Patent Application
20250194687
Priority is claimed to Chinese Patent Application No. 202311743375.2, filed on Dec. 18, 2023, the entire disclosure of which is hereby incorporated by reference herein.
The present invention relates to the field of electronic atomization technologies, and in particular, to an atomization core, an atomizer, and an electronic atomization device.
In the related art, an electronic atomization device mainly includes an atomizer and a power supply assembly. The atomizer generally includes a liquid storage member and an atomization core. The liquid storage member is configured to store an atomizable liquid substrate. The atomization core is configured to heat and atomize the liquid substrate to form an aerosol for a smoker to inhale. The power supply assembly is configured to supply power to the atomizer.
In the related art, a cylindrical atomization core in a central through hole has advantages of an elongated atomization core and a circular tube-like atomization core, but also has a problem of poor user experience.
In an embodiment, the present invention provides an atomization core, comprising: a liquid guiding element having a first surface and a second surface opposite each other, and a through hole running through the first surface and the second surface; a blocking member arranged on at least part of an inner wall surface of the through hole, and defining an air outlet channel or fitting with the part of the inner wall surface of the through hole to form an air outlet channel, a porosity of the blocking member being less than a porosity of the liquid guiding element; and a heating member arranged on the first surface of the liquid guiding element, the heating member being configured to atomize an aerosol-forming material to form an aerosol, wherein the aerosol flows out through the air outlet channel.
Subject matter of the present disclosure will be described in even greater detail below based on the exemplary figures. All features described and/or illustrated herein can be used alone or combined in different combinations. The features and advantages of various embodiments will become apparent by reading the following detailed description with reference to the attached drawings, which illustrate the following:
In an embodiment, the present invention provides mainly resolves a problem that user experience is affected because a central through hole tends to accumulate an aerosol-forming material or condensate of an aerosol.
To resolve the foregoing technical problem, a technical solution provided in this application is as follows. An atomization core is provided, including: a liquid guiding element, having a first surface and a second surface opposite to each other, and a through hole running through the first surface and the second surface; a blocking member, arranged on at least part of the inner wall surface of the through hole, and defining an air outlet channel or fitting with the part of the inner wall surface of the through hole to form an air outlet channel, where the porosity of the blocking member is less than the porosity of the liquid guiding element; and a heating member, arranged on the first surface of the liquid guiding element, and configured to atomize an aerosol-forming material to form an aerosol, where the aerosol flows out through the air outlet channel.
In an implementation, the blocking member includes a closed-loop covering layer or a sleeve tube, and the blocking member covers the entire inner wall surface of the through hole and is enclosed to form the air outlet channel.
In an implementation, the sleeve tube is nested in the through hole and is bonded to the inner wall surface of the through hole; and the sleeve tube includes a sleeve portion and a protruding portion that are axially connected, the sleeve portion covers the at least part of the inner wall surface of the through hole, and the protruding portion protrudes from the first surface of the liquid guiding element in the axial direction.
In an implementation, in the axial direction of the sleeve tube, the length of the protruding portion is greater than the length of the heating member.
In an implementation, the thickness of the heating member is greater than or equal to 0.01 mm and less than or equal to 2 mm; and in the axial direction of the sleeve tube, the length of the protruding portion of the sleeve tube is not greater than 5 mm.
In an implementation, the blocking member is in contact with the heating member.
In an implementation, the aperture of the through hole is greater than or equal to 0.1 mm and less than or equal to 5 mm; and the wall thickness of the blocking member is greater than or equal to 0.01 mm and less than or equal to 2 mm.
In an implementation, the material of the blocking member includes one or more of dense metal, dense ceramic, dense glass, and dense polymer.
In an implementation, the heating member includes a surrounding portion and two connecting portions; the surrounding portion is arranged in the circumferential direction of the through hole and is serrated; and the two connecting portions are respectively connected to two ends of the surrounding portion, and are electrically connected to an electrode.
In an implementation, part of the side wall of the sleeve tube in the axial direction protrudes from the second surface of the liquid guiding element.
To resolve the foregoing technical problem, a second technical solution provided in this application is as follows. An atomizer is provided, including: a housing, having a liquid storage chamber and an atomization chamber, the liquid storage chamber being configured to store an aerosol-forming material; and an atomization core, arranged in the housing, and being the foregoing atomization core, where a heating member and an air outlet channel of the atomization core are in direct communication with the atomization chamber.
To resolve the foregoing technical problem, a third technical solution provided in this application is as follows. An electronic atomization device is provided, including: an atomizer, being the foregoing atomizer; and a power supply assembly, electrically connected to the atomizer, and configured to supply power to the atomization core.
Beneficial effects of this application are as follows. Different from the related art, this application provides an atomization core. The atomization core includes: a liquid guiding element, having a first surface and a second surface opposite to each other, and a through hole running through the first surface and the second surface; a blocking member, arranged on at least part of the inner wall surface of the through hole, and defining an air outlet channel or fitting with the part of the inner wall surface of the through hole to form an air outlet channel, where the porosity of the blocking member is less than the porosity of the liquid guiding element; and a heating member, arranged on the first surface of the liquid guiding element, and configured to atomize an aerosol-forming material to form an aerosol, where the aerosol flows out through the air outlet channel. The aerosol-forming material penetrates to the surface of the heating member through the liquid guiding element, and is heated and atomized to form the aerosol for a user to inhale through the air outlet channel. In the atomization core, the blocking member is arranged on the inner wall surface of the through hole of the liquid guiding element, and defines the air outlet channel. The porosity of the blocking member is less than the porosity of the liquid guiding element. In this way, the aerosol-forming material inside the liquid guiding element does not penetrate into the air outlet channel through the inner wall surface of the through hole, avoiding clogging of the air outlet channel and improving user experience. Condensate of the aerosol in the air outlet channel also does not penetrate into the liquid guiding element through the inner wall surface of the through hole, avoiding secondary heating.
The technical solutions in the embodiments of this application are clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are merely some rather than all of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.
The terms “first”, “second”, and “third” in this application are merely intended for a purpose of description, and shall not be understood as indicating or implying relative significance or implicitly indicating the number of indicated technical features. Therefore, features defining “first”, “second”, and “third” can explicitly or implicitly include at least one of the features. In the description of this application, “a plurality of” means at least two, such as two and three unless it is specifically defined otherwise. All directional indications (for example, upper, lower, left, right, front, and rear) in the embodiments of this application are merely used for explaining relative position relationships, movement situations, or the like between the various components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications change accordingly. In addition, the terms “include”, “have”, and any variants thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but further optionally includes a step or unit that is not listed, or further optionally includes another step or unit that is intrinsic to the process, method, product, or device.
“Embodiment” mentioned in this specification means that particular features, structures, or characteristics described with reference to the embodiment may be included in at least one embodiment of this application. The term appearing at different positions of this specification may not refer to the same embodiment or an independent or alternative embodiment that is mutually exclusive with another embodiment. A person skilled in the art explicitly or implicitly understands that the embodiments described in this specification may be combined with other embodiments.
The study found that the main reason for poor user experience caused by a cylindrical atomization core in a central through hole is as follows.
Seepage of central hole: The substrate of the cylindrical atomization core in the central through hole is a porous structure. During inhalation, the viscosity of an atomization liquid in the porous substrate decreases after preheating, making the atomization liquid prone to flow and penetrate, and prone to accumulate on the wall of the central hole under the effect of surface tension and the Venturi effect. When an atomization liquid with low viscosity accumulates on the wall of the central hole, the atomization liquid is mixed into an aerosol during subsequent inhalation, affecting the inhalation experience; and when an atomization liquid with high viscosity accumulating on the wall of the central hole cools down, the central hole may be clogged or even no aerosol flows out.
Reverse flow of oil film on heating surface: During the inhalation, the atomization liquid in the porous substrate quickly accumulates on an atomization surface to form an oil film of a specific thickness. The oil film on the atomization surface of the cylindrical atomization core in the central through hole flows into the central through hole with the inhaled smoke under the Venturi effect, which also causes leakage or clogging.
Backflow of condensate: During the inhalation, since an aerosol with high temperature is in contact with an airflow tube, there is a temperature difference, and condensate is formed in the airflow tube. After a specific amount of condensate accumulates, the condensate generally flows back into the central hole, causing a clogging problem. In addition, the returned condensate may penetrate into the atomization core through the central hole for secondary atomization. However, the condensate is mainly a heated and atomized atomization liquid, and has a composition different from that of the original atomization liquid. Therefore, an aerosol generated by secondary atomization of the condensate inevitably affects the inhalation experience.
Based on this, the embodiments of this application provide an atomization core, which effectively improves effects such as the seepage of the central hole of the atomization core, the reverse flow of the oil film on the heating surface, and the backflow of the condensate, thereby improving user experience.
The following describes this application in detail with reference to the accompanying drawings and embodiments.
Referring to
In this embodiment, referring to
In an embodiment, referring to
The liquid guiding element 211 has a first surface 2111 and a second surface 2112 opposite to each other in the thickness direction of the liquid guiding element 211. The liquid guiding element 211 has a through hole 2113 running through the first surface 2111 and the second surface 2112. The first surface 2111 of the liquid guiding element 211 is an atomization surface, and the heating member 212 is arranged on the atomization surface. The atomization surface is in communication with the atomization chamber 23. The second surface 2112 of the liquid guiding element 211 is a liquid absorbing surface, and the liquid absorbing surface is in communication with the liquid storage chamber 22. The aerosol-forming material in the liquid storage chamber 22 penetrates to the atomization surface from the liquid absorbing surface by means of a capillarity action of the liquid guiding element 211, and the aerosol-forming material is atomized on the atomization surface to form the aerosol in the atomization chamber 23. The aerosol enters the airflow channel 24 of the atomizer 2 through the air outlet channel 2114, and is inhaled by the user through a nozzle.
The liquid guiding element 211 may be a porous substrate. The porous substrate material may be a mixture of one or more materials such as aluminum oxide, silicon oxide, silicon nitride, silicate, hydroxyapatite, and silicon carbide. Slip casting, powder compression, or the like may be used for molding. The shape of the porous substrate is not limited, and may be a cylinder, a cube, a polyhedron, or the like. The porosity of the porous substrate is greater than or equal to 35% and less than or equal to 80%. The average aperture of the porous substrate is greater than or equal to 3 m and less than or equal to 50 km.
In an embodiment, the through hole 2113 of the liquid guiding element 211 may be a cylinder, a prism, or the like. The aperture of the through hole 2113 is greater than or equal to 0.1 mm and less than or equal to 5 mm, for example, 0.1 mm, 0.3 mm, or 0.5 mm. When the aperture is less than 0.1 mm, the through hole can accommodate an excessively small amount of aerosol, which is not conducive to formation of a large amount of vapor. The through hole 2113 of the liquid guiding element 211 is generally a specially opened hole, rather than a disordered hole of the porous substrate material of the liquid guiding element 211.
Specifically, in an embodiment, referring to
The surrounding portion 2121 may be a bar curve, a bar fold line, or the like. Preferably, the surrounding portion 2121 may be bent a plurality of times in a jagged or wavy shape. The two connecting portions 2122 are respectively connected to two ends of the surrounding portion 2121, and are electrically connected to an external circuit. The surrounding portion 2121 is configured to increase a heating area of the heating member 212, so that the surrounding portion 2121 may heat and atomize more atomization media in an atomization surface with the same area.
The heating member 212 may be a metal alloy such as an iron-chrome alloy, an iron-chrome aluminum alloy, an iron-chrome-nickel alloy, a chrome-nickel alloy, a titanium alloy, a stainless steel alloy, a Kamar alloy, or a precious metal alloy. The heating member 212 may be obtained in one or more manners such as die stamping, casting, mechanical weaving, chemical etching, ion sputtering, plating, bonding, and screen printing. The width of the heating member 212 is greater than or equal to 0.05 mm and less than or equal to 3 mm. The heating member 212 may be a dense metal or a porous metal. For example, the aperture of the porous metal is greater than or equal to 0.01 mm and less than or equal to 1.00 mm.
The atomization core 21 may be obtained through sintering by integrally forming the heating member 212 and the liquid guiding element 211. Alternatively, the liquid guiding element 211 may be prepared first, and then the heating member 212 is obtained in one or more manners such as chemical etching, screen printing, or direct bonding. The heating member 212 may be attached to or embedded in the surface of the liquid guiding element 211, or may be embedded inside the liquid guiding element 211.
n an embodiment, the thickness of the heating member 212 is greater than or equal to 0.01 mm and less than or equal to 2 mm, for example, 0.01 mm, 0.1 mm, 0.5 mm, 1 mm, 1.5 mm, or 2 mm. In this way, combined with the surface tension of the liquid, the aerosol-forming material is more likely to form a liquid film on the first surface 2111. After the aerosol-forming material attached to the heating member 212 is atomized, the aerosol-forming material around the heating member 212 flows into and complements the aerosol-forming material on the heating member 212, thereby facilitating the continuation of the atomization.
The blocking member 213 is at least partially arranged on at least part of the inner wall surface of the through hole 2113 of the liquid guiding element 211, and defines the air outlet channel 2114. Alternatively, the blocking member 213 fits with the part of the inner wall surface of the through hole 2113 to form the air outlet channel 2114. The air outlet channel 2114 is in communication with the airflow channel 24 of the atomizer 2. The porosity of the blocking member 213 is less than the porosity of the liquid guiding element 211. The blocking member 213 fits with the through hole 2113 of the liquid guiding element 211 to form the air outlet channel 2114. During the inhalation, the viscosity of the aerosol-forming material in the liquid guiding element 211 decreases after preheating, making the aerosol-forming material prone to flow and penetrate. Therefore, by arranging the blocking member 213, the aerosol-forming material in the liquid guiding element 211 does not penetrate into the air outlet channel 2114 through the inner wall surface of the through hole 2113, avoiding the clogging or leakage of the through hole 2113 caused by the accumulation of the aerosol-forming material in the through hole 2113, and also avoiding being mixed into the aerosol to affect the aerosol.
Referring to
n the foregoing, the blocking member 213 is arranged in the through hole 2113 of the liquid guiding element 211 of the atomization core 21, and the porosity of the blocking member 213 is less than the porosity of the liquid guiding element 211. The aerosol-forming material in the liquid storage chamber 22 penetrates to the surface of the heating member 212 through the liquid guiding element 211. The heating member 212 heats the aerosol-forming material after energized, to form the aerosol through atomization. The aerosol flows into the airflow channel 24 of the atomizer 2 through the air outlet channel 2114 for a user to inhale through a suction nozzle. In the atomization core 21, the blocking member 213 is arranged on the inner wall surface of the through hole 2113 of the liquid guiding element 211, and defines the air outlet channel 2114. The porosity of the blocking member 213 is less than the porosity of the liquid guiding element 211. In this way, the aerosol-forming material inside the liquid guiding element 211 does not penetrate into the air outlet channel 2114 through the inner wall surface of the through hole 2113, avoiding clogging of the air outlet channel 2114 and improving user experience. Condensate of the aerosol in the air outlet channel 2114 also does not penetrate into the liquid guiding element 211 through the inner wall surface of the through hole 2113, avoiding secondary heating.
Specifically, in an embodiment, the blocking member 213 includes a closed-loop covering layer. The covering layer may be a coating layer (for example, spray coating), a deposited layer (for example, vapor deposition), or a plating layer (for example, electroless plating). The covering layer is a non-self-supporting structure, that is, cannot exist independently from the support of the inner wall surface of the through hole 2113. Alternatively, the blocking member 213 includes a sleeve tube. The sleeve tube is a self-supporting structure that may exist independently, and is preferably a hard material. The blocking member 213 is a dense heat-resistant material. The material of the blocking member 213 includes, but is not limited to, one or more of dense metal, dense ceramic, dense glass, and dense polymer, or may be in the form of a dense tube or a dense coating layer or plating layer. Preferably, the blocking member 213 covers the entire inner wall surface of the through hole 2113, and is enclosed to form the air outlet channel 2114. In this way, the blocking member 213 can effectively block the aerosol-forming material in the liquid guiding element 211 from flowing into the air outlet channel 2114, thereby reducing the risk of clogging the air outlet channel 2114.
In an embodiment, referring to
Referring to
In the axial direction Y of the sleeve tube, the length L1 of the protruding portion 2132 of the sleeve tube is not greater than 5 mm. An excessively long protruding portion 2132 easily affects a space of the atomization chamber 23 that is in communication with the first surface 2111, which is not conducive to storage and flow of the aerosol generated in the atomization chamber 23.
In an embodiment, referring to
In an embodiment, the wall thickness of the blocking member 213 is greater than or equal to 0.01 mm and less than or equal to 2 mm, for example, 0.01 mm, 0.1 mm, 0.15 mm, or 2 mm. The excessively thick wall reduces the cross-sectional area of the through hole 2113, and reduces the airflow amount of the through hole 2113, which is not conducive to the atomization effect.
In an embodiment, referring to
This application provides an atomization core 21. The atomization core 21 includes: a liquid guiding element 211, having a first surface 2111 and a second surface 2112 opposite to each other, and a through hole 2113 running through the first surface 2111 and the second surface 2112; a blocking member 213, arranged on at least part of the inner wall surface of the through hole 2113, and defining an air outlet channel 2114 or fitting with the part of the inner wall surface of the through hole 2113 to form an air outlet channel 2114, where the porosity of the blocking member 213 is less than the porosity of the liquid guiding element 211; and a heating member 212, arranged on the first surface 2111 of the liquid guiding element 211, and configured to atomize an aerosol-forming material to form an aerosol, where the aerosol flows out through the air outlet channel 2114. The aerosol-forming material in the liquid storage chamber 22 penetrates to the surface of the heating member 212 through the liquid guiding element 211. The heating member 212 heats the aerosol-forming material after energized, to form the aerosol through atomization. The aerosol flows into the airflow channel 24 of the atomizer 2 through the air outlet channel 2114 for a user to inhale through a suction nozzle. In the atomization core 21, the blocking member 213 is arranged on the inner wall surface of the through hole 2113 of the liquid guiding element 211, and defines the air outlet channel 2114. The porosity of the blocking member 213 is less than the porosity of the liquid guiding element 211. In this way, the aerosol-forming material inside the liquid guiding element 211 does not penetrate into the air outlet channel 2114 through the inner wall surface of the through hole 2113, avoiding clogging of the air outlet channel 2114 and improving user experience. Condensate of the aerosol in the air outlet channel 2114 also does not penetrate into the liquid guiding element 211 through the inner wall surface of the through hole 2113, avoiding secondary heating.
The foregoing descriptions are merely implementations of this application, and the patent scope of this application is not limited thereto. All equivalent structure or process changes made according to the content of this specification and accompanying drawings in this application or by directly or indirectly applying this application in other related technical fields shall fall within the protection scope of this application.
While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. It will be understood that changes and modifications may be made by those of ordinary skill within the scope of the following claims. In particular, the present invention covers further embodiments with any combination of features from different embodiments described above and below. Additionally, statements made herein characterizing the invention refer to an embodiment of the invention and not necessarily all embodiments.
The terms used in the claims should be construed to have the broadest reasonable interpretation consistent with the foregoing description. For example, the use of the article “a” or “the” in introducing an element should not be interpreted as being exclusive of a plurality of elements. Likewise, the recitation of “or” should be interpreted as being inclusive, such that the recitation of “A or B” is not exclusive of “A and B,” unless it is clear from the context or the foregoing description that only one of A and B is intended. Further, the recitation of “at least one of A, B and C” should be interpreted as one or more of a group of elements consisting of A, B and C, and should not be interpreted as requiring at least one of each of the listed elements A, B and C, regardless of whether A, B and C are related as categories or otherwise. Moreover, the recitation of “A, B and/or C” or “at least one of A, B or C” should be interpreted as including any singular entity from the listed elements, e.g., A, any subset from the listed elements, e.g., A and B, or the entire list of elements A, B and C.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202311743375.2 | Dec 2023 | CN | national |
