes are connected to at least part of the oil storage holes, the pore size of the oil guide holes is smaller than the pore size of the oil storage holes so that the pore capillary force of the oil guide portion is greater than the pore capillary force of the oil storage portion, so as to guide the atomized matrix in the oil storage holes to the oil guide portion. The atomizer core according to claim 1, characterized in that the diameter of the oil storage hole is between 10um and 200um, and the diameter of the oil guide hole is between 1um and 100um. The atomizer core according to claim 1, characterized in that the oil storage holes include first oil storage holes spaced apart along a first direction on a reference plane and second oil storage holes spaced apart along a second direction, the first direction and the second direction are perpendicular to each other, and at least one of the first oil storage holes intersects and communicates with at least one of the second oil storage holes. The atomizer core according to claim 3, characterized in that the oil guide holes include first oil guide holes arranged at intervals along the first direction on the reference plane and second oil guide holes arranged at intervals along the second direction, and at least one of the first oil guide holes is intersected and connected with at least one of the second oil guide holes. The atomizer core according to claim 4, characterized in that, in the first direction, part of the first oil storage holes and part of the first oil guide holes are connected; and the height of the oil storage portion is greater than the height of the oil guide portion. The atomizer core according to claim 1, characterized in that the oil storage portion and the oil guide portion are an integrated structure. The atomizer core according to any one of claims 1 to 6, characterized in that the atomizer core is a ceramic atomizer core, and the atomizer core is a cylinder, and the diameter of the end surface of the oil storage portion away from the oil guide portion gradually decreases toward the diameter of the end surface of the oil guide portion away from the oil storage portion. The atomizer core according to any one of claims 1 to 6, characterized in that the atomizer core further comprises a heating element, and the heating element is arranged on a side of the oil guide portion away from the oil storage portion. The atomizer core according to any one of claims 1 to 6 is characterized in that the atomizer core further comprises an air passage, the air passage passes through the oil storage portion and the oil guide portion at the same time, a pipe is provided in the air passage, the outer side wall of the pipe abuts against the side wall of the air passage to prevent the atomized matrix from flowing into the middle of the air passage. An electronic atomizer, characterized by comprising the atomization core according to any one of claims 1 to 9.