This application claims priority of the Chinese Patent Application No. 202011122841.1, entitled “Atomizing core, Atomizer and Electronic Atomization Device”, filed on Oct. 20, 2020, the entire contents of which is incorporated herein by reference.
The present disclosure relates to the field of atomization technology, and particularly to an atomizing core, an atomizer and an electronic atomization device.
The electronic atomization devices have an appearance and taste similar to ordinary cigarettes, but usually do not contain other harmful components such as tar, suspended particles and the like in the cigarettes. Therefore, the electronic atomization devices are commonly used as substitutes for the cigarettes. An electronic atomization device usually includes an atomizer. The atomizer includes an atomizing core. The atomizing core includes a substrate and a heating element. The substrate blocks a liquid storage cavity in the atomizer and can buffer and conduct the liquid in the liquid storage cavity. The heating element is arranged on the substrate and configured to atomize the liquid conducted to the substrate to form smoke that can be sucked by the user. However, for conventional atomizers, smoke accumulates on the surface of and around the heating element, as the smoke continues to accumulate, it will lead to formation of burnt or other peculiar smells in the smoke, thereby affecting the user experience.
The technical problem to be solved by the present disclosure is how to prevent the tobacco soot from accumulating on the surface and periphery of the heating element.
An atomizing core, including:
a substrate, having an atomization surface and being configured to buffer and conduct a liquid;
a heating element, including a heating portion attached to the substrate, the heating portion being capable of generating heat to atomize the liquid on the atomization surface to form smoke; and
a protective layer, provided on the atomization surface and covering the heating portion, and smoke being capable of overflowing from the protective layer.
In an embodiment, micropores are formed in the protective layer with a porosity in a range of 30% to 70%, and a thickness of the protective layer is in a range of 100 μm to 500 μm.
In an embodiment, the heating element further includes electrode portions configured to conduct electricity, the electrode portion is electrically connected to the heating portion, and the protective layer covers all the electrode portions.
In an embodiment, the protective layer has a covering surface provided towards the atomization surface, the covering surface is recessed to form a groove, and at least a part of the heating portion is matched with the groove.
In an embodiment, the heating portion has a line-shaped structure or a membrane-shaped structure; when the heating portion is the membrane-shaped structure, the thickness of the heating portion is in a range of 30 μm to 130 μm.
In an embodiment, micropores are formed in the substrate with a porosity in a range of 20% to 70%, and a thickness of the substrate is in a range of 2 mm to 5 mm.
An atomizing core, including:
a substrate, having an atomizing surface and being configured to buffer and conduct a liquid;
a heating element, including a heating portion attached to the substrate, the heating portion be capable of generating heat to atomize the liquid on the atomization surface to form smoke; and
a protective layer, provided on the atomization surface, wherein the protective layer has a bottom surface that faces away from the atomization surface, and the bottom surface is provided with a through groove passing through the protective layer, at least a part of the heating portion is located in the through groove, and a surface of the heating portion in the through groove is kept at a set distance from the bottom surface along a thickness direction of the protective layer.
In an embodiment, the protective layer has a covering surface arranged opposite to the bottom surface to cover the atomization surface, and the protective layer is provided with a vent hole passing through the covering surface and in communication with outside, and smoke is capable of overflowing from the vent hole.
In an embodiment, the vent hole forms a through opening on the covering surface, the through opening has an orthographic projection on the atomization surface, and the orthographic projection is kept at a set distance from a coverage of the heating portion.
In an embodiment, the vent hole has an orthographic projection on the atomization surface, and the orthographic projection is kept at a set distance from a coverage of the heating portion.
In an embodiment, a central axis of the vent hole is arranged at an acute angle with the atomization surface; or, the vent hole includes a first bending section and a second bending section which are in communication with each other, the first bending section passing through the covering surface, the second bending section is in direct communication with the outside, a central axis of the first bending section is arranged at an angle with the atomization surface, a central axis of the second bending section is arranged at an angle with the central axis of the first bending section.
An atomizer, including a liquid storage cavity and the atomizing core according to any one of the above embodiments, and the substrate further has a liquid absorption surface facing opposite to the atomization surface, the liquid absorption surface is configured to absorb a liquid in the liquid storage cavity into the substrate.
An electronic atomization device, including a power supply and the above-mentioned atomizer, the power supply is electrically connected to the heating element.
A technical effect of an embodiment of the present disclosure is that, by providing the protective layer, most of the liquid particles and solid particles in the smoke flowing back to the atomizing core are directly absorbed in the protective layer, so that the protective layer has good filtration function to prevent part of the liquid particles and solid particles from flowing to the atomization surface to form tobacco soot accumulated on the surface and periphery of the heating part, thereby greatly reducing the proportion of liquid particles and solid particles in the smoke that are converted into the tobacco soot, and reducing the amount of tobacco soot accumulated on the surface and periphery of the heating portion.
In order to facilitate understanding of the disclosure, the disclosure will be described more comprehensively below with reference to the accompanying drawings. Preferred embodiments of the present disclosure are shown in the accompanying drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, the objective of these embodiments is to provide more thorough understanding of the present disclosure.
It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be “connected” to another element, the element can be directly connected to the other element or there may be an intermediate element at the same time. The terms “inside”, “outside”, “left”, “right” and the like used herein are for illustrative purposes only and are not meant to be the only embodiments.
Referring to
The heating portion 210 can be provided on the substrate 100 by means of screen printing. For example, the heating portion 210 can be directly attached to the atomization surface 110 so that the heating portion 210 protrudes from the atomization surface 110 to a certain height. For another example, a part of the atomization surface 110 is recessed to form a sink groove, and the heating portion 210 is matched with the sink groove, so that the surface of the heating portion 210 can be flush with the non-recessed portion of the atomization surface 110. Of course, an arrangement manner of the electrode portion 220 on the substrate 100 can be the same as that of the heating portion 210. In terms of material, the heating portion 210 can be made of a metal material. In terms of structure, the heating portion 210 can have a line-shaped structure or a membrane-shaped structure. When the heating portion 210 has a membrane-shaped structure, the heating portion 210 can be a dense metal film, a porous metal film, or the like. The thickness H3 of the membrane-shaped heating portion 210 ranges from 30 μm to 130 μm, for example, the specific value can be 30 μm, 50 μm, 100 μm, 130 μm, or the like. The electrode portion 220 may also have a line-shaped structure or a membrane-shaped structure.
Referring to
When the user stops smoking, a pressure at the position where the entire atomizing core 20 is located is relatively small, so that the smoke containing both solid particles and liquid particles flows back to the atomizing core 20. If the protective layer 300 is not provided, most of the liquid particles and solid particles in the smoke may flow directly to the atomizing surface 110 without any hindrance, thereby forming tobacco soot that accumulates on the surface and periphery of the heating portion 210, that is, the tobacco soot covers or surrounds the periphery of the heating portion 210. It is obvious that the tobacco soot is in a direct connection with the heating portion 210. Therefore, a large amount of tobacco soot is formed by accumulating on the surface and periphery of the heating portion 210 in a short time. When the tobacco soot accumulates to a certain amount and when the heating portion 210 generates the heat, the temperatures on the surface and periphery of the heating portion 210 are relatively higher, the tobacco soot may have a chemical reaction at a high temperature to generate a burnt, pungent or other odorous gas, which will be mixed in the smoke and taken in by the user, resulting in a bad taste of the smoke and affecting the user experience. Of course, the tobacco soot may also produce a certain amount of toxic gas, which will affect human health.
However, by providing the protective layer 300 in the above embodiment, most of the liquid particles and solid particles in the smoke are directly absorbed in the protective layer 300, so that the protective layer 300 has a good filtering function and avoids that this part of the liquid particles and solid particles flow to the atomization surface 110 to form the tobacco soot accumulated on the surface and periphery of the heating portion 210, thereby greatly reducing the proportion of liquid particles and solid particles in the smoke which are converted into the tobacco soot, thereby reducing the amount of tobacco soot produced and accumulated on the surface and periphery of heating portion 210 due to single smoking. Therefore, within the same period of time, the amount of tobacco soot accumulated on the surface and periphery of the heating portion 210 and the speed of the accumulation may be greatly reduced. In the case where the amount of the smoke tobacco soot is less than a certain value, the tobacco soot cannot produce burning, pungent, or other odorous gases at high temperatures that affect the taste of the smoke, thereby ensuring the taste and user experience of the smoke. At the same time, the tobacco soot can be prevented from generating toxic gases, and the safety of the atomizer 10 during use can be improved.
In fact, the liquid in the liquid storage cavity 11 usually contains essence, and nicotine salt can even be added. When the liquid is atomized by absorbing heat, the essence is decomposed to obtain high molecular compounds, and the nicotine salt produces carbonate. The above high molecular compounds and the carbonate serve as a catalytic, which make more liquid particles and solid particles in the smoke quickly converted into tobacco soot, that is, the conversion rate of tobacco soot is increased, thereby further accelerating the accumulation of the tobacco soot. However, by providing the protective layer 300 in the above embodiment, the protective layer 300 can give full play to its own absorption and filtering functions, which can not only hinder the rapid flow of the liquid particles and solid particles, but also in view of the fact that the protective layer 300 uses a ceramic material, the ceramic material can increase the absorption of the above-mentioned high molecular compounds and carbonates, and can reduce the catalysis during the formation of the tobacco soot, thereby reducing the amount of the tobacco soot accumulated.
At the same time, by providing the protective layer 300, both the protective layer 300 and the substrate 100 can form a certain effect of sandwiching on the heating portion. The protective layer 300 can absorb external impact energy and prevent the external impact from directly acting on the heating part, thereby reducing the offset function of the external impact force and the thermal stress generated during the heating process on the adhesive force of the heating portion, and preventing the heating portion from falling off the substrate 100 and improving the stability and reliability of the heating portion fixed on the substrate 100. In addition, the protective layer 300 can also absorb and buffer the liquid leakage from the substrate 100 to a certain extent, prevent the entire atomizing core 20 from leaking in a short period of time, and improve the leakage prevention performance of the atomizing core 20.
In some embodiments, the protective layer 300 may further cover the electrode portions 220 of the heating element 200. For example, the protective layer 300 may cover all the electrode portions 220. By covering the electrode portions 220, the protective layer 300 can protect the electrode portions 220, reduce the offset effect of external impact force and thermal stress on the adhesive force of the electrode portions 220, thereby preventing the electrode portions 220 from falling off the substrate 100, and improving the stability and reliability of the electrode portions 220 fixed on the substrate 100.
The protective layer 300 has a certain thickness H2; and the thickness H2 ranges from 100 μm to 500 μm. For example, the specific value can be 100 μm, 200 μm, 300 μm, or 500 μm. When the thickness of the protective layer 300 increases, a flow resistance of the liquid particles and solid particles in the micropores and a flow path to the atomization surface 110 can be increased, thereby increasing the absorption function of the protective layer 300 on the liquid particles, the solid particles, the high molecular compounds and carbonates, and reducing the amount of the tobacco soot accumulated. Of course, when the thickness of the protective layer 300 is larger, the volume of the protective layer 300 increases, which can increase the amount of liquid leakage buffered by the protective layer 300 from the substrate 100 and improve the leakage prevention performance of the atomizing core 20.
Referring to
In some embodiments, for example, the vent hole 330 covers the covering surface 310 to form a through opening 333. The through opening 333 has an orthographic projection on the atomization surface 110, and the orthographic projection is kept at a set distance B from the coverage of the heating portion 210. When the user stops smoking, the smoke flowing back to the atomizing core 20 can also enter the protective layer 300 through the vent hole 330 and flow to the atomization surface 110. Since the through opening 333 is kept at a set distance B from the coverage of the heating portion 210 on the atomization surface, the smoke flowing back to the vent hole 330 forms the tobacco soot in an area on the atomization surface 110 approximate to the through opening 333. The tobacco soot is not directly connected to the heating portion 210 but is kept at a set distance from the heating portion 210. Because the location of the tobacco soot is far from the heating portion 210, and the amount of the tobacco soot accumulated is smaller, the location of the tobacco soot is difficult to form the high temperature and amount of substance required for the chemical reaction of the tobacco soot, accordingly the tobacco soot is difficult to produce burnt smell or other peculiar smell of gas. For another example, the entire vent hole 330 has an orthographic projection on the atomization surface 110, and the orthographic projection is kept at a set distance from the coverage of the heating portion 210, so that the smoke entering the vent hole 330 is difficult to pass through the micropores in the protective layer 300 to reach the surface or periphery of the heating portion 210, thereby further preventing the smoke from forming tobacco soot on the surface or periphery of the heating portion 210.
Referring to
The covering surface 310 of the protective layer 300 is recessed to form a groove 340, and at least a part of the heating portion 210 can be matched with the groove 340, so that the heating portion 210 can full use of the installation space of the groove 340, and the atomizing core 20 has a compact structure; meanwhile, the groove 340 also forms a limit effect on the heating portion 210, which improves the stability and reliability of the installation of the heating portion 210.
Referring to
Referring to
The present disclosure also provides an electronic atomization device. The electronic atomization device includes a power supply, a controller, a sensor, and the atomizer 10 described above. The power supply is electrically connected to the controller and the heating element 200. When the sensor acquires the suction information of the user and transmits the suction information to the controller, the controller controls the power supply to supply power to the heating element 200, and the heating element 200 converts electrical energy into heat energy, so that the liquid is atomized to form smoke under the action of the heat energy. The above-mentioned suction information can include a negative pressure generated in the airflow passage 12 during the suction process of the user. The electronic atomization device includes the above-mentioned atomizer 10, which can protect the taste and safety of the smoke generated by the electronic atomization device.
The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, all should be considered as the scope of the present disclosure.
The above-mentioned embodiments only express several exemplary embodiments of the present disclosure, and the descriptions are relatively specific and detailed, but they should not be interpreted as limiting the scope of the disclosure. It should be pointed out that those of ordinary skill in the art can make several modifications and improvements without departing from the concept of the present disclosure, and these all fall within the protection scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be subject to the appended claims.
Number | Date | Country | Kind |
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202011122841.1 | Oct 2020 | CN | national |