Patent Description:
An electronic atomizing device is formed by components such as a heating body, a battery, and a control circuit, etc. The heating body is a core component of the electronic atomizing device, and characteristics thereof decide an atomizing effect and use experience of the electronic atomizing device.

<CIT> discloses an atomization assembly and an electronic atomization device. The atomization assembly includes an e-liquid storage compartment, a heating body an e-liquid guiding member and a fixing seat; the heating body includes a dense base and a heating member; the dense base has an atomization surface and an e-liquid suction surface opposite each other, the dense base has a plurality of first micropores, and the first micropores extend from the e-liquid suction surface to the atomization surface; the heating member is provided on the atomization surface; the e-liquid guiding member is used for guiding e-liquid in the e-liquid storage compartment to the e-liquid suction surface of the heating body; the fixing seat is used for supporting the e-liquid guiding member; the e-liquid guiding member is sandwiched between the heating body and the fixing seat, and the heating body, the e-liquid guiding member and the fixing seat are sequentially stacked; and the dense base suctions the e-liquid from the e-liquid guiding member by means of capillary action of the first micropores, and the heating member heats and atomizes the e-liquid in the dense base.

<CIT> discloses an electronic cigarette atomizer, including an atomization assembly and a liquid reservoir engaging with the atomization assembly; the liquid reservoir includes a liquid storage cavity; wherein the atomization assembly includes a lower holder, an upper holder installed on the lower holder, and a heating assembly clamped between the lower and the upper holders; the heating assembly includes a porous body and at least one heater engaging with the porous body, and the porous body has an atomized side and a liquid absorption side; and the liquid absorption side communicates with the liquid storage cavity, and an atomization cavity is formed between the atomized side and the lower holder.

<CIT> discloses a heat-generating body assembly and a manufacturing method therefor, and an electronic atomization apparatus. The heat-generating body assembly includes: at least one first porous basal body used for storing a liquid; a first heat-generating film located on one surface of the first porous basal body and used for quantitatively discharging the liquid; second porous basal bodies located on one side, distant from the first porous basal body, of the first heat-generating film and used for directionally conducting the liquid that is quantitatively discharged by the first heat-generating film; and a second heat-generating film located on one side, distant from the first heat-generating film, of the second porous basal bodies and used for generating heat so as to atomize the liquid in the second porous basal bodies.

As technologies advance, requirements of a user on the atomizing effect of the electronic atomizing device become increasingly high. To meet the requirements of the user, a porous heating body made of a dense substrate such as glass is provided. However, the heat conduction efficiency of a dense substrate defining through holes is relatively poor when compared with a porous substrate defining disordered through holes (such as porous ceramic), which affects the atomizing efficiency.

The present disclosure provides a heating body with a dense substrate, an atomizer and an electronic atomizing device both including the heating body to improve the atomizing efficiency.

Technical effects of the present disclosure are as follows. Different from the related art, the present disclosure discloses a heating body, an atomizer, and an electronic atomizing device. The heating body includes a dense substrate, and the dense substrate includes a liquid absorbing surface and an atomizing surface arranged opposite to each other. A plurality of micropores are defined on the dense substrate, and the plurality of micropores extend through from the liquid absorbing surface to the atomizing surface. The atomizing surface is a wetting structure on which surface treatment is performed, and the wetting structure is fluidly coupled to the plurality of micropores. Therefore, a wetted area of the atomizing surface is enlarged, and the atomizing efficiency is improved.

To describe the technical solutions in the embodiments of the present disclosure more clearly, the following briefly introduces the accompanying drawings required for describing the embodiments. Apparently, the accompanying drawings in the following description show merely some embodiments of the present disclosure, and those skilled in the art may still derive other accompanying drawings from these accompanying drawings without creative efforts.

The technical solutions in the embodiments of the present disclosure are clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are merely some rather than all of the embodiments of the present disclosure.

In the following description, for the purpose of illustration rather than limitation, specific details such as the particular system structure, interface, and technology are provided to thoroughly understand the present disclosure.

Terms "first", "second", and "third" in the present disclosure are merely intended for a purpose of description, and cannot be understood as indicating or implying relative significance or implicitly indicating the number of indicated technical features. Therefore, features defined with "first", "second", and "third" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, term "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, etc.) in the embodiments of the present disclosure are only used for explaining relative position relationships, movement situations, or the like between various components in a particular posture (as shown in the accompanying drawings). When the particular posture changes, the directional indications change accordingly. In the embodiments of the present disclosure, terms "include", "have", and any variant thereof are intended to cover a non-exclusive inclusion. For example, a process, a method, a system, a product, or a 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 other step or component that is intrinsic to the process, the method, the product, or the device.

Term "embodiment" mentioned in the present disclosure means that particular features, particular structures, or particular characteristics described with reference to the embodiment may be included in at least one embodiment of the present disclosure. The term appearing at different positions of the present disclosure may not refer to the same embodiment or an independent or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art explicitly or implicitly understands that the embodiments described in the present disclosure may be combined with other embodiments.

The present disclosure is described in detail below with reference to the accompanying drawings and the embodiments.

Referring to <FIG> is a structural schematic view of an electronic atomizing device according to an embodiment of the present disclosure.

In this embodiment, an electronic atomizing device <NUM> is provided. The electronic atomizing device <NUM> may be configured to atomize an aerosol-generation substance. The electronic atomizing device <NUM> includes an atomizer <NUM> and a power supply assembly <NUM> electrically connected to each other.

The atomizer <NUM> is configured to store an aerosol-generation substance and atomize the aerosol-generation substance to form aerosols that can be inhaled by a user. The atomizer <NUM> may be specifically applied to different fields such as medical care, cosmetology, and recreation inhalation. In a specific embodiment, the atomizer <NUM> may be applied to an electronic aerosol atomizing device to atomize an aerosol-generation substance and generate aerosols for inhalation by the user, and the following embodiments are described by taking the recreation inhalation as an example.

For a specific structure and functions of the atomizer <NUM>, reference may be made to the specific structure and functions of the atomizer <NUM> provided in the following embodiments, same or similar technical effects may also be implemented, and details are not described herein again.

The power supply assembly <NUM> includes a battery (not shown in the drawing) and a controller (not shown in the drawing). The battery is configured to supply electric energy for operation of the atomizer <NUM>, so as to enable the atomizer <NUM> to atomize the aerosol-generation substance to form aerosols. The controller is configured to control operation of the atomizer <NUM>. The power supply assembly <NUM> further includes other components such as a battery holder and an airflow sensor.

The atomizer <NUM> and the power supply assembly <NUM> may be integrally arranged or may be detachably connected to each other, which may be designed according to a specific requirement.

Referring to <FIG> is a structural schematic view of an atomizer of the electronic atomizing device provided in <FIG>.

The atomizer <NUM> includes a housing <NUM>, a heating body <NUM>, and an atomizing base <NUM>. The atomizing base <NUM> includes a mounting cavity (not labeled in the drawing), and the heating body <NUM> is arranged in the mounting cavity; and the heating body <NUM> is arranged together with the atomizing base <NUM> in the housing <NUM>. The housing <NUM> defines an air outlet channel <NUM>, an inner surface of the housing <NUM>, an outer surface of the air outlet channel <NUM>, and a top surface of the atomizing base <NUM> cooperate to form a liquid storage cavity <NUM>, and the liquid storage cavity <NUM> is configured to store a liquid aerosol-generation substance. The heating body <NUM> is electrically connected to the power supply assembly <NUM>, so as to atomize the aerosol-generation substance to generate aerosols.

The atomizing base <NUM> includes an upper base <NUM> and a lower base <NUM>, and the upper base <NUM> and the lower base <NUM> cooperate to form the mounting cavity; and an atomizing surface of the heating body <NUM> and a cavity wall of the mounting cavity cooperate to form an atomizing cavity <NUM>. A liquid supplying channel <NUM> is defined in the upper base <NUM>. The aerosol-generation substance in the liquid storage cavity <NUM> flows into the heating body <NUM> through the liquid supplying channel <NUM>, namely, the heating body <NUM> is in fluidly coupled to the liquid storage cavity <NUM>. An air inlet channel <NUM> is defined in the lower base <NUM>, external air enters the atomizing cavity <NUM> through the air inlet channel <NUM>, carries aerosols atomized by the heating body <NUM> to flow to the air outlet channel <NUM>, and the user inhales the aerosols through an end opening of the air outlet channel <NUM>.

Referring to <FIG>, <FIG> is a structural schematic view of a heating body according to a first embodiment of the atomizer provided in <FIG>, <FIG> is a structural schematic view of the heating body provided in <FIG> viewed from one side of an atomizing surface, <FIG> is a structural schematic view of the heating body provided in <FIG> viewed from one side of a liquid absorbing surface, and <FIG> is a schematic partially enlarged structural schematic view of <FIG>.

The heating body <NUM> includes a dense substrate <NUM>, and the dense substrate <NUM> includes a liquid absorbing surface <NUM> and an atomizing surface <NUM> arranged opposite to each other. A plurality of micropores <NUM> are defined on the dense substrate <NUM>, the plurality of micropores <NUM> are through holes extending through from the liquid absorbing surface <NUM> to the atomizing surface <NUM>, and the plurality of micropores <NUM> are designed orderly. The plurality of micropores <NUM> are configured to guide the aerosol-generation substance from the liquid absorbing surface <NUM> to the atomizing surface <NUM>. That is, the aerosol-generation substance in the liquid storage cavity <NUM> flows to the liquid absorbing surface <NUM> of the dense substrate <NUM> through the liquid supplying channel <NUM>, and is guided to the atomizing surface <NUM> through the capillary force of the plurality of micropores <NUM>. In other words, under the action of the gravity and/or the capillary force, the aerosol-generation substance flows from the liquid absorbing surface <NUM> to the atomizing surface <NUM>. The aerosol-generation substance is heated and atomized on the atomizing surface <NUM> of the heating body <NUM> to generate aerosols. The atomizing surface <NUM> is a wetting structure on which surface treatment is performed, and the wetting structure is fluidly coupled to the plurality of micropores <NUM>. The liquid absorbing surface <NUM> is a smooth surface.

It should be understood that, because the aerosol-generation substance is atomized on the atomizing surface <NUM> to generate aerosols, by arranging the wetting structure on the atomizing surface <NUM>, a wetted area of the atomizing surface <NUM> is enlarged, such that more aerosol-generation substances may be attached to the atomizing surface <NUM>, thereby improving the atomizing efficiency.

The material of the dense substrate <NUM> is glass, dense ceramic, silicon, or quartz. When the material of the dense substrate <NUM> is glass, the glass may be one of common glass, quartz glass, borosilicate glass, or photosensitive lithium aluminosilicate glass.

The dense substrate <NUM> is in a shape of a sheet. It should be understood that, a sheet-like body is described compared to a block-shaped body, a ratio of the length to the thickness of a sheet-like body is greater than a ratio of the length to the thickness of a block-shaped body; and for example, the dense substrate <NUM> may be in a shape of a rectangular sheet. The dense substrate <NUM> may also be in a shape of a plate, an arc, or a cylinder, which is specifically designed as required, and other structures of the atomizer <NUM> are matched with the shape of the dense substrate <NUM>. The plurality of micropores <NUM> on the dense substrate <NUM> are straight through holes extending through two opposite surfaces of the dense substrate <NUM>, and the axis of each of the plurality of micropores <NUM> is perpendicular to the dense substrate <NUM>. That is, the extending direction of each of the plurality of micropores <NUM> is perpendicular to the dense substrate <NUM>.

The diameter of the micropores <NUM> on the dense substrate <NUM> ranges from <NUM> to <NUM>. When the diameter of the micropores <NUM> is less than <NUM>, the liquid supplying requirement cannot be met, thereby leading to a decrease of the amount of aerosols. When the diameter of the micropores <NUM> is greater than <NUM>, the aerosol-generation substance may easily leak out from the plurality of micropores <NUM> to cause liquid leakage. In some embodiments, the diameter of the micropores <NUM> ranges from <NUM> to <NUM>. It should be understood that the diameter of the micropores <NUM> is selected according to an actual requirement.

A thickness of the dense substrate <NUM> ranges from <NUM> to <NUM>. The thickness of the dense substrate <NUM> is the distance between the liquid absorbing surface <NUM> and the atomizing surface <NUM>. When the thickness of the dense substrate <NUM> is greater than <NUM>, the liquid supplying requirement cannot be met, thereby leading to a decrease of the amount of aerosols, a great heat loss, and high costs of the dense substrate <NUM>. When the thickness of the dense substrate <NUM> is less than <NUM>, the intensity of the dense substrate <NUM> cannot be ensured, which is not conducive to improve the performance of the electronic atomizing device. Optionally, the thickness of the dense substrate <NUM> ranges from <NUM> to <NUM>. It should be understood that the thickness of the dense substrate <NUM> is selected according to an actual requirement.

The ratio of the thickness of the dense substrate <NUM> to the diameter of the micropores <NUM> ranges from <NUM>:<NUM> to <NUM>:<NUM> to improve a liquid supplying capability. When the ratio of the thickness of the dense substrate <NUM> to the diameter of the micropores <NUM> is greater than <NUM>:<NUM>, the aerosol-generation substance supplied through the capillary force of each of the plurality of micropores <NUM> can hardly meet an atomizing requirement, which easily leads to dry burning and a decrease of the amount of aerosols generated in single atomiation. When the ratio of the thickness of the dense substrate <NUM> to the diameter of the micropores <NUM> is less than <NUM>:<NUM>, the aerosol-generation substance may easily leak out from each of the plurality of micropores <NUM> to cause a waste and lead to a decrease of the atomizing efficiency, thereby leading a decrease of the total amount of aerosols. In some embodiments, the ratio of the thickness of the dense substrate <NUM> to the diameter of the micropores <NUM> ranges from <NUM>:<NUM> to <NUM>:<NUM>.

The ratio of a distance between centers of two adjacent micropores <NUM> to the diameter of the micropores <NUM> ranges from <NUM>:<NUM> to <NUM>:<NUM>, such that the intensity of the dense substrate <NUM> is improved as much as possible in a case that the plurality of micropores <NUM> on the dense substrate <NUM> have the liquid supplying capability. In some embodiments, the ratio of the distance between centers of two adjacent micropores <NUM> to the diameter of the micropores <NUM> ranges from <NUM>:<NUM> to <NUM>:<NUM>. In some embodiments, the ratio of the distance between centers of two adjacent micropores <NUM> to the diameter of the micropores <NUM> ranges from <NUM>:<NUM> to <NUM>:<NUM>.

In this embodiment, the heating body <NUM> further includes a heating component <NUM>, a positive electrode <NUM>, and a negative electrode <NUM>, and two ends of the heating component <NUM> are electrically connected to the positive electrode <NUM> and the negative electrode <NUM> respectively. The heating component <NUM> is configured to atomize the aerosol-generation substance. The heating component <NUM> is arranged on the atomizing surface <NUM> of the dense substrate <NUM>, namely, the heating component <NUM> is arranged on the surface of the wetting structure, thereby heating and atomizing the aerosol-generation substance to generate aerosols. The positive electrode <NUM> and the negative electrode <NUM> are both arranged on the atomizing surface <NUM> of the dense substrate <NUM> to be electrically connected to the power supply assembly <NUM>. The heating component <NUM> may be a component such as a heating sheet, a heating film, or a heating mesh to heat and atomize the aerosol-generation substance. In another embodiment, the heating component <NUM> may be arranged inside the dense substrate <NUM>. In still another embodiment, the dense substrate <NUM> is at least partially conductive to serve as the heating component <NUM>.

In some embodiments, the heating component <NUM> is a heating film, the thickness of the heating film ranges from <NUM> to <NUM>, and the material of the heating film is one or more of aluminum or aluminum alloy, copper or copper alloy, silver or silver alloy, nickel or nickel alloy, chromium or chromium alloy, platinum or platinum alloy, titanium or titanium alloy, zirconium or zirconium alloy, palladium or palladium alloy, iron or iron alloy, gold or gold alloy, molybdenum or molybdenum alloy, niobium or niobium alloy, and tantalum or tantalum alloy.

In some embodiments, the heating component <NUM> is a heating film, the thickness of the heating film ranges from <NUM> to <NUM>, and the material of the heating film is one or more of stainless steel (<NUM>, <NUM>, <NUM>, or <NUM>, etc.), nickel-chromium-iron alloy (inconel625 or inconel718, etc.), or nickel-based corrosion-resistant alloy (nickel-molybdenum alloy B-<NUM> or nickel-chromium-molybdenum alloy C-<NUM>, etc.).

In some other embodiments, the aerosol-generation substance may be atomized through a manner such as microwave heating or laser heating, etc., which is specifically designed as required.

The following describes the heating body <NUM> in detail by taking an example that the heating component <NUM> performs heating, the heating component <NUM> is arranged on the surface of the wetting structure, and the heating component <NUM> is a heating film.

In some embodiments, the heating film is formed on the atomizing surface <NUM> of the dense substrate <NUM> through a physical vapor deposition process. The heating film exposes its corresponding micropores <NUM> (as shown in <FIG>).

Referring to <FIG>, in this embodiment, the plurality of micropores <NUM> are merely arranged on a part of the surface of the dense substrate <NUM> in an array. Specifically, a microporous array region <NUM> and a blank region <NUM> arranged surrounding a periphery of the microporous array region <NUM> are arranged on the dense substrate <NUM>. The microporous array region <NUM> includes the plurality of micropores <NUM>, and no micropore <NUM> is arranged on the blank region <NUM>. The heating component <NUM> is arranged on the microporous array region <NUM> to heat and atomize the aerosol-generation substance, and the positive electrode <NUM> and the negative electrode <NUM> are arranged in the blank region <NUM> on the atomizing surface <NUM> to ensure the stability of the electrical connection between the positive electrode <NUM> and the negative electrode <NUM>.

Since the microporous array region <NUM> and the blank region <NUM> arranged surrounding the periphery of the microporous array region <NUM> are arranged on the dense substrate <NUM>, the number of micropores <NUM> on the dense substrate <NUM> is reduced, such that the intensity of the dense substrate <NUM> is improved and the costs for defining the micropores <NUM> on the dense substrate <NUM> are reduced. The microporous array region <NUM> in the dense substrate <NUM> are served as an atomizing region and covers the heating component <NUM> and the region around the heating component <NUM>, that is, the microporous array region <NUM> covers a region reaching a temperature for atomizing the aerosol-generation substance, such that the thermal efficiency is fully utilized.

It should be understood that only when the size of a region around the microporous array region <NUM> of the dense substrate <NUM> in the present disclosure is greater than the diameter of the micropores <NUM>, can the region be referred to as the blank region <NUM>. That is, the blank region <NUM> in the present disclosure is a region in which micropores <NUM> can be formed but no micropore <NUM> is formed, rather than a region around the microporous array region <NUM> in which micropores <NUM> cannot be formed. In some embodiments, it is considered that a blank region <NUM> is arranged surrounding the microporous array region <NUM> only when a distance between a micropore <NUM> that is closest to the boundary of the dense substrate <NUM> and the boundary of the dense substrate <NUM> is greater than the diameter of the dense substrate <NUM>.

The atomizing surface <NUM> of the dense substrate <NUM> includes a first concave-convex structure <NUM> to form the wetting structure. The first concave-convex structure <NUM> includes a plurality of first grooves 1116a, the plurality of first grooves 1116a are fluidly coupled to the plurality of micropores <NUM>. The capillary force of the plurality of first grooves 1116a can guide the aerosol-generation substance from the plurality of micropores <NUM> into the plurality of first grooves 1116a, and a part of the heating film (the heating component <NUM>) is deposited in the plurality of first grooves 1116a. The plurality of first grooves 1116a crosses the microporous array region <NUM>. It should be understood that, compared with a case that the atomizing surface is a smooth surface, the atomizing surface <NUM> includes the plurality of first grooves 1116a, and the aerosol-generation substance may be stored in the plurality of first grooves 1116a, such that the area of the atomizing surface <NUM> is enlarged, and the contact area between the aerosol-generation substance and the heating film (the heating component <NUM>) is also enlarged, thereby enlarging the effective atomizing area and being conducive to improve the atomizing efficiency. In addition, since the plurality of first grooves 1116a have the capillary force, the aerosol-generation substance in the plurality of first grooves 1116a may not reflux to the liquid storage cavity <NUM>, and the aerosol-generation substance in the plurality of first grooves 1116a is directly atomized, such that repeated heating is avoided, and an aerosol reduction degree is relatively high. Moreover, since after the electronic atomizing device is stopped for a period, a certain amount of aerosol-generation substances may be stored in the plurality of first grooves 1116a, and dry burning may not occur even if the user inversely places the electronic atomizing device and inhales for several times during next use.

In some embodiments, the width of the first groove 1116a ranges from <NUM> to <NUM>. When the width of the first groove 1116a is greater than <NUM>, the capillary force of the plurality of first grooves 1116a is not strong, and the atomizing efficiency is not apparently improved. When the width of the first groove 1116a is less than <NUM>, the flow resistance is excessively great, such that the aerosol-generation substance flows slow.

In some embodiments, the width of the first groove 1116a is less than or equal to <NUM> times of the diameter of the micropores <NUM>, thereby ensuring that the capillary force of the plurality of first grooves 1116a meets a requirement.

In some embodiments, the depth of the first groove 1116a ranges from <NUM> to <NUM>. When the depth of the first groove 1116a is less than <NUM>, the capillary force of the plurality of first grooves 1116a is not strong, and the aerosol-generation substance in the plurality of micropores <NUM> can be hardly guided to the plurality of first grooves 1116a, thereby leading to dry burning in the plurality of first grooves 1116a. When the depth of the first groove 1116a is greater than <NUM>, e- liquid explosion may easily occur, the heating film (the heating component <NUM>) can be hardly formed in the plurality of first grooves 1116a. When the dense substrate <NUM> is quite thin and the depth of the first groove 1116a is excessively great, the intensity may be easily affected. In some embodiments, the depth of the first groove 1116a ranges from <NUM> to <NUM>, such that e-liquid explosion may be prevented and the particle size of aerosols may be prevented from being excessively great. When the particle size of aerosols needs to be greater, the depth of the first groove 1116a may range from <NUM> to <NUM>.

In some embodiments not covered by the subject-matter of the claims, the plurality of first grooves 1116a are defined parallel to each other, and the length direction of each of the plurality of first grooves 1116a is parallel to a first direction; and a first protruding bar 1116b is arranged between two adjacent first grooves 1116a (as shown in <FIG> is a structural schematic view of a first concave-convex structure according to an embodiment of the heating body provided in <FIG>). The first direction is a direction approaching the negative electrode <NUM> along the positive electrode <NUM>. The plurality of micropores <NUM> are defined in an array and the array includes a plurality of micropore rows parallel to the first direction, and each of the plurality of first grooves 1116a at least corresponds to one row of the plurality of micropores parallel to the first direction. In this case, the first concave-convex structure <NUM> includes a plurality of first grooves 1116a and a plurality of first protruding bars 1116b.

In some embodiments, the end openings of the plurality of micropores <NUM> that are away from the liquid absorbing surface <NUM> are all arranged on the bottom surfaces of the plurality of first grooves 1116a (as shown in <FIG>). Or the end openings of the plurality of micropores <NUM> that are away from the liquid absorbing surface <NUM> are all arranged on the end surfaces of the plurality of first protruding bars 1116b that are away from the liquid absorbing surface <NUM>. Or some of the end openings of the plurality of micropores <NUM> that are away from the liquid absorbing surface <NUM> are arranged on the bottom surfaces of the plurality of first grooves 1116a, and the other end openings of the plurality of micropores <NUM> that are away from the liquid absorbing surface <NUM> are arranged on the end surfaces of the plurality of first protruding bars 1116b that are away from the liquid absorbing surface <NUM>.

In some embodiments, an end opening of a micropore <NUM> that is away from the liquid absorbing surface <NUM> is arranged on a bottom surface of each of the plurality of first grooves 1116a (as shown in <FIG>). Or the end opening of the micropore <NUM> that is away from the liquid absorbing surface <NUM> is arranged on an end surface of each of the plurality of first protruding bars 1116b that is away from the liquid absorbing surface <NUM>. Or a part of the end opening of the micropore <NUM> that is away from the liquid absorbing surface <NUM> is arranged on the bottom surface of each of the plurality of first grooves 1116a, and the other part of the end opening of the micropore <NUM> that is away from the liquid absorbing surface <NUM> is arranged on the end surface of each of the plurality of first protruding bars 1116b that is away from the liquid absorbing surface <NUM>.

In some embodiments, the heating film includes a first part, a second part, and a third part. the first part of the heating film (the heating component <NUM>) is arranged on the side wall and the bottom wall of each of the plurality of first grooves 1116a, the second part is arranged on the end surface of each of the plurality of first protruding bars 1116b that is away from the liquid absorbing surface <NUM>, and the third part extends to the pore wall of a corresponding micropore <NUM>. Since the part of the heating film that is arranged on the side wall and/or the bottom wall of each of the plurality of first grooves 1116a is directly electrically connected to the positive electrode <NUM> and the negative electrode <NUM>, a current flows through the part of the heating film arranged on the side wall and/or the bottom wall of each of the plurality of first grooves 1116a, such that heat may be directly generated to heat the aerosol- generation substrate in the plurality of first grooves 1116a and the plurality of micropores <NUM>, thereby improving the energy utilization.

In another embodiment not covered by the subject-matter of the claims, the plurality of first grooves 1116a are defined parallel to each other, and the length direction of each of the plurality of first grooves 1116a is parallel to a second direction. A second protruding bar 1116c is arranged between two adjacent first grooves 1116a (as shown in <FIG> is a structural schematic view of a first concave-convex structure according to another embodiment of the heating body provided in <FIG>). The second direction intersects with the first direction. For example, an angle between the second direction and the first direction is <NUM> degrees. The plurality of micropores <NUM> are defined in an array and the array includes a plurality of micropore columns parallel to the second direction, and each of the plurality of first grooves 1116a at least corresponds to one row of the plurality of micropores parallel to the second direction. In this case, the first concave-convex structure <NUM> includes a plurality of first grooves 1116a and a plurality of second protruding bars 1116c. It should be understood that the angle between the second direction and the first direction is not limited to <NUM> degrees and may also be an acute angle or an obtuse angle.

In some embodiments, the end openings of the plurality of micropores <NUM> that are away from the liquid absorbing surface <NUM> are all arranged on the bottom surfaces of the plurality of first grooves 1116a (as shown in <FIG>). Or the end openings of the plurality of micropores <NUM> that are away from the liquid absorbing surface <NUM> are all arranged on the end surfaces of the plurality of second protruding bars 1116c that are away from the liquid absorbing surface <NUM>. or a some end openings of the plurality of micropores <NUM> that are away from the liquid absorbing surface <NUM> are arranged on the bottom surfaces of the plurality of first grooves 1116a, and the other end openings of the plurality of micropores <NUM> that are away from the liquid absorbing surface <NUM> are arranged on the end surfaces of the plurality of second protruding bars 1116c that are away from the liquid absorbing surface <NUM>.

In some embodiments, an end opening of a micropore <NUM> that is away from the liquid absorbing surface <NUM> is arranged on a bottom surface of each of the plurality of first grooves 1116a (as shown in <FIG>). Or the end opening of the micropore <NUM> that is away from the liquid absorbing surface <NUM> is arranged on an end surface of each of the plurality of second protruding bars 1116c that is away from the liquid absorbing surface <NUM>. Or a part of the end opening of the micropore <NUM> that is away from the liquid absorbing surface <NUM> is arranged on the bottom surface of each of the plurality of first grooves 1116a, and the other part of the end opening of the micropore <NUM> that is away from the liquid absorbing surface <NUM> is arranged on the end surface of each of the plurality of second protruding bars 1116c that is away from the liquid absorbing surface <NUM>.

In some embodiments, the heating film includes a first part, a second part, and a third part, the first part of the heating film (the heating component <NUM>) is arranged on the side wall and the bottom wall of each of the plurality of first grooves 1116a, the second part is arranged on the end surface of each of the plurality of second protruding bars 1116c that is away from the liquid absorbing surface <NUM>, and the third part extends to the pore wall of a corresponding micropore <NUM>. Since the part of the heating film that is arranged on the side wall and/or the bottom wall of each of the plurality of first grooves 1116a is directly electrically connected to the positive electrode <NUM> and the negative electrode <NUM>, a current flows through the part of the heating film arranged on the side wall and/or the bottom wall of each of the plurality of first grooves 1116a, such that heat may be directly generated to heat the aerosol-generation substance in the plurality of first grooves 1116a and the plurality of micropores <NUM>, thereby improving the energy utilization.

According to the invention, the concave-convex structure <NUM> include a plurality of first grooves 1116a extending along the first direction and a plurality of second grooves 1116e extending along the second direction, and the plurality of first grooves 1116a and the plurality of second grooves 1116e are defined in an intersecting manner. A bump 1116d is arranged between two adjacent first grooves 1116a and between two adjacent second grooves 1116e (as shown in <FIG> is a structural schematic view of a first concave-convex structure according to still another embodiment of the heating body provided in <FIG>). The first direction is a direction approaching the negative electrode <NUM> along the positive electrode <NUM>, and the second direction intersects with the first direction. For example, an angle between the second direction and the first direction is <NUM> degrees. In this case, the first concave-convex structure <NUM> includes a plurality of first grooves 1116a, a plurality of second grooves 1116e, and a plurality of bumps 1116d. It can be understood that, the angle between the second direction and the first direction is not limited to <NUM> degrees and may also be an acute angle or an obtuse angle. The plurality of first grooves 1116a and the plurality of second grooves 1116e are communicated in an intersecting manner to form a mesh structure.

In some embodiments, the end openings of the plurality of micropores <NUM> that are away from the liquid absorbing surface <NUM> are all arranged on the bottom surfaces of the plurality of first grooves 1116a (as shown in <FIG>). Or the end openings of the plurality of micropores <NUM> that are away from the liquid absorbing surface <NUM> are all arranged on the end surfaces of the plurality of bumps 1116d that are away from the liquid absorbing surface <NUM>. Or some of the end openings of the plurality of micropores <NUM> that are away from the liquid absorbing surface <NUM> are arranged on the bottom surfaces of the plurality of first grooves 1116a, and the other end openings of the plurality of micropores <NUM> that are away from the liquid absorbing surface <NUM> are arranged on the end surfaces of the plurality of bumps 1116d that are away from the liquid absorbing surface <NUM>.

In some embodiments, an end opening of a micropore <NUM> that is away from the liquid absorbing surface <NUM> is arranged on a bottom surface of each of the plurality of first grooves 1116a (as shown in <FIG>). Or the end opening of the micropore <NUM> that is away from the liquid absorbing surface <NUM> is arranged on an end surface of each of the plurality of bumps 1116d that is away from the liquid absorbing surface <NUM>. Or a part of the end opening of the same micropore <NUM> that is away from the liquid absorbing surface <NUM> is arranged on the bottom surface of each of the plurality of first grooves 1116a, and the other part of the end opening of the same micropore <NUM> that is away from the liquid absorbing surface <NUM> is arranged on the end surface of each of the plurality of bumps 1116d that is away from the liquid absorbing surface <NUM>.

In some embodiments, the plurality of first grooves 1116a cooperate with the plurality of second grooves 1116e to form a plurality of bumps 1116d arranged in an array. The plurality of micropores <NUM> are arranged in an array and the array includes a plurality of micropore rows parallel to the first direction and a plurality of micropore columns parallel to the second direction. An extending direction of each of the plurality of first grooves 1116a is parallel to the first direction, and each of the plurality of first grooves 1116a at least corresponds to one row of the plurality of micropores parallel to the first direction. An extending direction of each of the plurality of second grooves 1116e is parallel to the second direction, and each of the plurality of second grooves 1116e at least corresponds to one column of the plurality of micropores parallel to the second direction. The plurality of first grooves 1116a and the plurality of second grooves 1116e are communicated in an intersecting manner to form a mesh structure.

For example, the plurality of micropores <NUM> are arranged in an array. The end openings of the plurality of micropores <NUM> that are away from the liquid absorbing surface <NUM> are all arranged on the bottom surfaces of the plurality of first grooves 1116a. Each of the plurality of first grooves 1116a corresponds to one row of the plurality of micropores parallel to the first direction, and each of the plurality of second grooves 1116e corresponds to one column of the plurality of micropores parallel to the second direction. A plurality of rows of bumps 1116d and a plurality of rows of micropores <NUM> are arranged alternately, and a plurality of columns of bumps 1116d and a plurality of columns of micropores <NUM> are arranged alternately (as shown in <FIG>).

The heating film includes a first part, a second part, a third part, and a fourth part. The first part of the heating film (the heating component <NUM>) is arranged on a side wall and a bottom wall of each of the plurality of first grooves 1116a, the second part is arranged on a side wall and a bottom wall of each of the plurality of second grooves 1116e, the third part is arranged on the end surface of each of the plurality of bumps 1116d that is away from the liquid absorbing surface <NUM>, and the fourth part extends to a pore wall of a corresponding micropore <NUM> (as shown in <FIG>). Since the part of the heating film that is arranged on the side wall and/or the bottom wall of each of the plurality of first grooves 1116a is directly electrically connected to the positive electrode <NUM> and the negative electrode <NUM>, a current flows through the part of the heating film arranged on the side wall and/or the bottom wall of each of the plurality of first grooves 1116a, such that heat may be directly generated to heat the aerosol-generation substance in the plurality of first grooves 1116a and the plurality of micropores <NUM>, thereby improving the energy utilization.

It should be noted that, when the atomizing surface of the heating body is a smooth surface and a heating film is formed on the atomizing surface through a physical vapor deposition process, the heating film includes a plane heating film, an in-hole heating film, and a corner connection region heating film. The plane heating film is arranged on the atomizing surface, the in-hole heating film is arranged in each of the plurality of micropores, and the corner connection region heating film connects the plane heating film and the in-hole heating film. Through simulation analysis on potentials of the heating body when powered on, it is found that in this type of heating bodies, currents substantially flow through the plane heating film and the corner connection region heating film, and almost no current flows through the in-hole heating film. Therefore, it may be determined that a region where the heating body actually generates heat is the plane heating film and the corner connection region heating film, and the in-hole heating film is a heat conduction region. Through observation on the atomizing surface during atomization, it is found that substantially no e-liquid film is formed on the atomizing surface no matter the atomizing surface works or does not work, such that it is determined that the in-hole heating film is actually configured for atomizing. In the simulation analysis on the potentials of the heating body when powered on, the in-hole heating film is a heat conduction region, such that the energy utilization of the heating film is relatively low, which is intuitively presented as a small atomizing amount. In addition, it is found through adverse inference that heat dissipation is only performed on the in-hole heating film to implement heat dissipation on the entire heating film, such that a problem such as a risk of dry burning or burnout is synchronously caused.

In the present disclosure, a wetting structure is configured as the atomizing surface <NUM> of the dense substrate <NUM>. The atomizing surface <NUM> includes the first concave-convex structure <NUM>, and the heating film (the heating component <NUM>) is also formed on the side wall and the bottom wall of each of the plurality of first grooves 1116a of the first concave-convex structure <NUM>, such that the effective heating area of the heating component <NUM> is enlarged, thereby improving the energy utilization. A part of the aerosol-generation substance is guided by the plurality of first grooves 1116a to the grooves for atomization, thereby being conducive to improve the atomizing efficiency. Since atomization may be performed in the plurality of first grooves 1116a and the plurality of micropores <NUM> at the same moment, the aerosol-generation substance in the plurality of micropores may be effectively prevented from being emptied instantly due to excessive atomization in the plurality of micropores, and a sound of air-back of inhalation caused by intaking air may be effectively avoided. In addition, the contact area between the aerosol-generation substance and the heating component <NUM> is enlarged through the first concave-convex structure <NUM>, such that a heat dissipation area of the heating component <NUM> is enlarged, thereby effectively preventing dry burning.

The inventor further found that compared with a case that the atomizing surface is a smooth surface and the heating film is deposited on the smooth surface, the vaporization surface <NUM> being a wetting structure and the heating film being deposited on a coarse surface may apparently increases the atomizing amount. For example, the atomizing amount is increased from <NUM>/puff to <NUM>/puff. In addition, dirt accumulation is also apparently reduced, and the taste and sweetness of aerosols are also improved.

It should be understood that, a shape of a longitudinal section of each of the plurality of first grooves 1116a is a rectangle, a triangle, a circle, an arc, V/U, or Ω, which is specifically designed as required. The longitudinal section refers to a section along a direction perpendicular to the dense substrate <NUM>.

In other embodiments, the first concave-convex structure <NUM> on the atomizing surface <NUM> may cover a region on which the heating film (the heating component <NUM>) is arranged. Or the first concave-convex structure <NUM> on the atomizing surface <NUM> may only cover a part of the region on which the heating film (the heating component <NUM>) is arranged. Or the first concave-convex structure <NUM> on the atomizing surface <NUM> may cover a part of the region on which the heating film (the heating component <NUM>) is arranged and cover a part of the blank region <NUM>. In this way, the energy utilization of the heating component <NUM> may be improved to some extent.

In other embodiments, the atomizing surface <NUM> is configured as a frosted structure or a sandblasting structure to form a wetting structure, and same technical effects may be implemented when compared with the wetting structure formed by the first concave-convex structure <NUM> included by the atomizing surface <NUM>, which are not described herein again.

Referring to <FIG> is a structural schematic view of a heating body according to a second embodiment of the atomizer provided in <FIG>.

Structures of the heating body <NUM> provided in <FIG> and the heating body <NUM> provided in <FIG> are substantially the same, and a difference lies in different structures of the liquid absorbing surface <NUM> of the dense substrate <NUM>. For the same parts of the heating body <NUM>, details are not described herein again.

In this embodiment, the liquid absorbing surface <NUM> includes a second concave-convex structure <NUM>, and the second concave-convex structure <NUM> includes a plurality of third grooves 1117a; and for a specific arrangement manner of the second concave-convex structure <NUM>, reference may be made to the specific arrangement manner of the first concave-convex structure <NUM>, and details are not described herein again. The plurality of third grooves 1117a are fluidly coupled to the plurality of micropores <NUM>. Through arrangement of the plurality of third grooves 1117a, bubbles entering from the plurality of micropores <NUM> are prevented from being attached to the liquid absorbing surface <NUM> and growing up, thereby avoiding blocking liquid supplying of micropores <NUM> in a surrounding region.

The present disclosure further provides a heating body <NUM>. In this embodiment, a structure of the heating body <NUM> is substantially the same as the structure of the heating body <NUM> provided in <FIG>, and a difference lies in different structures of the heating component <NUM>. Specifically, the heating component <NUM> is a heating film, the heating film is a lipophilic structure and/or the surface of the heating film that is away from the dense substrate <NUM> includes a frosted structure or a sandblasting structure, such that a contact angle is small and the wettability is high, thereby being conducive to improve the energy utilization and the atomizing efficiency.

In a group of comparative experiments, in a case that other conditions remain unchanged, the dense substrate is quartz glass, the thickness of the dense substrate is <NUM>, the diameter of the micropore is <NUM>, a distance between two adjacent pores is <NUM>, the heating film is a thin film, and the power of the heating film is <NUM> W, the inventor performs atomizing amount comparison experiment on heating bodies (referring to <FIG>) whose atomizing surface is a smooth surface and whose atomizing surface is defined a plurality of grooves. The depth of the groove ranges from <NUM> to <NUM>, the width of the groove ranges from <NUM> to <NUM>, and a result indicates that the atomizing amount is increased from <NUM>/per inhalation to <NUM>/per inhalation. That is, in a case that other conditions remain unchanged, by defining grooves on the atomizing surface of the dense substrate and arranging a part of the heating component in the grooves, the thermal utilization and the atomizing amount may be greatly improved.

Referring to <FIG> is a structural schematic view of a heating body according to a third embodiment of the atomizer provided in <FIG>.

Structures of the heating body <NUM> provided in <FIG> and the heating body <NUM> provided in <FIG> are substantially the same, and a difference lies in that the heating body <NUM> provided in <FIG> further includes a first protective film <NUM> and a second protective film <NUM>. For the same parts of the two heating body, details are not described herein again.

The first protective film <NUM> is arranged on the surface of the heating component <NUM> that is away from the dense substrate <NUM>, and the material of the first protective film <NUM> is a non-conductive material which can resist corrosion of the aerosol-generation substance. The second protective film <NUM> is arranged on surfaces of the positive electrode <NUM> and the negative electrode <NUM> that are away from the dense substrate <NUM>, and the material of the second protective film <NUM> is a conductive material which can resist corrosion of the aerosol-generation substance. The first protective film <NUM> and the second protective film <NUM> effectively prevents corrosion of the aerosol-generation substance on the heating component <NUM>, the positive electrode <NUM>, and the negative electrode <NUM>, thereby being conducive to improve the service life of the heating body <NUM>.

In some embodiments, the material of the first protective film <NUM> is ceramic or glass. Since the material of the heating component <NUM> is metal, the thermal expansion coefficient of ceramic or glass matches the thermal expansion coefficient of the metal heating component <NUM>, and the adhesion of ceramic or glass matches the adhesion of the metal heating component <NUM>. Ceramic or glass is used as the first protective film <NUM>, such that the first protective film <NUM> can hardly fall off a heating portion <NUM>, such that the heating portion is well protected.

When the material of the first protective film <NUM> is ceramic, the material of the ceramic may be one or more of aluminum nitride, silicon nitride, aluminum oxide, silicon oxide, silicon carbide, or zirconium oxide, which is specifically selected as required.

In some embodiments, the thickness of the first protective film <NUM> ranges from <NUM> to <NUM>.

In some embodiments, the thickness of the second protective film <NUM> ranges from <NUM> to <NUM>.

In some embodiments, the material of the second protective film <NUM> is conductive ceramic or metal. Compared with a case that the first protective film <NUM> is made of a non-conductive material, the second protective film <NUM> is made of a conductive material, such that the second protective film <NUM> does not affect the electrical connection between the positive electrode <NUM> and the power supply assembly <NUM> and the electrical connection between the negative electrode <NUM> and the power supply assembly <NUM> while protecting the positive electrode <NUM> and the negative electrode <NUM> from corrosion of the aerosol-generation substance. Conductive ceramic or metal is used as the second protective film <NUM>, which is conducive to reduce contact resistance.

When the material of the second protective film <NUM> is conductive ceramic, the material of the conductive ceramic is one or more of titanium nitride and titanium diboride. It should be understood that conductive ceramic has better corrosion resistance of aerosol-generation substance than metal.

Referring to <FIG> is a structural schematic view of a heating body according to a fourth embodiment of the atomizer provided in <FIG>.

Structures of the heating body <NUM> provided in <FIG> and the heating body <NUM> provided in <FIG> are substantially the same, and a difference lies in that the heating body <NUM> provided in <FIG> further includes a liquid guiding member <NUM>. For the same parts of the two heating body, details are not described herein again.

In some embodiments, the material of the liquid guiding member <NUM> is a porous material, such as porous ceramic or a cotton core, etc..

In some embodiments, the material of the liquid guiding member <NUM> is dense, such as dense ceramic or glass, etc. In this case, a plurality of through holes (not shown in the drawing) are defined in the liquid guiding member <NUM>, and the plurality of through holes have the capillary force.

In some embodiments, the liquid guiding member <NUM> is in contact with the liquid absorbing surface <NUM> of the dense substrate <NUM> (as shown in <FIG>). The aerosol-generation substance is guided to the liquid absorbing surface <NUM> of the dense substrate <NUM> through the capillary force of the liquid guiding member <NUM>.

In some embodiments, the liquid guiding member <NUM> and the liquid absorbing surface <NUM> of the dense substrate <NUM> are arranged opposite to each other and spaced apart to form a gap (not shown in the drawing). The aerosol-generation substance is guided to the gap through the capillary force of the liquid guiding member <NUM>, and then enters the liquid absorbing surface <NUM> of the dense substrate <NUM>.

By arranging the liquid guiding member <NUM> on one side of the liquid absorbing surface <NUM> of the dense substrate <NUM>, a liquid supplying speed is further controlled.

Referring to <FIG> is a structural schematic view of a heating body according to a fifth embodiment of the atomizer provided in <FIG>.

Structures of the heating body <NUM> provided in <FIG> and the heating body <NUM> provided in <FIG> are substantially the same, and a difference lies in that a plurality of transverse holes <NUM> are further defined in the dense substrate <NUM> of the heating body <NUM>. For the same parts of the two heating body, details are not described herein again.

The plurality of transverse holes <NUM> fluidly couples the plurality of micropores <NUM>. The axis of each of the plurality of transverse holes <NUM> intersects with the axis of each of the plurality of micropores <NUM>. In some embodiments, the axis of each of the plurality of transverse holes <NUM> is perpendicular to the axis of each of the plurality of micropores <NUM>.

The plurality of micropores <NUM> and the plurality of transverse holes <NUM> form a mesh microfluidic channel, and bubbles may enter the plurality of micropores <NUM> during atomization. By defining the plurality of transverse holes <NUM>, bubbles entering the heating body <NUM> through adjacent micropores <NUM> may be prevented from being connected, namely, bubbles entering the heating body <NUM> through adjacent micropores <NUM> may be prevented from being growing up. In addition, even if the bubbles enter the liquid absorbing surface <NUM> from the atomizing surface <NUM> through the plurality of micropores <NUM>, are attached to the liquid absorbing surface <NUM>, and grow up to block some micropores <NUM>, the plurality of transverse holes <NUM> may supplement aerosol-generation substances to the blocked micropores <NUM>, such that e-liquid is supplied to the atomizing surface <NUM> in time, thereby preventing dry burning. The plurality of transverse holes <NUM> further have a liquid storage function, thereby avoiding burnout when the user inversely places the electronic atomizing device and inhales for at least two times.

Claim 1:
A heating body (<NUM>), applied to an electronic atomizing device (<NUM>) and configured to heat and atomize an aerosol-generation substance, and the heating body (<NUM>) comprising:
a dense substrate (<NUM>), comprising a liquid absorbing surface (<NUM>) and an atomizing surface (<NUM>) arranged opposite to each other;
wherein a plurality of micropores (<NUM>) are defined on the dense substrate (<NUM>), and the plurality of micropores (<NUM>) extend through from the liquid absorbing surface (<NUM>) to the atomizing surface (<NUM>), and the atomizing surface (<NUM>) is a wetting structure on which surface treatment is performed, and the wetting structure is fluidly coupled to the plurality of micropores (<NUM>);
wherein
the atomizing surface (<NUM>) comprises a first concave-convex structure (<NUM>) to form the wetting structure,
the first concave-convex structure (<NUM>) comprises a plurality of first grooves (1116a) and a plurality of second grooves (1116e), and the plurality of first grooves (1116a) and the plurality of second grooves (1116e) are fluidly coupled to the plurality of micropores (<NUM>); the plurality of first grooves (1116a) are defined parallel to each other, the length direction of the plurality of first grooves (1116a) is parallel to a first direction, the plurality of second grooves (1116e) are defined parallel to each other, the length direction of the plurality of second grooves (1116e) is parallel to a second direction; and a bump (1116d) is arranged between two adjacent first grooves (1116a) and between two adjacent second grooves (1116e); wherein the first direction intersects with the second direction;
it is characterized in that the heating body (<NUM>) further comprises a heating component (<NUM>), the heating component (<NUM>) comprises a first part, a second part, a third part, and a fourth part, the first part is arranged on the side wall and the bottom wall of each of the plurality of first grooves (1116a), the second part is arranged on the side wall and the bottom wall of each of the plurality of second grooves (1116e), the third part is arranged on an end surface of each of the plurality of bumps (1116d) that is away from the liquid absorbing surface (<NUM>), and the fourth part extends to the pore wall of a corresponding micropore (<NUM>).