Atomizing Core, Atomizer, and Electronic Atomization Device

This application is a continuation of International Patent Application No. PCT/CN2023/124981, filed on Oct. 17, 2023, which claims priority to Chinese Patent Application No. 202211618213.1, filed on Dec. 15, 2022. The entire disclosure of both applications is hereby incorporated by reference herein.

This application relates to the field of atomization technologies, and in particular, to an atomizing core, an atomizer, and an electronic atomization device.

An electronic atomization device is a device that can heat an aerosol-forming medium to form an aerosol, an atomizing core of which generally includes a ceramic substrate and a heating member arranged on an atomization surface of the ceramic substrate. After being powered up, the heating member heats the aerosol-forming medium near the atomization surface.

The atomization surface generally includes a first atomization region in which the heating member is located and a second atomization region adjacent to the first atomization region. The first atomization region has the highest temperature and the strongest explosive power. The aerosol-forming medium above the heating member has a high degree of oversaturation, enabling maximized proportional atomization. However, the second atomization region has a low atomization temperature, and a substance with a low boiling point may be atomized first. Therefore, non-proportional atomization inevitably exists. In addition, as a quantity of puffs increases, there are fewer low-boiling-point substances in the aerosol-forming medium. This may cause a problem of poor consistency between tastes before and after inhalation.

In an embodiment, the present invention provides an atomizing core, comprising: a substrate comprising an atomization surface; a heating member arranged on the atomization surface, a region of an orthographic projection of the heating member on the atomization surface forming a first atomization region, the atomization surface comprising a second atomization region arranged around a periphery of the first atomization region; and a blocking member arranged in the second atomization region and configured to block an aerosol-forming medium from being atomized in the second atomization region.

In an embodiment, the present invention provides an atomizing core, an atomizer, and an electronic atomization device that can alleviate poor consistency between tastes before and after inhalation caused by non-proportional atomization in a porous substrate region.

In an embodiment, the present invention provides an atomizing core, including: a substrate including an atomization surface;

In an embodiment, the heating member is a porous heating member, the blocking member is a porous blocking member, and the porosity of the heating member is greater than the porosity of the blocking member.

In an embodiment, the porosity of the blocking member is less than 20%, and the porosity of the heating member ranges from 20% to 70%. In an embodiment, the heating member and the blocking member are integrally formed.

In an embodiment, the second atomization region includes a first boundary, the first boundary being not adjacent to the first atomization region, and the orthographic projection of the blocking member on the second atomization region forms a projection region, the first boundary and the projection region being spaced apart from each other.

In an embodiment, the blocking member and the heating member are spaced apart from each other.

In an embodiment, the heating member includes a heating element having a curved shape, the blocking member is arranged in a bend of the heating element, and the blocking member is spaced apart from the heating element along a peripheral direction thereof.

In a second aspect, an atomizer is provided, including the atomizing core in any one of the foregoing embodiments.

In an embodiment, the substrate further includes a liquid absorbing surface, and the atomizer further includes a sealing member, the sealing member covering surfaces of the substrate other than the liquid absorbing surface and the atomization surface.

In a third aspect, an electronic atomization device is further provided, including the foregoing atomizer.

According to the atomizing core, the atomizer, and the electronic atomization device described above, the blocking member is arranged in the second atomization region, i.e., the region at a relatively low temperature during the atomization, so that the flow of the aerosol-forming medium to the region is blocked, and the atomization region is limited to the first atomization region in which the heating member is located. Therefore, atomization in the second atomization region at a low temperature can be thoroughly avoided. In addition, since the first atomization region in which the heating member is located has the highest temperature and the strongest explosive power, a high degree of oversaturation can be given during the atomization of the aerosol-forming medium, so that proportional atomization is maximized, thereby achieving good consistency between tastes before and after inhalation and enabling maximized restoration of the aroma of the aerosol-forming medium.

To make the foregoing objectives, features, and advantages of this application more comprehensible, specific implementations of this application are described in detail below with reference to the accompanying drawings. In the following description, many specific details are described for thorough understanding of this application. However, this application can be implemented in many other manners different from those described herein. A person skilled in the art may make similar improvements without departing from the connotation of this application. Therefore, this application is not limited to specific embodiments disclosed below.

Unless otherwise defined, meanings of all technical and scientific terms used in this specification are the same as those usually understood by a person skilled in the art to which this application belongs. In this application, terms used in the specification of this application are merely intended to describe objectives of the specific embodiments, but are not intended to limit this application. The term “and/or” used herein includes any or all combinations of one or more associated listed items.

In the description of this application, it should be understood that orientation or position relationships indicated by the terms such as “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “anticlockwise”, “axial”, “radial”, and “circumferential” are based on the orientation or position relationships shown in the accompanying drawings, and are used only for ease of description of this application simplification of the description, rather than indicating or implying that the mentioned apparatus or component must have a particular orientation or must be constructed and operated in a particular orientation. Therefore, such terms should not be construed as limitations on this application.

In addition, terms “first” and “second” are used merely for the purpose of description, and shall not be construed as indicating or implying relative importance or implying a quantity of indicated technical features. Therefore, a feature restricted by “first” or “second” may explicitly indicate or implicitly include at least one of such features. In description of this application, “a plurality of” means at least two, such as two and three unless it is specifically defined otherwise.

In this application, unless otherwise explicitly specified or defined, the terms such as “mount”, “connect”, “connection”, and “fix” should be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; or the connection may be a mechanical connection or an electrical connection; or the connection may be a direct connection, an indirect connection through an intermediary, or internal communication between two elements or mutual action relationship between two elements, unless otherwise specified explicitly. A person of ordinary skill in the art may understand the specific meanings of the foregoing terms in this application according to specific situations.

In this application, unless otherwise explicitly specified or defined, the first feature being located “above” or “below” the second feature may be the first feature being in direct contact with the second feature, or the first feature being in indirect contact with the second feature through an intermediary. In addition, that the first feature is “above”, “over”, or “on” the second feature may indicate that the first feature is directly above or obliquely above the second feature, or may merely indicate that the horizontal position of the first feature is higher than that of the second feature. That the first feature is “below”, “under”, and “beneath” the second feature may be that the first feature is right below the second feature or at an inclined bottom of the second feature, or may merely indicate that the horizontal position of the first feature is lower than that of the second feature.

It should be noted that, when an element is referred to as “being fixed to” or “being arranged on” another element, the element may be directly on the another element, or an intermediate element may exist. When an element is considered to be “connected to” another element, the element may be directly connected to the another element, or an intermediate element may exist. The terms “vertical”, “horizontal”, “upper”, “lower”, “left”, “right”, and similar expressions used herein are only for purposes of illustration but not indicate a unique implementation.

The accompanying drawings are not drawn to 1:1 scale, and relative sizes of various elements in the accompanying drawings are drawn by way of examples only and not necessarily to true scale.

is a schematic structural diagram of an atomizing core according to an embodiment of this application.

Referring to the drawing, this application provides, in an embodiment, an atomizing core, including a substrate, a heating member, and a blocking member. After being powered on, the atomizing coreof this application heats and atomizes an aerosol-forming medium to form an aerosol. Specifically, the atomizing coreof this application may be applied to an electronic atomization device, and a liquid storage cavity in the electronic atomization device can provide the aerosol-forming medium to the atomizing corefor forming the aerosol by atomization.

The substratemay be a porous substrate, such as porous alumina ceramics, porous silicon oxide, porous cordierite, porous silicon carbide, porous glass, porous silicon nitride, porous mullite, composite porous ceramics, or composite porous glass, but is not limited thereto, which may alternatively be other materials suitable for molding and sintering. The porous substrate is formed by, but not limited to, tape casting, injection molding, and dry pressing.

Specifically, the porous substrate is in fluid communication with the liquid storage cavity and may adsorb the aerosol-forming medium from the liquid storage cavity by a capillary action and/or allow the aerosol-forming medium to enter the porous substrate under the action of gravity. The heating memberheats and atomizes the aerosol-forming medium in the porous substrate.

The substrateincludes an atomization surface. The heating memberis arranged on the atomization surface, which may specifically be arranged on the atomization surfaceof the substrate, or may be at least partially embedded in the substratefrom the atomization surface.

The substratefurther includes a liquid absorbing surface. The liquid absorbing surfacemay be arranged opposite to the atomization surface, or may not be arranged opposite to the atomization surface. In conclusion, the aerosol-forming medium in the liquid storage cavity can enter the substratefrom the liquid absorbing surface, so as to be guided to the atomization surfaceand be heated and atomized by the heating member.

The heating membermay be a heating sheet, a heating film, or a heating mesh, provided that the aerosol-forming medium can be heated and atomized.

Referring to, in this embodiment of this application, a region in which the orthographic projection of the heating memberon the atomization surfaceis located forms a first atomization region. It may be understood that, the orthographic projection of the heating memberon the atomization surfaceis the orthographic projection of the heating membertowards the heating memberalong a direction perpendicular to the atomization surface.

The atomization surfacefurther includes a second atomization regionarranged around the periphery of the first atomization region. A blocking memberis arranged in the second atomization regionand is configured to block the aerosol-forming medium from being atomized in the second atomization region.

Specifically, a region in which the orthographic projection of the blocking memberon the atomization surfaceis located may wholly coincide with or partially coincide with the second atomization region, which is not specifically limited.

The blocking membermay be a dense member, for example, quartz, glass, dense ceramic or silicon. When the blocking memberis made of glass, the glass may be one of common glass, quartz glass, borosilicate glass, and photosensitive lithium aluminosilicate glass. It should be noted that the blocking membermay also have a pore when being a dense member, and the porosity should be different from that of the porous substrate. Specifically, the porosity of the blocking membershould be smaller than that of the porous substrate.

According to the atomizing coreof this application, the blocking memberis arranged in the second atomization region, i.e., the region at a relatively low temperature during the atomization, so that the flow of the aerosol-forming medium to the region is blocked, and the atomization region is limited to the first atomization regionin which the heating memberis located. Therefore, atomization in the second atomization regionat a low temperature can be thoroughly avoided. In addition, since the first atomization regionin which the heating memberis located has the highest temperature and the strongest explosive power, a high degree of oversaturation can be given during the atomization of the aerosol-forming medium, so that proportional atomization is maximized, thereby achieving good consistency between tastes before and after inhalation and enabling maximized restoration of the aroma of the aerosol-forming medium.

In addition, since the aerosol-forming medium is prevented from being atomized in the second atomization region, energy required for the second atomization regionto heat the aerosol-forming medium is saved, thereby improving energy utilization during atomization of the heating member.

Referring toagain, in some embodiments, surfaces of the substrateother than the atomization surfaceare exposed to an outer side of the atomizing core.

Specifically, in an implementation of this application, one side surface of the substrateis the atomization surface, and the side surface opposite to the atomization surfaceis the liquid absorbing surface. In addition, the substratefurther includes a plurality of side surfacesarranged between the atomization surfaceand the liquid absorbing surface, and both the side surfaces and the liquid absorbing surfaceare exposed to the outer side of the atomizing core. Specifically, the substratemay be rectangular, cylindrical, V-shaped, or the like, which is not specifically limited.

It may be understood that, the blocking memberin this application does not extend to the surfaces of the substrateother than the atomization surface.

In this way, the stability of the structure of the heating membermay not be affected, and the process can be simplified.

In some embodiments, the heating memberis a porous heating member, the blocking memberis a porous blocking member, and the porosity of the heating memberis greater than the porosity of the blocking member.

In this way, when entering the substrateand flowing to the atomization surface, the aerosol-forming medium may be attracted by the porous heating member with the larger porosity and concentrated in the first atomization region, thereby further reducing residence of the aerosol-forming medium in the second atomization regionin which the blocking memberis located, and increasing the degree of oversaturation of the aerosol-forming medium in the first atomization region.

Optionally, the porosity of the blocking memberis less than 20%, and the porosity of the heating memberranges from 20% to 70%. Within this porosity range, the difficulty of manufacturing of the blocking memberand the heating membercan be reduced.

Specifically, the pore size of the porous heating member ranges from 10 mm to 50 mm.

In this embodiment of this application, when the substrateis a porous substrate, the porosity of the porous substrate ranges from 50% to 80%.

Specifically, the pore size of the porous substrate ranges from 15 mm to 60 mm.

In some embodiments, to simplify a manufacturing process of the atomizing core, the heating memberand the blocking memberare integrally formed.

Specifically, the heating memberand the blocking memberare integrally formed by using a printing process. The material of the heating memberand the material of the blocking membermay be the same.