Patent Description:
An electronic atomization device includes a heating body, a battery, a control circuit, and the like. The heating body is a core component of the electronic atomization device, and characteristics of the heating body decide an atomizing effect and use experience of the electronic atomization device.

An existing heating body is a cotton core heating body. Most cotton core heating bodies are in a structure of a spring-shaped metal heating wire wrapped on a cotton rope or a fiber rope. A to-be-atomized liquid aerosol-forming substrate is absorbed by two ends of the cotton rope or the fiber rope and then transmitted to the centered metal heating wire for heating and atomizing. Since an area of the end portion of the cotton rope or the fiber rope is limited, the absorption efficiency and the transmission efficiency of the aerosol-forming substrate are relatively low. In addition, the structure stability of the cotton rope or the fiber rope is poor. As a result, phenomena such as dry burning, carbon accumulation, and a burnt flavor are likely to occur after a plurality of thermal cycles.

Another existing heating body is a ceramic heating body. The ceramic heating body is generally a metal heating film formed on the surface of a porous ceramic body. The porous ceramic body plays a role of liquid guiding and liquid storage, and the liquid aerosol-forming substrate is heated and atomized by the metal heating film. However, it is hard for a porous ceramic manufactured through high-temperature sintering to accurately control the position distribution and size precision of micropores. To reduce a risk of liquid leakage, a hole diameter and a porosity need to be decreased, but to implement sufficient liquid supplying, the hole diameter and the porosity need to be increased, which conflict with each other. At present, with the hole diameter and the porosity meeting a condition of a low liquid leakage risk, a liquid guiding capability of a porous ceramic substrate is limited, and a burnt flavor is generated under a high-power condition.

As technologies advance, requirements of a user on the atomizing effect of the electronic atomization device become increasingly high. To meet the requirements of the user, a thin heating body is provided to improve a liquid supplying capability. However, bubbles are easily formed on a liquid absorbing surface of the thin heating body, which blocks liquid intaking and leads to dry burning of the heating body.

<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.

<CIT> discloses a manufacturing method of a heating element includes the following steps: providing a photosensitive glass substrate having multiple portions to be perforated; performing exposure processing on the portions of the photosensitive glass substrate; performing tempering on the photosensitive glass substrate at a high temperature of <NUM>-<NUM>; providing an etching solution to perform etching processing so as to remove the portions, and forming multiple elongated through-holes have capillary action, the through-holes extending through the photosensitive glass substrate; and arranging a heating layer on a surface of the photosensitive glass substrate.

The present disclosure provides a heating assembly, an atomizer, and an electronic atomization device, to solve the technical problem that bubbles are easily formed on a liquid absorbing surface of a thin heating body in the related art.

To resolve the foregoing technical problem, a first technical solution provided in the present disclosure is to provide a heating assembly, including a dense substrate including a liquid absorbing surface and an atomizing surface that are arranged opposite to each other. The dense substrate includes a plurality of vertical holes and a plurality of transverse holes, the plurality of vertical holes penetrate the liquid absorbing surface and the atomizing surface, and the plurality of transverse holes are in communication with the plurality of vertical holes. The ratio of a distance between centers of adjacent vertical holes to the hole diameter of each of the plurality of vertical holes ranges from <NUM>:<NUM> to <NUM>:<NUM>.

In some embodiments, the plurality of transverse holes include a plurality of first transverse holes extending in a first direction and a plurality of second transverse holes extending in a second direction, the second direction intersects with the first direction, and the first transverse holes and the second transverse holes are arranged in a same layers in the thickness direction of the dense substrate.

In some embodiments, the plurality of transverse holes include a plurality of first transverse holes extending in a first direction and a plurality of second transverse holes extending in a second direction, the second direction intersects with the first direction, and the first transverse holes and the second transverse holes are arranged in different layers in the thickness direction of the dense substrate.

In some embodiments, each of the plurality of vertical holes includes a first vertical hole segment close to the liquid absorbing surface and a second vertical hole segment close to the atomizing surface, and the hole diameter of the first vertical hole segment is different from the hole diameter of the second vertical hole segment.

In some embodiments, the hole diameter of the first vertical hole segment at an end opening of the liquid absorbing surface has a first value, the hole diameter of the second vertical hole segment at an end opening of the atomizing surface has a second value, and the first value is greater than the second value.

In some embodiments, in a direction from the atomizing surface to the liquid absorbing surface, the hole diameter of each of the plurality of vertical holes is gradually increased.

In some embodiments, the hole diameter of each of the plurality of vertical holes is consistent.

In some embodiments, the thickness of the dense substrate ranges from <NUM> to <NUM>.

In some embodiments, the hole diameter of each of the plurality of vertical holes ranges from <NUM> to <NUM>.

In some embodiments, the hole diameter of each of the plurality of transverse holes ranges from <NUM> to <NUM>.

In some embodiments, the ratio of the thickness of the dense substrate to the hole diameter of each of the plurality of vertical holes ranges from <NUM>:<NUM> to <NUM>:<NUM>.

In some embodiments, the heating assembly further includes a heating component disposed on the atomizing surface.

In some embodiments, the heating assembly further includes a positive electrode and a negative electrode. The dense substrate has a microporous array region and a blank region arranged surrounding a periphery of the microporous array region. The heating component is arranged in the microporous array region, and the positive electrode and the negative electrode are arranged in the blank region.

To resolve the foregoing technical solution, a second technical solution provided in the present disclosure is to provide an atomizer. The atomizer includes a liquid storage cavity and the above-mentioned heating assembly. The liquid storage cavity is configured to store an aerosol-forming substrate. The heating assembly is in fluid communication with the liquid storage cavity and configured to atomize the aerosol-forming substrate.

To resolve the foregoing technical solution, a third technical solution provided in the present disclosure is to provide an electronic atomization device. The electronic atomization device includes the above-mentioned atomizer and a main unit. The main unit is configured to supply electric energy for operation of the atomizer and control the heating assembly to atomize the aerosol-forming substrate.

The present disclosure provides the heating assembly, the atomizer, and the electronic atomization device. The heating assembly includes the dense substrate, and the dense substrate includes the liquid absorbing surface and the atomizing surface that are arranged opposite to each other. The dense substrate includes the plurality of vertical holes and the plurality of transverse holes. The plurality of vertical holes penetrate the liquid absorbing surface and the atomizing surface, and the plurality of transverse holes is in communication with the plurality of vertical holes, to prevent the bubbles from blocking liquid supplying through the plurality of transverse holes, thereby further preventing dry burning.

To describe the technical solutions in 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 a person of ordinary skill in the art may still derive other accompanying drawings from these accompanying drawings without creative efforts.

The technical solutions in 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 this application.

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

The terms "first", "second", and "third" in the present disclosure 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 indicate that at least one of such features is included. In the description of the present disclosure, "a plurality of" means at least two, such as two and three, etc., 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 the relative position relationship, movement situations, or the like between various components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications change accordingly. In the embodiments of the present disclosure, the terms "include", "have", and any variant thereof are intended to cover a 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 component 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 the present disclosure. 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 present disclosure is described in detail below with reference to the accompanying drawings and embodiments.

Referring to <FIG> is a schematic structural diagram of an electronic atomization device according to an embodiment of the present disclosure. In this embodiment, an electronic atomization device <NUM> is provided. The electronic atomization device <NUM> may be configured to atomize an aerosol-forming substrate. The electronic atomization device <NUM> includes an atomizer <NUM> and a main unit <NUM> that are electrically connected to each other.

The atomizer <NUM> is configured to store an aerosol-forming substrate and atomize the aerosol-forming substrate to form aerosols that can be inhaled by a user. The atomizer <NUM> specifically may be applied to different fields such as medical care, cosmetology, recreation inhalation, and so on. In a specific embodiment, the atomizer <NUM> may be applied to an electronic aerosol atomization device to atomize the aerosol-forming substrate and generate the aerosols for the user to inhale, and the following embodiments are described by using the recreation inhalation as an example. Certainly, in some other embodiments, the atomizer <NUM> may also be applied to a hair spray device to atomize hair spray used for hair styling. Alternatively, the atomizer <NUM> may be applied to a device treating upper and lower respiratory system diseases to atomize medicine.

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

The main unit <NUM> includes a battery (not shown in the figure) and a controller (not shown in the figure). The battery is configured to supply electric energy to the atomizer <NUM> for operation of the atomizer <NUM>, such that the atomizer <NUM> may atomize the aerosol-forming substrate to form the aerosols. The controller is configured to control the operation of the atomizer <NUM>. The main unit <NUM> further includes other components such as a battery holder, an airflow sensor, and so on.

The atomizer <NUM> and the main unit <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 schematic structural diagram of the atomizer according to an embodiment of the present disclosure.

The atomizer <NUM> includes a housing <NUM>, an atomization base <NUM>, and a heating assembly <NUM>. The housing <NUM> includes a liquid storage cavity <NUM> and an air outlet channel <NUM>. The liquid storage cavity <NUM> is configured to store a liquid aerosol-forming substrate, and the liquid storage cavity <NUM> surrounds the air outlet channel <NUM>. An inhaling port <NUM> is further defined on the end portion of the housing <NUM>, and the inhaling port <NUM> is in communication with the air outlet channel <NUM>. Specifically, one of the end openings of the air outlet channel <NUM> may be defined as the inhaling port <NUM>. A holding cavity <NUM> is defined on the housing <NUM> on the side of the liquid storage cavity <NUM> that is away from the inhaling port <NUM>, and the atomization base <NUM> is arranged in the holding cavity <NUM>. The atomization base <NUM> includes an atomization top base <NUM> and an atomization bottom base <NUM>. The atomization top base <NUM> cooperates with the atomization bottom base <NUM> to form an accommodating cavity <NUM>. That is, the atomization base <NUM> includes the accommodating cavity <NUM>. The heating assembly <NUM> is arranged in the accommodating cavity <NUM> and is arranged together with the atomization base <NUM> in the holding cavity <NUM>.

Two fluid channels <NUM> are arranged on the atomization top base <NUM>. Specifically, the two fluid channels <NUM> are arranged on the top wall of the atomization top base <NUM>, and the two fluid channels <NUM> are arranged on the two sides of the air outlet channel <NUM>, respectively. That is, one of the two fluid channels <NUM> is arranged on one of the two sides of the air outlet channel <NUM>, and the other of the two fluid channels <NUM> is arranged on the other of the two sides of the air outlet channel <NUM>. One of the ends of each of the fluid channels <NUM> is in communication with the liquid storage cavity <NUM>, and the other of the ends of each of the fluid channels <NUM> is in communication with the accommodating cavity <NUM>. That is, the fluid channels <NUM> is in communication with the liquid storage cavity <NUM> and the accommodating cavity <NUM>, so that the aerosol-forming substrate in the liquid storage cavity <NUM> enters into the heating assembly <NUM> through the two fluid channels <NUM>. That is, the heating assembly <NUM> is in fluid communication with the liquid storage cavity <NUM>, and the heating assembly <NUM> is configured to absorb, heat, and atomize the aerosol-forming substrate. The controller of the main unit <NUM> controls the heating assembly <NUM> to atomize the aerosol-forming substrate.

In this embodiment, the surface of the heating assembly <NUM> that is away from the liquid storage cavity <NUM> is an atomizing surface, an atomization cavity <NUM> is defined between the atomizing surface of the heating assembly <NUM> and the inner wall surface of the accommodating cavity <NUM>, and the atomization cavity <NUM> is in communication with the air outlet channel <NUM>. An air inlet <NUM> is defined on the atomization bottom base <NUM>, so that the atomization cavity <NUM> is in communication with the outside. External air enters the atomization cavity <NUM> through the air inlet <NUM>, carries the aerosols atomized by the heating assembly <NUM> to enter the air outlet channel <NUM>, and finally reaches the inhaling port <NUM> to be inhaled by the user.

The atomizer <NUM> further includes a conductor <NUM>, and the conductor <NUM> is fixed on the atomization bottom base <NUM>. One of the ends of the conductor <NUM> is electrically connected to the heating assembly <NUM>, and the other of the ends of the conductor <NUM> is electrically connected to the main unit <NUM>, so that the heating assembly <NUM> may work.

The atomizer <NUM> further includes a sealing top cap <NUM>. The sealing top cap <NUM> is arranged on the surface of the atomization top base <NUM> that is close to the liquid storage cavity <NUM>, and configured to implement sealing between the liquid storage cavity <NUM> and the atomization top base <NUM>, and between the liquid storage cavity <NUM> and the air outlet channel <NUM>, to prevent liquid leakage. Optionally, a material of the sealing top cap <NUM> is a silicone or a fluoro-rubber.

Referring to <FIG> is a schematic structural diagram of a heating assembly according to an embodiment of the present disclosure, <FIG> is a schematic structural diagram of the heating assembly shown in <FIG> from the side where a liquid absorbing surface is located, and <FIG> is a schematic perspective top structural view of the heating assembly shown in <FIG>.

The heating assembly <NUM> includes a dense substrate <NUM>, and the dense substrate <NUM> includes a liquid absorbing surface <NUM> and an atomizing surface <NUM> that are arranged opposite to each other. The dense substrate <NUM> includes a plurality of vertical holes <NUM> and a plurality of transverse holes <NUM>, the plurality of vertical holes <NUM> are through holes penetrating the liquid absorbing surface <NUM> and the atomizing surface <NUM>, and the plurality of transverse holes <NUM> are in communication with the plurality of vertical holes <NUM>. The plurality of transverse holes <NUM> cooperate with the plurality of vertical holes <NUM> to form a mesh-shaped microfluidic channel. Each of the vertical holes <NUM> includes a capillary force, and the aerosol-forming substrate is guided from the liquid absorbing surface <NUM> to the atomizing surface <NUM> through the vertical holes <NUM>. The mesh-shaped microfluidic channel may prevent bubbles from entering the liquid absorbing surface <NUM> from the atomizing surface <NUM>, and prevent bubbles entering through adjacent vertical holes <NUM> from being connected to each other, namely, prevent the bubbles from growing up. Meanwhile, even if bubbles enter the liquid absorbing surface <NUM> from the atomizing surface <NUM> through the vertical holes <NUM> and grow up when attached onto the liquid absorbing surface <NUM> to block some vertical holes <NUM>, the transverse holes <NUM> may supplement the aerosol-forming substrate to the blocked vertical holes <NUM>, to ensure in-time liquid supplying to the atomizing surface <NUM>, thereby preventing dry burning. The transverse holes <NUM> further plays a role of liquid storage, to ensure that the transverse holes may not be burnt out for at least two times of inverse inhalation.

A material of the dense substrate <NUM> is a glass, a dense ceramic, or a silicon. When the material of the dense substrate <NUM> is the glass, the glass may be one of a common glass, a quartz glass, a borosilicate glass, or a photosensitive lithium aluminosilicate glass. In a specific embodiment, the dense substrate <NUM> is the borosilicate glass. In another specific implementation, the dense substrate <NUM> is the photosensitive lithium aluminosilicate glass.

The dense substrate <NUM> may be in a shape of a plate, a cylinder, or an arc, which is specifically designed as required. For example, the dense substrate <NUM> of the heating assembly <NUM> shown in <FIG> is in the shape of the plate. The dense substrate <NUM> may be set to be in a regular shape, such as a rectangular plate shape, a circular plate shape, or the like. The plurality of vertical holes <NUM> are arranged in an array on the dense substrate <NUM>. That is, the plurality of vertical holes <NUM> are regularly arranged on the dense substrate <NUM>, and distances between centers of adjacent vertical holes <NUM> among the plurality of vertical holes <NUM> are the same.

Referring to <FIG> is a schematic structural diagram of the heating assembly shown in <FIG> from the side of where the atomizing surface is located.

In this embodiment, as shown in <FIG>, the heating assembly <NUM> further includes a heating component <NUM>, a positive electrode <NUM>, and a negative electrode <NUM>. The two ends of the heating component <NUM> are respectively electrically connected to the positive electrode <NUM> and the negative electrode <NUM>. That is, one of the two ends of the heating component <NUM> is electrically connected to the positive electrode <NUM>, and the other of the two ends of the heating component <NUM> is electrically connected to the negative electrode <NUM>. The positive electrode <NUM> and the negative electrode <NUM> are both arranged on the atomizing surface of the dense substrate <NUM> to be electrically connected to the main unit <NUM>. The heating component <NUM> may be a heating sheet, a heating film, or a heating mesh, provided that the aerosol-forming substrate may be heated and atomized. The heating component <NUM> may be arranged on the atomizing surface of the dense substrate <NUM> or may be buried inside the dense substrate <NUM>, which is specifically designed as required.

In another embodiment, the dense substrate <NUM> includes a conductive function and may generate heat by itself, such as a conductive ceramic generating heat by itself or a glass having a conductive function, and the heating component <NUM> does not need to be arranged in this case. That is, the heating component <NUM> is an optional structure.

In this embodiment, the plurality of vertical holes <NUM> are merely arranged on a part of the surface of the dense substrate <NUM> in an array arrangement manner. Specifically, the dense substrate <NUM> has a microporous array region <NUM> and a blank region <NUM> arranged surrounding a periphery of the microporous array region <NUM>. The microporous array region <NUM> includes the plurality of vertical holes <NUM>. The heating component <NUM> is arranged in the microporous array region <NUM>, to heat and atomize the aerosol-forming substrate. The positive electrode <NUM> and the negative electrode <NUM> are arranged in the blank region <NUM> of the atomizing surface <NUM>, to ensure the stability of the electrical connection between the positive electrode <NUM> and the negative electrode <NUM>.

By providing the microporous array region <NUM> and the blank region <NUM> provided surrounding the periphery of the microporous array region <NUM> on the dense substrate <NUM>, it may be understood that, no vertical hole <NUM> is arranged on the blank region <NUM>, thereby helping improve the intensity of the dense substrate <NUM> and reduce production costs. The microporous array region <NUM> in the dense substrate <NUM> is used as an atomizing region to cover the heating component <NUM> and a region around the heating component <NUM>, that is, regions reaching a temperature for atomizing the aerosol-forming substrate are basically covered, thereby fully utilizing the thermal efficiency.

It may 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 hole diameter of each of the vertical holes <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 the vertical holes <NUM> may be formed but no vertical hole <NUM> is formed, rather than a region around the microporous array region <NUM> and in which vertical holes <NUM> cannot be formed. In an embodiment, it is considered that the blank region <NUM> is arranged in a circumferential direction of the microporous array region <NUM> only when a gap between a vertical hole <NUM> that is closest to a touchline of the dense substrate <NUM> and the touchline of the dense substrate <NUM> is greater than the hole diameter of the vertical hole <NUM>.

The extending direction of the vertical hole <NUM> may be substantially parallel to the thickness direction of the dense substrate <NUM>, or may form an angle with the thickness direction of the dense substrate <NUM>. The angle ranges from <NUM> degrees to <NUM> degrees. The cross section of the vertical hole <NUM> may be in a shape of a circle, and a shape of the longitudinal section and the extending direction of the vertical hole <NUM> may be designed as required. In this embodiment, the vertical hole <NUM> is a through hole substantially parallel to the thickness direction of the dense substrate <NUM>. That is, the central axis of the vertical hole <NUM> is substantially perpendicular to the liquid absorbing surface <NUM>.

The hole diameter of each vertical hole <NUM> on the dense substrate <NUM> ranges from <NUM> to <NUM>. When the hole diameter of the vertical hole <NUM> is less than <NUM>, the liquid supplying requirement cannot be met, leading to a decrease in an amount of the aerosols. When the hole diameter of the each vertical hole <NUM> is greater than <NUM>, the aerosol-forming substrate may easily leak out from the vertical hole <NUM> to cause liquid leakage, leading to a decrease in the atomization efficiency. It may be understood that, the hole diameter of the vertical hole <NUM> is selected according to an actual requirement.

The hole diameter of each transverse hole <NUM> ranges from <NUM> to <NUM>. When the hole diameter of the transverse hole <NUM> is less than <NUM>, an effect of preventing the bubbles from entering the liquid absorbing surface <NUM> cannot be well implemented. When the hole diameter of the transverse hole <NUM> is greater than <NUM>, the aerosol-forming substrate may leak easily, and there is a risk that the bubbles are transversely merged to grow up. Optionally, the hole diameter of the each transverse hole <NUM> ranges from <NUM> to <NUM>. It may be understood that, the hole diameter of the transverse hole <NUM> is selected according to an actual requirement.

The thickness of the dense substrate <NUM> ranges from <NUM> to <NUM>. When the thickness of the dense substrate <NUM> is greater than <NUM>, the liquid supplying requirement cannot be met, leading to the decrease in the amount of the aerosols and a great heat loss. In addition, costs for providing the vertical holes <NUM> and the transverse holes <NUM> are high. 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 atomization device. Optionally, the thickness of the dense substrate <NUM> ranges from <NUM> to <NUM>. It may 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 hole diameter of the each vertical hole <NUM> ranges from <NUM>:<NUM> to <NUM>:<NUM>, to improve the liquid supplying capability. When the ratio of the thickness of the dense substrate <NUM> to the hole diameter of the vertical hole <NUM> is greater than <NUM>:<NUM>, the aerosol-forming substrate supplied through the capillary force of the each vertical hole <NUM> cannot met an atomization required amount of the heating component <NUM>, which easily leads to dry burning and the decrease in the amount of the aerosols generated in single atomization. When the ratio of the thickness of the dense substrate <NUM> to the hole diameter of the vertical hole <NUM> is less than <NUM>:<NUM>, the aerosol-forming substrate may easily leak out from the vertical hole <NUM> to cause a waster, leading to the decrease in the atomization efficiency and a decrease in a total amount of the aerosols. Optionally, the ratio of the thickness of the dense substrate <NUM> to the hole diameter of the vertical hole <NUM> ranges from <NUM>:<NUM> to <NUM>:<NUM>.

The ratio of a distance between centers of two adjacent vertical holes <NUM> to the hole diameter of the each vertical hole <NUM> ranges from <NUM>:<NUM> to <NUM>:<NUM>, so that the intensity of the dense substrate <NUM> is improved as much as possible in a case that the vertical holes <NUM> on the dense substrate <NUM> may meet the liquid supplying capability. In other implementations which are not covered by the scope of the claims, the ratio of the distance between centers of the two adjacent vertical holes <NUM> to the hole diameter of the each vertical hole <NUM> ranges from <NUM>:<NUM> to <NUM>:<NUM>. In further implementations which are not covered by the scope of the claims either, the ratio of the distance between centers of the two adjacent vertical holes <NUM> to the hole diameter of the each vertical hole <NUM> ranges from <NUM>:<NUM> to <NUM>:<NUM>.

Referring to <FIG> is a schematic structural diagram of the transverse holes and the vertical holes of the heating assembly shown in <FIG> according to an embodiment of the present disclosure.

In an embodiment, referring to <FIG> and <FIG>, the plurality of transverse holes <NUM> include a plurality of first transverse holes 1214a extending in a first direction and a plurality of second transverse holes 1214b extending in a second direction, the first direction intersects with the second direction, and the plurality of first transverse holes 1214a and the plurality of second transverse holes 1214b are provided in a same layer in the thickness direction of the dense substrate <NUM>. For example, the central axis of each of the plurality of first transverse holes 1214a and the central axis of each of the plurality of second transverse holes 1214b are approximately located in the same plane. Optionally, the first direction is substantially perpendicular to the second direction.

In another embodiment, the plurality of first transverse holes 1214a and the plurality of second transverse holes 1214b are arranged in different layers in the thickness direction of the dense substrate <NUM>. For example, the plurality of first transverse holes 1214a and the plurality of second transverse holes 1214b are arranged at intervals in the thickness direction of the dense substrate <NUM>. Compared with the arrangement manner in <FIG>, the plurality of first transverse holes 1214a and the plurality of second transverse holes 1214b are staggered in the thickness direction of the dense substrate <NUM>, which helps improve the intensity of the dense substrate <NUM>.

Referring to <FIG>, in this embodiment, the hole diameters of the plurality of vertical holes <NUM> are consistent in a direction from the atomizing surface <NUM> to the liquid absorbing surface <NUM>. The hole diameters of the plurality of transverse holes <NUM> are consistent in an extending direction of each of the plurality of transverse holes <NUM>. An angle between the central axis of the each of the plurality of transverse holes <NUM> and the central axis of each of the plurality of vertical holes <NUM> is greater than or equal to <NUM> degrees and less than or equal to <NUM> degrees. Optionally, the angle is <NUM> degrees. It may be understood that, the hole diameters of the plurality of vertical holes <NUM> may be the same as or may be different from each other, which are designed as required. The hole diameters of the plurality of transverse holes <NUM> may be the same as or may be different from each other, which are designed as required.

Referring to <FIG> is a schematic structural diagram of the transverse holes and the vertical holes of the heating assembly shown in <FIG> according to still another embodiment of the present disclosure, and <FIG> is a schematic structural diagram of the transverse holes and the vertical holes inside the heating assembly provided in <FIG> according to a further embodiment of the present disclosure.

In an embodiment, each of the plurality of vertical holes <NUM> includes a first vertical hole segment 1213a close to the liquid absorbing surface <NUM> and a second vertical hole segment 1213b close to the atomizing surface <NUM>, and the hole diameter of the first vertical hole segment 1213a is different from the hole diameter of the second vertical hole segment 1213b.

Specifically, the hole diameter of each of the plurality of vertical holes <NUM> at the end opening of the liquid absorbing surface <NUM> has a first value, the hole diameter of each of the plurality of vertical holes <NUM> at the end opening of the atomizing surface <NUM> has a second value, and the first value is greater than the second value. That is, the hole diameter of the first vertical hole segment 1213a at the end opening of the liquid absorbing surface <NUM> is greater than the hole diameter of the second vertical hole segment 1213b at the end opening of the atomizing surface <NUM>. Through the foregoing arrangement, contact between the bubbles and the hole wall of a part of each of the plurality of vertical holes <NUM> that is close to the liquid absorbing surface <NUM> may be reduced, which helps bubble separation.

In the direction from the atomizing surface <NUM> to the liquid absorbing surface <NUM>, the hole diameter of each of the plurality of vertical holes <NUM> is gradually increased. In an embodiment, the hole diameter of each of the plurality of vertical holes <NUM> is continuously increased. For example, the longitudinal section of each of the plurality of vertical holes <NUM> is in a shape of a trapezoid, namely, each of the plurality of vertical holes <NUM> is a cone-shaped hole. In another embodiment, as shown in <FIG>, the hole diameter of each of the plurality of vertical holes <NUM> is increased in a stepped manner. In this case, the first vertical hole segment 1213a and the second vertical hole segment 1213b each have an equal or constant diameter, and by setting the hole diameter of the second vertical hole segment 1213b to be less than the hole diameter of the first vertical hole segment 1213a, the contact between the bubbles and the hole wall is reduced, which helps bubble separation. In still another implementation, the first vertical hole segment 1213a may be in a shape of a funnel. The hole diameter of an end opening of the first vertical hole segment 1213a close to the second vertical hole segment 1213b is substantially equal to the hole diameter of the second vertical hole segment 1213b, and the hole diameter of another part of the first vertical hole segment 1213a is greater than the hole diameter of the second vertical hole segment 1213b, thereby reducing the contact between the bubbles and the hole wall, and helping bubble separation. For example, as shown in <FIG>, the first vertical hole segment 1213a is in a shape of a truncated cone, and the second vertical hole segment 1213b is in a shape of a cylinder.

It may be understood that, each of the plurality of transverse holes <NUM> may be a diameter-equal hole or may be a cone-shaped hole, provided that transverse liquid supplying may be implemented and the bubble discharge can be facilitated, which is specifically designed as required.

Claim 1:
A heating assembly (<NUM>), comprising:
a dense substrate (<NUM>) comprising a liquid absorbing surface (<NUM>) and an atomizing surface (<NUM>) that are arranged opposite to each other, wherein the dense substrate (<NUM>) comprises a plurality of vertical holes (<NUM>) and a plurality of transverse holes (<NUM>), the plurality of vertical holes (<NUM>) penetrate the liquid absorbing surface (<NUM>) and the atomizing surface (<NUM>), and the plurality of transverse holes (<NUM>) are in communication with the plurality of vertical holes (<NUM>);
characterized in that the ratio of a distance between centers of adjacent vertical holes (<NUM>) to the hole diameter of each of the plurality of vertical holes (<NUM>) ranges from <NUM>:<NUM> to <NUM>:<NUM>.