CN116406861A

CN116406861A - Heating element, atomizer and electronic atomizing device

Info

Publication number: CN116406861A
Application number: CN202211387650.7A
Authority: CN
Inventors: 樊文远; 赵月阳; 龚博学; 张彪; 吕铭
Original assignee: Shenzhen Smoore Technology Ltd
Current assignee: Shenzhen Smoore Technology Ltd
Priority date: 2021-12-30
Filing date: 2022-11-07
Publication date: 2023-07-11
Also published as: CN218921698U

Abstract

The application discloses a heating element, an atomizer and an electronic atomization device, wherein the heating element comprises a compact matrix which is integrally formed; the compact substrate is provided with a liquid suction surface and an atomization surface which are oppositely arranged; along the thickness direction of the compact substrate, a plurality of layers of micropore groups and a runner positioned in the compact substrate are arranged on the compact substrate; each layer of micropore group comprises a plurality of micropores, and the micropores extend along the direction from the liquid absorption surface to the atomization surface; micropores of micropore groups of two adjacent layers are arranged in a non-aligned manner; the extending direction of the flow channel is crossed with the extending direction of the micropores, so that two adjacent micropore groups are communicated through the flow channel. The micropores of the micropore groups of two adjacent layers are arranged in a non-aligned mode, so that the local resistance of the movement of the bubbles to the liquid absorption surface is increased, and the speed of the movement of the bubbles to the liquid absorption surface is reduced; meanwhile, the flow channel induces bubbles to flow in the flow channel, so that the bubbles are easily discharged from the atomization surface or are induced to a non-atomization area, the influence of the bubbles on liquid supply is reduced, the liquid supply is ensured to be sufficient, and dry burning is avoided.

Description

Heating element, atomizer and electronic atomizing device

Technical Field

The application relates to the technical field of atomization, in particular to a heating element, an atomizer and an electronic atomization device.

Background

The electronic atomization device consists of a heating element, a battery, a control circuit and the like, wherein the heating element is used as a core element of the electronic atomization device, and the characteristics of the heating element determine the atomization effect and the use experience of the electronic atomization device.

One of the existing heating elements is a cotton core heating element. Most of the cotton core heating elements are structures of spring-shaped metal heating wires wound with cotton ropes or fiber ropes. The liquid aerosol generating substrate to be atomized is sucked by two ends of the cotton rope or the fiber rope and then is conveyed to a central metal heating wire for heating and atomizing. Because the end area of the cotton rope or the fiber rope is limited, the aerosol generating substrate is low in adsorption and transmission efficiency, and the risk of dry combustion caused by insufficient liquid supply exists.

The other of the existing heating bodies is a ceramic heating body. Most of ceramic heating elements form a metal heating film on the surface of a porous ceramic body; the porous ceramic body plays roles of liquid guiding and liquid storage, and the metal heating film realizes heating and atomizing of the liquid aerosol generating substrate. However, it is difficult to precisely control the positional distribution and dimensional accuracy of micropores of the porous ceramic prepared by high-temperature sintering. In order to reduce the risk of leakage of liquid, it is necessary to reduce the pore size and the porosity, but in order to achieve sufficient liquid supply, it is necessary to increase the pore size and the porosity, which are contradictory. At present, under the conditions of pore diameter and porosity meeting the low leakage risk, the liquid guiding capacity of the porous ceramic matrix is limited, and burnt smell can occur under the high power condition.

Along with the progress of technology, users have increasingly demanded atomizing effect of electronic atomizing devices, and in order to meet the demands of users, a thin heating element is provided to improve the liquid supply capability. However, bubbles are easily adhered to the liquid suction surface of the thin heating body in the atomization process, so that insufficient liquid supply is caused, and dry heating occurs.

Disclosure of Invention

The application provides a heat-generating body, atomizer and electron atomizing device solves the easy adhesion bubble of imbibition face of heat-generating body among the prior art, leads to the problem that supplies liquid inadequately.

In order to solve the technical problem, the first technical scheme provided by the application is as follows: the heating body is applied to an electronic atomization device and used for atomizing an aerosol generating substrate, and comprises an integrally formed compact substrate, wherein the compact substrate is provided with a liquid suction surface and an atomization surface which are oppositely arranged; along the thickness direction of the compact substrate, a plurality of layers of micropore groups and a runner positioned in the compact substrate are arranged on the compact substrate; each layer of the micropore group comprises a plurality of micropores, and the micropores extend along the direction from the liquid suction surface to the atomization surface; the micropores of the micropore groups of two adjacent layers are arranged in a non-aligned manner; the extending direction of the runner is intersected with the extending direction of the micropores, so that two adjacent micropore groups are communicated through the runner.

In one embodiment, the micropores of the plurality of layers of the micropore group have progressively increasing capillary action in a direction from the liquid suction surface to the atomizing surface.

In one embodiment, the dense substrate is provided with two layers of micropore groups, namely a first layer of micropore group comprising a plurality of first micropores and a second layer of micropore group comprising a plurality of second micropores; the port of the first micropore far away from the second layer micropore group is positioned on the atomization surface, and the port of the second micropore far away from the first layer micropore group is positioned on the liquid absorption surface; one end of the first micropore close to the second layer micropore group is communicated with one end of the second micropore close to the first layer micropore group through the runner.

In one embodiment, the width of the first micro-hole is 5 to 100 micrometers, the width of the second micro-hole is 10 to 200 micrometers, and the width of the second micro-hole is not less than the width of the first micro-hole.

In one embodiment, the cross-sectional shape of the first micro-hole is circular, and the cross-sectional shape of the second micro-hole is elongated; the width of the second micropores is not smaller than the diameter of the first micropores.

In one embodiment, the second micropores have the same width as the diameter of the first layer micropores.

In an embodiment, the first micro hole is a first blind hole formed on the atomization surface, and an axis of the first blind hole is parallel to a thickness direction of the compact substrate; the second micropore is a second blind hole arranged on the liquid suction surface, and the axis of the second blind hole is parallel to the thickness direction of the compact substrate;

the runner penetrates through bottoms of the first blind hole and the second blind hole so that the first blind hole is communicated with the second blind hole.

In an embodiment, the wall surface of the runner near the side of the second blind hole is spaced from the bottom surface of the first blind hole, and the wall surface of the runner near the side of the first blind hole is spaced from the bottom surface of the second blind hole;

or the wall surface of the runner, which is close to one side of the second blind hole, is flush with the bottom surface of the first blind hole, and the wall surface of the runner, which is close to one side of the first blind hole, is flush with the bottom surface of the second blind hole;

or the wall surface of the runner, which is close to one side of the second blind hole, is flush with the bottom surface of the first blind hole, and the wall surface of the runner, which is close to one side of the first blind hole, is arranged at intervals with the bottom surface of the second blind hole;

or, the wall surface of the runner, which is close to one side of the second blind hole, is arranged at intervals with the bottom surface of the first blind hole, and the wall surface of the runner, which is close to one side of the first blind hole, is flush with the bottom surface of the second blind hole.

In an embodiment, the wall surface of the runner near the side of the second blind hole is spaced from the bottom surface of the first blind hole, and the wall surface of the runner near the side of the first blind hole is spaced from the bottom surface of the second blind hole; the aperture of the first blind hole is gradually increased, and the aperture of the second blind hole is gradually decreased along the direction from the liquid suction surface to the atomization surface.

In one embodiment, the flow channel is an integral gap, and all the micropores of two adjacent micropore groups are communicated with the gap;

or, the flow channel comprises a plurality of first sub-flow channels which are arranged at intervals and extend along the first direction;

or, the flow channel comprises a plurality of second sub-flow channels which are arranged at intervals and extend along the second direction;

or, the flow channel comprises a plurality of first sub-flow channels which are arranged at intervals and extend along the first direction and a plurality of second sub-flow channels which are arranged at intervals and extend along the second direction, and the first sub-flow channels and the second sub-flow channels are arranged in a crossing way and are mutually communicated.

In an embodiment, along the extending direction of the flow channel, the flow channel includes a plurality of center points, and the plurality of center points are located on the same plane or on a plurality of planes.

In one embodiment, a plurality of the central points are located on the same plane, which is parallel to or forms an angle with the atomizing surface.

In one embodiment, the dense substrate is provided with two layers of micropore groups, namely a first layer of micropore group comprising a plurality of first micropores and a second layer of micropore group comprising a plurality of second micropores; the port of the first micropore far away from the second layer micropore group is positioned on the atomization surface, and the port of the second micropore far away from the first layer micropore group is positioned on the liquid absorption surface; one end of the first micropore close to the second layer micropore group is communicated with one end of the second micropore close to the first layer micropore group through the runner;

the runner comprises a plurality of first sub-runners which are arranged at intervals and extend along a first direction and a plurality of second sub-runners which are arranged at intervals and extend along a second direction, and the first sub-runners and the second sub-runners are arranged in a crossing mode and are mutually communicated.

In one embodiment, the cross-sectional shape of the first micro-hole is circular, and the cross-sectional shape of the second micro-hole is elongated.

In one embodiment, the first microwells have a diameter of 10 microns to 100 microns; the width of the second micropore is 10 micrometers to 100 micrometers, and the length of the second micropore is more than 100 micrometers.

In one embodiment, the diameter of the first microwells is the same as the width of the second microwells; and/or the diameter of the first micropore is the same as the width of each of the first sub-runner and the second sub-runner.

In an embodiment, the orthographic projection of the first micro-hole on the runner is located at the intersection of the first sub-runner and the second sub-runner, and the orthographic projection of the second micro-hole on the runner is located between two adjacent first sub-runners and spans across a plurality of second sub-runners.

In one embodiment, the first micropores are arranged in a two-dimensional array, and the orthographic projection of each row of the first micropores on the runner is located on one first sub-runner, and the orthographic projection of each column of the first micropores on the runner is located on one second sub-runner;

along the extending direction of the second sub-flow passage, only one row of second micropores is arranged between two adjacent first sub-flow passages.

In an embodiment, the orthographic projection of the first micro-holes of the odd rows in the first layer micro-hole group on the flow channel is positioned at the intersection of the first sub-flow channel and the second sub-flow channel, and the orthographic projection of the first micro-holes of the even rows in the first layer micro-hole group on the flow channel is positioned on the first sub-flow channel and between two adjacent second sub-flow channels;

The orthographic projection of the second micropores of the second layer micropore group on the runner is positioned on the second sub-runner and between two adjacent first sub-runners.

In one embodiment, the cross-sectional shape of the first microwell and the cross-sectional shape of the second microwell are both circular.

In one embodiment, the diameter of the second microwells is greater than the diameter of the first microwells; and/or the diameter of the first micropore is the same as the width of the first sub-runner.

In an embodiment, the orthographic projection of the second micro-hole on the flow channel is positioned at the intersection of the first sub-flow channel and the second sub-flow channel;

the orthographic projection of one second micropore on the runner is partially overlapped with the orthographic projection of four first micropores on the runner, and the orthographic projections of the four first micropores which are partially overlapped with the orthographic projection of the same second micropore on the runner are distributed along the periphery of the orthographic projection of the same second micropore on the runner.

In an embodiment, the first micropores and the second micropores are arranged in a two-dimensional array;

Orthographic projections of two adjacent rows of first micropores on the flow channel are overlapped with the same first sub-flow channel part; orthographic projections of two adjacent rows of first micropores on the flow channel are overlapped with the same second sub-flow channel part.

In one embodiment, the cross-sectional shape of the first micro-hole is an elongated shape, and the cross-sectional shape of the second micro-hole is a circular shape.

In one embodiment, the diameter of the second microwells is greater than the width of the first microwells; and/or the diameter of the second micropore is larger than the respective widths of the first sub-runner and the second sub-runner.

In an embodiment, the orthographic projection of the first micro-hole on the flow channel is located on the first sub-flow channel or the second sub-flow channel;

the orthographic projection of one second micropore on the runner is partially overlapped with orthographic projections of three first micropores on the runner, and the central connecting lines of the three first micropores form triangles; one first micropore is arranged between two adjacent triangles.

In an embodiment, the first micropores are arranged in a two-dimensional array, and two adjacent rows of the first micropores are arranged in a staggered manner; the second micropores are distributed in a two-dimensional array; each second micropore is respectively overlapped with the orthographic projection of one first micropore of the odd lines and two adjacent first micropores of the even lines on the runner.

In an embodiment, the cross-sectional shape of the first microwell and the cross-sectional shape of the second microwell are both circular, the diameter of the second microwell being greater than the diameter of the first microwell; and/or the diameter of the first micropore is the same as the width of each of the first sub-runner and the second sub-runner.

In an embodiment, the width of the first sub-flow channel and the second sub-flow channel is not smaller than the width of the first micro-hole and not larger than the width of the second micro-hole; and/or the heights of the first sub-runner and the second sub-runner are 10 micrometers-150 micrometers.

In one embodiment, the flow channels divide the dense matrix into a first layer of dense matrix having the first layer of microwell groups and a second layer of dense matrix having the second layer of microwell groups; the thickness of the first layer compact matrix is 0.1mm-1mm, and the thickness of the second layer compact matrix is not greater than the thickness of the first layer compact matrix.

In one embodiment, the device further comprises a heating element, wherein the heating element is arranged on the atomization surface.

In one embodiment, the material of the dense matrix is one of glass, dense ceramic and sapphire.

In one embodiment, the material of the dense matrix has a thermal conductivity of less than 5W/(m·k).

In one embodiment, the axis of the micropores of each layer of the micropore group is parallel to the thickness direction of the dense substrate; and/or, a plurality of micropores of each layer of the micropore group are arranged in an array.

In one embodiment, the liquid suction surface and the atomizing surface are parallel; the axis of the micropore is perpendicular to the liquid suction surface, and the flow channel is parallel to the liquid suction surface.

In one embodiment, the cross-sectional shape of the micropores of each layer of the micropore group is one of a circle and an elongated shape;

the cross-sectional shapes of the micropores of the micropore groups of different layers are the same or different.

In order to solve the technical problem, the second technical scheme provided by the application is as follows: providing an atomizer, comprising a liquid storage cavity and a heating body; the reservoir is for storing a liquid aerosol-generating substrate; the heating element is any one of the heating elements, the heating element is in fluid communication with the liquid storage cavity, and the heating element is used for atomizing the aerosol generating substrate.

In order to solve the technical problem, a third technical scheme provided by the application is as follows: the electronic atomization device comprises an atomizer and a host, wherein the atomizer is the atomizer, and the host is used for providing electric energy for the operation of the heating element and controlling the heating element to atomize the aerosol generating substrate.

The beneficial effects of this application: different from the prior art, the application discloses a heating element, an atomizer and an electronic atomization device, wherein the heating element comprises an integrally formed compact matrix; the compact substrate is provided with a liquid suction surface and an atomization surface which are oppositely arranged; along the thickness direction of the compact substrate, a plurality of layers of micropore groups and a runner positioned in the compact substrate are arranged on the compact substrate; each layer of micropore group comprises a plurality of micropores, and the micropores extend along the direction from the liquid absorption surface to the atomization surface; micropores of micropore groups of two adjacent layers are arranged in a non-aligned manner; the extending direction of the flow channel is crossed with the extending direction of the micropores, so that two adjacent micropore groups are communicated through the flow channel. The micropores of the micropore groups of two adjacent layers are arranged in a non-aligned mode, so that the local resistance of the movement of the bubbles to the liquid suction surface is increased, the speed of the movement of the bubbles to the liquid suction surface is reduced, and the influence of the bubbles on liquid supply is reduced; meanwhile, the flow channel induces bubbles to flow in the flow channel, so that the bubbles are easily discharged from the atomization surface or are induced to a non-atomization area, the influence of the bubbles on liquid supply is further reduced, the liquid supply is ensured to be sufficient, and dry burning is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an electronic atomization device according to an embodiment of the present application;

FIG. 2 is a schematic diagram of the atomizer of the electronic atomizing device provided in FIG. 1;

FIG. 3a is a schematic view showing the structure of a first embodiment of a heating element provided in the present application;

FIG. 3b is a schematic diagram showing another positional relationship between the first and second micro-holes in the heat-generating body shown in FIG. 3 a;

FIG. 4 is a schematic view showing the structure of a further positional relationship between the first and second micro-holes in the heat-generating body shown in FIG. 3 a;

FIG. 5 is a schematic diagram showing the flow of bubbles within the heat generator shown in FIG. 3 b;

FIG. 6 is a schematic diagram of the flow of bubbles within a heat generator having micropores as through holes;

FIG. 7 is a schematic view showing the structure of another embodiment of the flow channel of the heat-generating body shown in FIG. 3 a;

FIG. 8 is a schematic view showing the structure of a flow channel of the heat-generating body shown in FIG. 3a in accordance with another embodiment;

FIG. 9a is a schematic view showing the structure of a flow channel of the heat-generating body shown in FIG. 3a according to still another embodiment;

FIG. 9b is a schematic view showing the structure of a flow channel of the heat-generating body shown in FIG. 3a according to still another embodiment;

FIG. 9c is a schematic view showing the structure of a flow channel of the heat-generating body shown in FIG. 3a according to still another embodiment;

FIG. 10 is a schematic view showing the structure of a first embodiment of the projection of the first and second micro-holes of the heat-generating body shown in FIG. 3a onto the flow channel;

FIG. 11 is a schematic structural view of a second embodiment of the projection of the first and second micro-holes of the heat-generating body shown in FIG. 3a onto the flow channel;

FIG. 12 is a schematic structural view of a third embodiment of the projection of the first and second micro-holes of the heat-generating body shown in FIG. 3a onto the flow channel;

FIG. 13 is a schematic view showing the structure of a fourth embodiment of the projection of the first and second micro-holes of the heat-generating body shown in FIG. 3a onto the flow channel;

FIG. 14 is a schematic view showing the structure of a second embodiment of a heat-generating body provided in the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, interfaces, techniques, etc., in order to provide a thorough understanding of the present application.

The terms "first," "second," "third," and the like in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may include at least one such feature, either explicitly or implicitly. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement conditions, etc. between the components under a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is correspondingly changed. The terms "comprising" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may alternatively include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The present application is described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic atomization device according to an embodiment of the present application.

In the present embodiment, an electronic atomizing device 100 is provided. The electronic atomizing device 100 may be used for atomizing an aerosol-generating substrate. The electronic atomizing device 100 includes an atomizer 1 and a main body 2 electrically connected to each other.

Wherein the atomizer 1 is for storing an aerosol-generating substrate and atomizing the aerosol-generating substrate to form an aerosol for inhalation by a user. The atomizer 1 is particularly useful in different fields, such as medical, cosmetic, leisure, and the like. In one embodiment, the atomizer 1 may be used in an electronic aerosolization device for atomizing an aerosol-generating substrate and generating an aerosol for inhalation by a smoker, the following embodiments taking this leisure inhalation as an example.

The specific structure and function of the atomizer 1 can be referred to as the specific structure and function of the atomizer 1 according to the following embodiments, and the same or similar technical effects can be achieved, which are not described herein.

The host 2 includes a battery (not shown) and a controller (not shown). The battery is used to provide electrical energy for the operation of the atomizer 1 to enable the atomizer 1 to atomize an aerosol-generating substrate to form an aerosol; the controller is used for controlling the atomizer 1 to work. The host 2 also includes other components such as a battery holder, an airflow sensor, and the like.

The atomizer 1 and the host machine 2 can be integrally arranged, can be detachably connected, and can be designed according to specific needs.

Referring to fig. 2, fig. 2 is a schematic structural diagram of an atomizer of the electronic atomization device provided in fig. 1.

The atomizer 1 comprises a housing 10, a heating element 11 and an atomizing base 12. The atomizing base 12 has an installation cavity (not shown), and the heating element 11 is arranged in the installation cavity; the heating element 11 is provided in the housing 10 together with the atomizing base 12. The housing 10 is formed with a mist outlet channel 13, and the inner surface of the housing 10, the outer surface of the mist outlet channel 13 and the top surface of the mist outlet seat 12 cooperate to form a liquid storage cavity 14, the liquid storage cavity 14 being for storing a liquid aerosol-generating substrate. Wherein the heating element 11 is electrically connected to the host 2 to atomize the aerosol-generating substrate to generate an aerosol.

The atomizing base 12 comprises an upper base 121 and a lower base 122, and the upper base 121 and the lower base 122 are matched to form a mounting cavity; the surface of the heating body 11 facing away from the liquid storage cavity 14 is matched with the cavity wall of the installation cavity to form an atomization cavity 120. The upper seat 121 is provided with a lower liquid channel 1211; the aerosol-generating substrate passageway lower liquid channel 1211 within the liquid storage chamber 14 flows into the heater 11, i.e., the heater 11 is in fluid communication with the liquid storage chamber 14. The lower seat 122 is provided with an air inlet channel 15, external air enters the atomization cavity 120 through the air inlet channel 15, atomized aerosol carrying the heating body 11 flows to the mist outlet channel 13, and a user sucks the aerosol through a port of the mist outlet channel 13.

Referring to fig. 3a to 13, fig. 3a is a schematic structural view of a first example of the heating element provided in the present application, fig. 3b is a schematic structural view of another positional relationship between the first micro-hole and the second micro-hole in the heating element shown in fig. 3a, fig. 4 is a schematic structural view of another positional relationship between the first micro-hole and the second micro-hole in the heating element shown in fig. 3a, fig. 5 is a schematic structural view of air bubbles flowing in the heating element shown in fig. 3b, fig. 6 is a schematic structural view of another embodiment of the flow channel of the heating element shown in fig. 3a, fig. 8 is a schematic structural view of another embodiment of the flow channel of the heating element shown in fig. 3a, fig. 9a is a schematic structural view of another embodiment of the flow channel of the heating element shown in fig. 3a, fig. 9b is a schematic structural view of a further embodiment of the flow channel of the heat generating body shown in fig. 3a, fig. 9c is a schematic structural view of a further embodiment of the flow channel of the heat generating body shown in fig. 3a, fig. 10 is a schematic structural view of a first embodiment of projection of the first and second micro holes of the heat generating body shown in fig. 3a onto the flow channel, fig. 11 is a schematic structural view of a second embodiment of projection of the first and second micro holes of the heat generating body shown in fig. 3a onto the flow channel, fig. 12 is a schematic structural view of a third embodiment of projection of the first and second micro holes of the heat generating body shown in fig. 3a onto the flow channel, and fig. 13 is a schematic structural view of a fourth embodiment of projection of the first and second micro holes of the heat generating body shown in fig. 3a onto the flow channel.

The heat-generating body 11 includes a compact base 111 integrally formed. The compact substrate 111 is integrally formed, and is convenient to assemble. Dense substrate 111 has oppositely disposed wicking surface 1111 and atomizing surface 1112. Along the thickness direction of the dense substrate 111, a plurality of micropore groups 1113 and flow passages 1114 located inside the dense substrate 111 are provided on the dense substrate 111. Each layer of microwell set 1113 includes a plurality of microwells 1113a, the microwells 1113a extending in a direction from the liquid-absorbing surface 1111 toward the atomizing surface 1112. The extending direction of the flow passage 1114 intersects with the extending direction of the micro-holes 1113a, so that the adjacent two-layer micro-hole groups 1113 communicate through the flow passage 1114. The micropores 1113a of the micropore group 1113 of the adjacent two layers are disposed in a non-aligned manner.

The dense substrate 111 is a sheet-like substrate, the sheet-like is relative to the block-like body, and the ratio of the length of the sheet-like to the thickness of the block-like body is large; for example, the dense substrate 111 has a flat plate shape (as shown in fig. 3a to 9 c), an arc shape, a cylindrical shape, or the like. When the dense matrix 111 is arc-shaped and cylindrical, other structures in the atomizer 1 are matched with the specific structure of the dense matrix 111. When the dense substrate 111 is arc-shaped, the length refers to the arc length thereof; when the dense base 111 is cylindrical, the length refers to the circumference thereof.

For current cotton core heat-generating body and porous ceramic heat-generating body, the liquid supply passageway of the heat-generating body 11 of this kind of lamellar structure that this application provided is shorter, and the liquid supply speed is faster, does benefit to the assurance and supplies liquid sufficient, avoids dry combustion method.

The aerosol-generating substrate enters the micropores 1113a of the micropore group 1113 nearest to the liquid absorbing surface 1111 through the liquid absorbing surface 1111, flows to the micropores 1113a of the other micropore group 1113 through the flow passage 1114, sequentially transfers to the micropores 1113a of the micropore group 1113 nearest to the atomizing surface 1112 layer by layer, and then reaches the atomizing surface 1112 to be heated and atomized; that is, the aerosol-generating substrate is transported from the liquid-absorbing surface 1111 to the atomizing surface 1112 through the micropores 1113a of the multi-layer micropore group 1113 and the flow channels 1114 communicating with the adjacent two-layer micropore groups 1113.

In order to ensure smooth transfer of the aerosol-generating substrate from the liquid-absorbing surface 1111 to the atomizing surface 1112, the micropores 1113a of the multi-layer micropore group 1113 have progressively increasing capillary forces in the direction from the liquid-absorbing surface 1111 to the atomizing surface 1112. That is, the liquid-locking ability of the micropores 1113a of the multi-layer micropore group 1113 gradually increases in the direction from the liquid-absorbing surface 1111 toward the atomizing surface 1112.

The cross-sectional shape of the micropores 1113a of each layer of the micropore group 1113 is one of circular and elongated. The cross-sectional shapes of the micropores 1113a of the micropore group 1113 of the different layers are the same or different. When the cross-sectional shape of the micro-hole 1113a is elongated, bubbles will grow laterally along the wall of the elongated hole, and the micro-hole 1113a will be rarely punched out, so that the bubble-returning phenomenon of the heating element 11 is significantly reduced. The cross section of the micro-hole 1113a refers to a cross section perpendicular to the axial direction thereof.

The material of the dense substrate 111 is one of glass, dense ceramic and sapphire, and is specifically designed according to the needs.

The heat conductivity of the dense matrix 111 is less than 5W/(mK), which is advantageous for reducing heat loss and further improving atomization efficiency.

In one embodiment, the axis of the micropores 1113a of each layer of micropore group 1113 is parallel to the thickness direction of dense substrate 111; and/or the plurality of micropores 1113a of each layer of micropore group 1113 are arranged in an array. Wherein the liquid suction surface 1111 is parallel to the atomizing surface 1112, the axis of the micro-holes 1113a is perpendicular to the liquid suction surface 1111, and the flow channels 1114 are parallel to the liquid suction surface 1111 (as shown in fig. 3 a-4, 9 a-9 c). The specific design of each layer of the micropore group 1113 is described in detail below with an example in which the axis of the micropores 1113a is parallel to the thickness direction of the dense substrate 111, and the present application does not limit that the axis of the micropores 1113a must be parallel to the thickness direction of the dense substrate 111.

In one embodiment, dense substrate 111 has two layer microwell sets 1113 thereon, a first layer microwell set 1113-1 comprising a plurality of first microwells 1113a-1 and a second layer microwell set 1113-2 comprising a plurality of second microwells 1113a-2, respectively. The ports of the first set of micro holes 1113a-1 that are remote from the second set of micro holes 1113-2 are located at the atomizing face 1112 and the ports of the second set of micro holes 1113a-2 that are remote from the first set of micro holes 1113-1 are located at the wicking face 1111. The end of the first set of micro-holes 1113a-1 adjacent to the second set of micro-holes 1113-2 communicates with the end of the second set of micro-holes 1113a-2 adjacent to the first set of micro-holes 1113-1 via flow channels 1114 (as shown in FIGS. 3 a-9 c).

In other words, flow channels 1214 divide dense matrix 111 into a first layer of dense matrix having first layer of microwell set 1113-1 and a second layer of dense matrix having second layer of microwell set 1113-2; the thickness of the first layer compact matrix is 0.1mm-1mm, and the thickness of the second layer compact matrix is not greater than that of the first layer compact matrix. If the thickness of the first layer of compact matrix is larger than 1mm, the liquid supply requirement cannot be met, the aerosol quantity is reduced, and the heat loss is high; if the thickness of the first dense matrix is less than 0.1mm, it is not advantageous to ensure the strength of the dense matrix 111 and to improve the performance of the electronic atomizing device.

It should be noted that the first layer micro-pore group 1113-1 and the second layer micro-pore group 1113-2 have the same meaning as the micro-pore group 1113, and the first micro-pore 1113a-1 and the second micro-pore 1113a-2 have the same meaning as the micro-pore 1113a, but the above-mentioned names are provided for convenience of description of the structure of the heating element 11. The structure of the heating element 11 and the technical effects thereof will be described in detail only by taking the compact substrate 111 provided with the two-layer micropore group 1113 and the flow passage 1114 between the two-layer micropore groups 1113 as examples, and the compact substrate 111 is not limited to only have the two-layer micropore group 1113.

As shown in fig. 6, if the micropores 311 on the heating element are through holes penetrating the heating element, bubbles generated on the atomizing surface during atomization of the heating element are likely to quickly reach the liquid absorbing surface 313 of the heating element along the micropores 311, and under the condition that the bubbles on the liquid absorbing surface 313 are not timely separated, the aerosol generating substrate cannot enter the micropores 311, so that insufficient liquid supply is caused, and dry combustion is further caused.

As shown in FIG. 5, in the present application, by making the micropores 1113a of the micropore groups 1113 of two adjacent layers non-aligned, for example, the projections of the first micropores 1113a-1 and the second micropores 1113a-2 on the flow channel 1114 are staggered, and the bubbles generated in the atomization process of the heating element 11 cannot directly enter the second micropores 1113a-2 along a straight line after entering from the first micropores 1113a-1, and can enter the second micropores 1113a-1 after moving a certain distance in the flow channel 1114, so that the local resistance of the movement of the bubbles to the liquid absorbing surface 1111 is increased, and the speed of the movement of the bubbles to the liquid absorbing surface 1111 is slowed down. By providing the flow channels 1114 inside the dense matrix 111, bubbles can be induced to flow inside the flow channels 1114; air and aerosol-generating substrate vapor are typically present in the bubbles at the same time, and the aerosol-generating substrate vapor in the bubbles condenses as the bubbles move at low velocity within the flow passage 1114, reducing the volume of the bubbles; the bubbles moving at a low speed and having a reduced volume are more easily discharged from the atomizing surface 1112 or transported to a non-atomizing area through the flow channel 1114, so that the influence of the bubbles on liquid supply is reduced, the liquid supply is ensured to be sufficient, and dry burning is avoided. That is, by providing the micro-holes 1113a on the dense substrate 111 as described above, the bubbles during atomization can be prevented from being backflushed back to the liquid storage chamber 14, avoiding the risk of generating bubbles.

It should be noted that, the projection of the first micro-hole 1113a-1 and the second micro-hole 1113a-2 on the flow channel 1114 shown in fig. 4 partially overlaps; the projections of the first and second micro-holes 1113a-1, 1113a-2 shown in FIGS. 3a and 3b are offset on the flow channel 1114. The positional relationship between the first micro-hole 1113a-1 and the second micro-hole 1113a-2 shown in fig. 3a and 4 can achieve the same technical effect as the positional relationship between the first micro-hole 1113a-1 and the second micro-hole 1113a-2 shown in fig. 3 b. The effect diagram shown in fig. 3b is shown in fig. 5.

In one embodiment, the pore size of the first micro-pores 1113a-1 is the same along the axial direction of the first micro-pores 1113 a-1; the pore size of the second micro pore 1113a-2 is the same along the axial direction of the second micro pore 1113 a-2.

In one embodiment, the first micro-holes 1113a-1 have a width of 5 micrometers to 100 micrometers, the second micro-holes 1113a-2 have a width of 10 micrometers to 200 micrometers, and the second micro-holes 1113a-2 have a width that is not less than the width of the first micro-holes 1113a-1 to enable the aerosol-generating substrate to be transported from the liquid-absorbing surface 1111 to the atomizing surface 1112 to be heat atomized. When the cross-sectional shape of the first micro-hole 1113a-1 and/or the second micro-hole 1113a-2 is circular, the width refers to the diameter thereof.

In one embodiment, the cross-sectional shape of the first micro-hole 1113a-1 is circular, and the cross-sectional shape of the second micro-hole 1113a-2 is elongated. By providing the second micro-holes 1113a-2 as elongated holes, the liquid supply capacity can be improved relative to circular holes; in addition, the return air (i.e., bubbles entering the liquid storage chamber 14) can be prevented while satisfying the liquid supply speed. The air bubble has large resistance along the transverse direction, is difficult to fill the whole strip-shaped hole, avoids blocking 1113a-2 by the air bubble, and is beneficial to ensuring sufficient liquid supply. Bubbles can transversely grow in the holes along the hole walls of the second micropores 1113a-2, so that the bubbles cannot reversely enter the liquid storage cavity 14, atomization efficiency can be improved, and the risk of dry burning or film breakage caused by gas return is reduced. The width of the second micro-holes 1113a-2 is not smaller than the diameter of the first micro-holes 1113a-1 to enable the aerosol-generating substrate to flow from the second micro-holes 1113a-2 to the first micro-holes 1113a-1 for atomization by the heating element 112.

Optionally, the width of the second micro-hole 1113a-2 is the same as the diameter of the first micro-hole 1113a-1, so that the first micro-hole 1113a-1 and the second micro-hole 1113a-2 can be formed by etching simultaneously after laser modification, thereby being beneficial to improving the processing efficiency.

In one embodiment, the projections of the first and second micro-holes 1113a-1, 1113a-2 on the atomizing surface 1112 are offset (as shown in fig. 3a and 3 b). Specifically, the projections of the first micro-holes 1113a-1 and the second micro-holes 1113a-2 on the atomizing surface 1112 are tangential or partially adjacent (as shown in FIG. 3 a); the projection of the first micro-holes 1113a-1 and the second micro-holes 1113a-2 onto the atomizing surface 1112 are spaced apart (as shown in FIG. 3 b).

In one embodiment, the projections of the first and second micro-holes 1113a-1, 1113a-2 onto the atomizing face 1112 overlap (as shown in FIG. 4).

In one embodiment, the first micro holes 1113a-1 are first blind holes formed on the atomizing surface 1112, and the axis of the first blind holes is parallel to the thickness direction of the dense substrate 111; the second micro holes 1113a-2 are second blind holes provided on the liquid absorbing surface 1111, and the axis of the second blind holes is parallel to the thickness direction of the dense substrate 111; the flow passage 1114 extends through the bottoms of the first blind hole and the second blind hole such that the first blind hole communicates with the second blind hole (as shown in fig. 3 a-4, 7-9 c).

Optionally, a wall surface of the runner 1114 near the second blind hole (the second micro hole 1113 a-2) is flush with a bottom surface of the first blind hole (the first micro hole 1113 a-1), and a wall surface of the runner 1114 near the first blind hole (the first micro hole 1113 a-1) is flush with a bottom surface of the second blind hole (the second micro hole 1113 a-2) (as shown in fig. 3a, 3b, 4, 7 and 8). Along the thickness direction of the dense substrate 111, the wall surface of the flow passage 1114 near the second blind hole (second micro hole 1113 a-2) is disposed opposite to the wall surface of the flow passage 1114 near the first blind hole (first micro hole 1113 a-1). In this structure, the first and second micro-holes 1113a-1 and 1113a-2 may also be understood as through holes located at both sides of the flow passage 1114.

Alternatively, the flow passage 1114 is disposed adjacent to the side wall of the second blind hole (second micro hole 1113 a-2) and spaced from the bottom surface of the first blind hole (first micro hole 1113 a-1), and the flow passage 1114 is disposed adjacent to the side wall of the first blind hole (first micro hole 1113 a-1) and spaced from the bottom surface of the second blind hole (second micro hole 1113 a-2) (as shown in fig. 9 a). Through the arrangement, bubbles can be better blocked; at the same time, the flow passage 1114 is prevented from being locally too narrow due to the tolerance, and the first micro-holes 1113a-1 and the second micro-holes 1113a-2 corresponding up and down of the local flow passage 1114 are prevented from being not communicated.

Alternatively, the wall surface of the runner 1114 near the second blind hole (second micro hole 1113 a-2) is flush with the bottom surface of the first blind hole (first micro hole 1113 a-1), and the wall surface of the runner 1114 near the first blind hole (first micro hole 1113 a-1) is spaced from the bottom surface of the second blind hole (second micro hole 1113 a-2) (as shown in fig. 9 b). Through the arrangement, bubbles can be better blocked; at the same time, the flow passage 1114 is prevented from being locally too narrow due to the tolerance, and the first micro-holes 1113a-1 and the second micro-holes 1113a-2 corresponding up and down of the local flow passage 1114 are prevented from being not communicated.

Alternatively, the wall surface of the runner 1114 near the second blind hole (second micro hole 1113 a-2) is spaced from the bottom surface of the first blind hole (first micro hole 1113 a-1), and the wall surface of the runner 1114 near the first blind hole (first micro hole 1113 a-1) is flush with the bottom surface of the second blind hole (second micro hole 1113 a-2) (as shown in fig. 9 c). Through the arrangement, bubbles can be better blocked; at the same time, the flow passage 1114 is prevented from being locally too narrow due to the tolerance, and the first micro-holes 1113a-1 and the second micro-holes 1113a-2 corresponding up and down of the local flow passage 1114 are prevented from being not communicated.

In one embodiment, along the extending direction of the flow channel 1114, the flow channel 1114 is divided into a plurality of parts, each part having a center point M, i.e. the flow channel 1114 includes a plurality of center points M; the plurality of center points M lie on the same plane (as shown in fig. 3 a-4, 7-9 c) or on multiple planes (as shown in fig. 8).

The dense substrate 111 has a rectangular shape. The extending direction of the flow channels 1114 means that the flow channels 1114 extend from one side of the dense substrate 111 to the other side along the length direction of the dense substrate 111; alternatively, the extending direction of the flow channels 1114 refers to the flow channels 1114 extending from one side of the dense substrate 111 to the other side along the width direction of the dense substrate 111.

Alternatively, the height of the flow channels 1114 is the same along the direction of extension of the flow channels 1114. The flow channels 1114 have a height of 10 microns to 150 microns. The flow passage 1114 has a height of less than 10 μm, cannot well achieve the effect of preventing bubbles from entering the liquid suction surface 1111, and is not well processed; the height of the flow passage 1114 is greater than 150 microns, and bubbles are easily combined and grow transversely to form large bubbles, which affect liquid supply.

Optionally, the plurality of centerpoints M lie in a common plane that is parallel to the atomizing face 1112 (as shown in FIGS. 3 a-4, 9 a-9 c).

Alternatively, the plurality of centerpoints M lie in a common plane that forms an angle with the atomizing face 1112 (as shown in FIG. 7). The included angle is 20-60 degrees.

Optionally, the plurality of center points M lie on a plurality of planes, and the line connecting the plurality of center points M forms a curve (as shown in fig. 8) or a broken line. The curve or the folding line undulates up and down in the thickness direction of the dense base 111 or undulates left and right in the direction perpendicular to the thickness of the dense base 111.

In one embodiment, the flow channel 1114 is a complete gap with which all of the micro-holes 1113a of the adjacent two-layer micro-hole sets 1113 communicate. At this time, the first micro-holes 1113a-1 and the second micro-holes 1113a-2 may also be understood as through holes located at both sides of the flow channel 1114, and the projections of the first micro-holes 1113a-1 and the second micro-holes 1113a-2 on the atomizing surface 1112 at most partially overlap.

Alternatively, the height of the gap is the same along the extension of the flow passage 1114. The height of the gap is 10 micrometers-150 micrometers; the height of less than 10 μm does not achieve well the effect of preventing bubbles from entering the liquid suction surface 1111, and is not well processed; the height is more than 150 micrometers, and bubbles are easy to transversely combine and grow to form large bubbles, so that liquid supply is affected.

Alternatively, the cross-sectional shape of the flow passage 1114 is linear or curvilinear or a zigzag shape along the extension direction of the flow passage 1114.

In one embodiment, the flow channel 1114 includes a plurality of first sub-flow channels 1114a spaced apart and extending in the first direction X.

Optionally, the first plurality of sub-channels 1114a extend in a straight line or a curved line or a broken line.

Optionally, the centerlines of the first plurality of sub-flow channels 1114a are on a common plane that is parallel to or at an angle to the atomizing face 1112.

Optionally, the centerlines of the first plurality of sub-channels 1114a are not on the same plane, and the connecting lines of the endpoints on the same side of the centerlines of the first plurality of sub-channels 1114a are curved or broken lines.

Optionally, the width of the first sub-runner 1114a is not less than the width of the first micro-hole 1113a-1 and not greater than the width of the second micro-hole 1113 a-2; and/or the first sub-flow passage 1114a has a height of 10 microns to 150 microns. By setting the width of the first sub-flow passage 1114a as described above, a smooth flow of aerosol-generating substrate from the liquid-absorbing surface to the atomizing surface is ensured. The first sub-flow passage 1114a has a height of less than 10 μm, cannot well achieve the effect of preventing bubbles from entering the liquid suction surface 1111, and is not well processed; the first sub-flow passage 1114a has a height greater than 150 microns, and bubbles tend to merge laterally and grow to form large bubbles, affecting the liquid supply.

In one embodiment, the flow channel 1114 includes a plurality of second sub-flow channels 1114b spaced apart and extending in the second direction Y.

Optionally, the plurality of second sub-channels 1114b extend in a straight line or a curved line or a broken line.

Optionally, the centerlines of the second plurality of sub-flow channels 1114b are on the same plane that is parallel to or at an angle to the atomizing face 1112.

Optionally, the centerlines of the second sub-flow channels 1114b are not on the same plane, and the connecting lines of the endpoints on the same side of the centerlines of the second sub-flow channels 1114b are curved or broken lines.

Optionally, the width of the second sub-runner 1114b is not less than the width of the first micro-hole 1113a-1 and not greater than the width of the second micro-hole 1113 a-2; and/or the second sub-runner 1114b has a height of 10 microns to 150 microns. By setting the width of the second sub-flow passage 1114b as described above, a smooth flow of aerosol-generating substrate from the liquid-absorbing surface to the atomizing surface is ensured. The second sub-flow passage 1114b has a height of less than 10 μm, cannot well achieve the effect of preventing bubbles from entering the liquid suction surface 1111, and is not well processed; the second sub-flow passage 1114b has a height greater than 150 microns and the bubbles tend to merge laterally and grow to form large bubbles, affecting the liquid supply.

In an embodiment, the flow channel 1114 includes a plurality of first sub-flow channels 1114a disposed at intervals and extending along the first direction X and a plurality of second sub-flow channels 1114b disposed at intervals and extending along the second direction Y, and the plurality of first sub-flow channels 1114a and the plurality of second sub-flow channels 1114b are disposed to intersect and communicate with each other (as shown in fig. 10-13).

Optionally, the width of the first sub-flow passage 1114a is the same as the width of the second sub-flow passage 1114 b.

Optionally, the width of the first sub-runner 1114a and the second sub-runner 1114b is not less than the width of the first micro-hole 1113a-1 and not greater than the width of the second micro-hole 1113 a-2; and/or the first and second sub-runners 1114a, 1114b have a height of 10 microns to 150 microns. By providing the widths of the first and second sub-channels 1114a, 1114b as described above, a smooth flow of aerosol-generating substrate from the liquid-absorbing surface to the atomizing surface is ensured. The heights of the first and second

sub-flow passages

1114a and 1114b are less than 10 micrometers, the effect of preventing bubbles from entering the liquid suction surface 1111 cannot be well achieved, and the processing is not good; the first sub-flow passage 1114a and the second sub-flow passage 1114b have a height greater than 150 microns, and the bubbles easily merge and grow laterally to form large bubbles, which affects the liquid supply.

Optionally, the centerlines of the first plurality of sub-flow channels 1114a and the centerlines of the second plurality of sub-flow channels 1114b are on the same plane that is parallel to or at an angle to the atomizing face 1112.

Optionally, the center lines of the first sub-flow channels 1114a and the center lines of the second sub-flow channels 1114b are not on the same plane, and the connecting lines of the end points on the same side of the center lines of the first sub-flow channels 1114a are curved or broken lines, and the connecting lines of the end points on the same side of the center lines of the second sub-flow channels 1114b are curved or broken lines.

The flow path 1114 includes a plurality of first sub-flow paths 1114a and a plurality of second sub-flow paths 1114b, and the axis of the first micro-holes 1113a-1 and the axis of the second micro-holes 1113a-2 are parallel to the thickness direction of the dense substrate 111, respectively, and the positional relationship among the first micro-holes 1113a-1, the second micro-holes 1113a-2, and the flow paths 1114 will be described in detail.

In one embodiment, as shown in FIG. 10, the orthographic projection of the first micro-hole 1113a-1 on the flow channel 1114 is located at the intersection of the first sub-flow channel 1114a and the second sub-flow channel 1114b, and the orthographic projection of the second micro-hole 1113a-2 on the flow channel 1114 is located between two adjacent first sub-flow channels 1114a and spans across the plurality of second sub-flow channels 1114b. The first micro-hole 1113a-1 and the second micro-hole 1113a-2 are completely offset.

Specifically, the first micro-holes 1113a-1 are arranged in a two-dimensional array, and the orthographic projection of each row of the first micro-holes 1113a-1 on the flow channel 1114 is located on one first sub-flow channel 1114a, and the orthographic projection of each column of the first micro-holes 1113a-1 on the flow channel 1114 is located on one second sub-flow channel 1114b. Along the extending direction of the second sub-flow channels 1114b, only one row of the second micro-holes 1113a-2 is provided between two adjacent first sub-flow channels 1114a, i.e., a plurality of first sub-flow channels 1114a and a plurality of rows of the second micro-holes 1113a-1 are alternately arranged.

The cross-sectional shape of the first micro-hole 1113a-1 is circular, the cross-sectional shape of the second micro-hole 1113a-2 is elongated, and by providing the second micro-hole 1113a-2 as an elongated hole, the liquid supply capability can be improved relative to a circular hole; in addition, the resistance of the bubbles which transversely grow is large, the whole long-shaped hole is difficult to fill, the bubbles are prevented from blocking 1113a-2, and sufficient liquid supply is guaranteed. The first micro-holes 1113a-1 have a diameter of 10 micrometers to 100 micrometers; the second micro-holes 1113a-2 have a width of 10 micrometers to 100 micrometers and a length of more than 100 micrometers. The plurality of first sub-channels 1114a and the plurality of second micro-holes 1113a-1 are alternately arranged. The diameter of the first micro-hole 1113a-1 is the same as the width of the second micro-hole 1113a-2, so that the first micro-hole 1113a-1 and the second micro-hole 1113a-2 can be formed by simultaneous corrosion processing after laser modification, and the processing efficiency can be improved; and/or the diameter of the first micro-hole 1113a-1 is the same as the width of each of the first and second sub-channels 1114a and 1114 b. By making the diameter of the first micro-hole 1113a-1 the same as the respective widths of the first and second

sub-flow channels

1114a and 1114b, it is advantageous to improve the processing efficiency when the above-described structure is formed using a chemical etching process.

In one embodiment, as shown in FIG. 11, the orthographic projection of the first micro-holes 1113a-1 of the odd-numbered rows of the first layer micro-hole group 1113-1 on the flow channel 1114 is located at the intersection of the first sub-flow channel 1114a and the second sub-flow channel 1114b, and the orthographic projection of the first micro-holes 1113a-1 of the even-numbered rows of the first layer micro-hole group 1113-1 on the flow channel 1114 is located on the first sub-flow channel 1114a and between the adjacent two second sub-flow channels 1114 b. The orthographic projection of the second microwells 1113a-2 of the second layer microwell group 1113-2 on the flow channel 1114 is located on the second sub-flow channel 1114b and between two adjacent first sub-flow channels 1114 a. The first micro-hole 1113a-1 and the second micro-hole 1113a-2 are completely offset.

Specifically, the first micropores 1113a-1 are arranged in a two-dimensional array, and two adjacent rows are arranged in a staggered manner. The plurality of second micro holes 1113a-2 are arranged in a two-dimensional array and aligned in a column direction with the two-dimensional array formed by the first micro holes 1113a-1 of the odd-numbered rows.

The cross-sectional shape of the first micro-hole 1113a-1 and the cross-sectional shape of the second micro-hole 1113a-2 are both circular.

The diameter of the second micro-hole 1113a-2 is larger than the diameter of the first micro-hole 1113 a-1; and/or the diameter of the first micro-hole 1113a-1 is the same as the width of the first sub-flow passage 1114 a.

The width of the first sub-flow passage 1114a is the same as the width of the second sub-flow passage 1114 b.

Along the extending direction of the second sub-flow passage 1114b, only one second micro-hole 1113a-2 is provided between two adjacent first sub-flow passages 1114 a. The diameter of the second micro-hole 1113a-2 is the same as the separation distance between the adjacent two first sub-flow channels 1114 a.

In one embodiment, as shown in FIG. 12, the orthographic projection of the second micro-hole 1113a-2 onto the flow channel 1114 is located at the intersection of the first sub-flow channel 1114a and the second sub-flow channel 1114 b. The orthographic projection of one second micro-hole 1113a-2 onto the flow channel 1114 overlaps with the orthographic projection of four first micro-holes 1113a-1 onto the flow channel 1114. And the orthographic projections of the four first micro-holes 1113a-1 on the flow channel 1114, which are partially overlapped with the orthographic projections of the same second micro-hole 1113a-2 on the flow channel 1114, are distributed along the periphery of the orthographic projection of the same second micro-hole 1113a-2 on the flow channel 1114. The first micro-hole 1113a-1 and the second micro-hole 1113a-2 are partially offset.

Specifically, the first plurality of micro-holes 1113a-1 and the second plurality of micro-holes 1113a-2 are each arranged in a two-dimensional array. The orthographic projections of two adjacent rows of first micro-holes 1113a-1 on the flow channel 1114 are partially overlapped with the same first sub-flow channel 1114 a; the orthographic projections of two adjacent rows of first micro-holes 1113a-2 on the flow channel 1114 partially overlap with the same second sub-flow channel 1114 b.

The first micro-hole 1113a-1 has an elongated cross-sectional shape, and the second micro-hole 1113a-2 has a circular cross-sectional shape. The diameter of the second micro-hole 1113a-2 is larger than the width of the first micro-hole 1113 a-1; and/or the diameter of the second micro-hole 1113a-2 is greater than the respective widths of the first and second

sub-flow channels

1114a, 1114 b.

In one embodiment, as shown in FIG. 13, the orthographic projection of the first micro-hole 1113a-1 onto the flow channel 1114 is located on the first sub-flow channel 1114a or on the second sub-flow channel 1114 b; the orthographic projection of one second micro-hole 1113a-2 on the flow channel 1114 is partially overlapped with the orthographic projections of three first micro-holes 1113a-1 on the flow channel 1114, and the central connecting lines of the three first micro-holes 1113a-1 form a triangle; between two adjacent triangles there is a first micro-hole 1113a-1. The first micro-hole 1113a-1 and the second micro-hole 1113a-2 are partially offset.

Specifically, the first micropores 1113a-1 are arranged in a two-dimensional array, and two adjacent rows of the first micropores 1113a-1 are arranged in a staggered manner; the plurality of second micro-holes 1113a-2 are arranged in a two-dimensional array; each second micro-hole 1113a-2 partially overlaps with the orthographic projection of one first micro-hole 1113a-1 of the odd-numbered row and two adjacent first micro-holes 1113a-1 of the even-numbered row on the flow channel 1114, respectively. An odd-numbered first micro-hole 1113a-1 of the plurality of first micro-holes 1113a-1 located in the odd-numbered row overlaps with an orthographic projection portion of the second micro-hole 1113a-2 on the flow channel 1114, and the even-numbered first micro-hole 1113a-1 is spaced from an orthographic projection of the second micro-hole 1113a-2 on the flow channel 1114; of the plurality of first micro holes 1113a-1 located in even-numbered rows, the nth and (n+1) th first micro holes 1113a-1 overlap with the orthographic projection portion of the same second micro hole 1113a-2 on the flow channel 1114, and n is a natural number.

The cross-sectional shape of the first micro-hole 1113a-1 and the cross-sectional shape of the second micro-hole 1113a-2 are both circular, and the diameter of the second micro-hole 1113a-2 is larger than the diameter of the first micro-hole 1113 a-1; and/or the diameter of the first micro-hole 1113a-1 is the same as the width of each of the first and second sub-channels 1114a and 1114 b.

With continued reference to fig. 3a, the heating element 11 further includes a heating element 112, and the heating element 112 is disposed on the atomizing surface 1112. The heating element 112 is electrically connected to the host 2. The heating element 112 may be a heat generating sheet, a heat generating film, or the like, and may be capable of heating the atomized aerosol-generating substrate. In another embodiment, dense matrix 111 is at least partially electrically conductive for electrically heating the aerosol-generating substrate, i.e., dense matrix 111 is atomized while being liquid conductive. In one embodiment, the heating element 112 is a metal film deposited on the atomizing face 1112.

Referring to FIG. 14, FIG. 14 is a schematic diagram showing the structure of a second embodiment of a heating element according to the present application.

The structure of the second embodiment of the heat-generating body 11 is substantially the same as that of the first embodiment of the heat-generating body 11, except that: in the first embodiment of the heat-generating body 11, the aperture of the micro-hole 1113a is the same along the axial direction of the micro-hole 1113 a; in the second embodiment of the heating element 11, the aperture of the micro-hole 1113a is different along the axis direction of the micro-hole 1113a, and the same parts will not be described again.

In the present embodiment, the first micro holes 1113a-1 are first blind holes provided on the atomizing surface 1112, and the axis of the first blind holes is parallel to the thickness direction of the dense substrate 111; the second micro holes 1113a-2 are second blind holes provided on the liquid suction surface 1111, and the axis of the second blind holes is parallel to the thickness direction of the dense substrate 111.

The flow passage 1114 is arranged at an interval from the bottom surface of the first blind hole (first micro hole 1113 a-1) to the wall surface of the side close to the second blind hole (second micro hole 1113 a-2), and the flow passage 1114 is arranged at an interval from the bottom surface of the second blind hole (second micro hole 1113 a-2) to the wall surface of the side close to the first blind hole (first micro hole 1113 a-1). Along the thickness direction of the dense substrate 111, the wall surface of the flow passage 1114 near the second blind hole (second micro hole 1113 a-2) is disposed opposite to the wall surface of the flow passage 1114 near the first blind hole (first micro hole 1113 a-1).

The pore size of the first blind hole (first micro pore 1113 a-1) gradually increases and the pore size of the second blind hole (first micro pore 1113 a-2) gradually decreases in the direction from the liquid suction surface 1111 toward the atomizing surface 1112. The first blind hole (first micro hole 1113 a-1) and the second blind hole (second micro hole 1113 a-2) are tapered holes. By providing the first micro-hole 1113a-1 and the second micro-hole 1113a-2 as described above, the liquid feeding speed is further improved.

The dense substrate 111 of the heating element 11 in the above-described embodiment provided in the present application may be formed by laser modification in combination with a chemical etching process. After the untreated compact matrix is modified by laser, microcracks and internal stress are generated in the material, and the chemical corrosion speed of the laser modified area is higher than that of the non-laser modified area. The laser modified dense substrate is placed in an etching solution, and the laser modified region is gradually etched to produce the multi-layer microwell set 1113 and the flow channels 1114 in the above embodiment. Among them, there are two types of laser modification methods, one type is to focus a laser beam into a beam with a long focal depth, for example, a Bessel beam, and such a beam can form a modified layer with a larger depth in a dense substrate, and the micro-holes 1113a in the above embodiment are formed by this process; another type is a laser beam focused to a short focal depth, for example, by high power objective lens focusing, which can form a modified layer of lesser depth in a dense substrate, through which the flow channel 1114 is formed in the above embodiment. The dense matrix is typically first treated by various laser modification processes and then chemically etched.

It should be noted that the above method is only one preparation method for implementing the dense substrate 111 in any of the above embodiments, and the present application is not limited thereto.

The foregoing is only the embodiments of the present application, and not the patent scope of the present application is limited by the foregoing description, but all equivalent structures or equivalent processes using the contents of the present application and the accompanying drawings, or directly or indirectly applied to other related technical fields, which are included in the patent protection scope of the present application.

Claims

1. A heat-generating body for use in an electronic atomizing device for atomizing an aerosol-generating substrate, comprising:

the integrated compact substrate is provided with a liquid suction surface and an atomization surface which are oppositely arranged; along the thickness direction of the compact substrate, a plurality of layers of micropore groups and a runner positioned in the compact substrate are arranged on the compact substrate; each layer of the micropore group comprises a plurality of micropores, and the micropores extend along the direction from the liquid suction surface to the atomization surface; the micropores of the micropore groups of two adjacent layers are arranged in a non-aligned manner; the extending direction of the runner is intersected with the extending direction of the micropores, so that two adjacent micropore groups are communicated through the runner.

2. A heat-generating body according to claim 1, wherein the micropores of the multi-layer micropore group have a gradually increasing capillary action in a direction from the liquid suction surface to the atomizing surface.

3. A heat-generating body according to claim 2, wherein the dense substrate is provided with two layers of the micropore group, which are a first layer micropore group including a plurality of first micropores and a second layer micropore group including a plurality of second micropores, respectively; the port of the first micropore far away from the second layer micropore group is positioned on the atomization surface, and the port of the second micropore far away from the first layer micropore group is positioned on the liquid absorption surface; one end of the first micropore close to the second layer micropore group is communicated with one end of the second micropore close to the first layer micropore group through the runner.

4. A heat-generating body as described in claim 3, wherein the width of the first micro-hole is 5 to 100 micrometers, the width of the second micro-hole is 10 to 200 micrometers, and the width of the second micro-hole is not smaller than the width of the first micro-hole.

5. A heat-generating body according to claim 3, wherein the cross-sectional shape of the first micro-hole is circular, and the cross-sectional shape of the second micro-hole is elongated; the width of the second micropores is not smaller than the diameter of the first micropores.

6. A heat-generating body as described in claim 5, wherein the width of the second micropores is the same as the diameter of the first micropores.

7. A heat-generating body according to claim 3, wherein the first micro-hole is a first blind hole provided in the atomizing face, and an axis of the first blind hole is parallel to a thickness direction of the dense substrate; the second micropore is a second blind hole arranged on the liquid suction surface, and the axis of the second blind hole is parallel to the thickness direction of the compact substrate;

8. A heat generating body as recited in claim 7, wherein a wall surface of the flow passage on a side close to the second blind hole is provided at an interval from a bottom surface of the first blind hole, and a wall surface of the flow passage on a side close to the first blind hole is provided at an interval from a bottom surface of the second blind hole;

9. A heat generating body as recited in claim 8, wherein a wall surface of the flow passage on a side close to the second blind hole is provided at an interval from a bottom surface of the first blind hole, and a wall surface of the flow passage on a side close to the first blind hole is provided at an interval from a bottom surface of the second blind hole; the aperture of the first blind hole is gradually increased, and the aperture of the second blind hole is gradually decreased along the direction from the liquid suction surface to the atomization surface.

10. A heat-generating body according to claim 1, wherein the flow path is an entire layer gap, and all of the micropores of the adjacent two layers of the micropore group communicate with the gap;

11. A heat-generating body as described in claim 1, wherein, along an extending direction of the flow path, the flow path includes a plurality of center points, and a plurality of the center points are located on the same plane or on a plurality of planes.

12. A heat-generating body as described in claim 11, wherein a plurality of said center points are located on the same plane, said plane being parallel to or forming an angle with said atomizing face.

13. A heat-generating body according to claim 1, wherein the dense substrate is provided with two layers of the micropore group, which are a first layer micropore group including a plurality of first micropores and a second layer micropore group including a plurality of second micropores, respectively; the port of the first micropore far away from the second layer micropore group is positioned on the atomization surface, and the port of the second micropore far away from the first layer micropore group is positioned on the liquid absorption surface; one end of the first micropore close to the second layer micropore group is communicated with one end of the second micropore close to the first layer micropore group through the runner;

14. A heat-generating body as described in claim 13, wherein the cross-sectional shape of the first micro-hole is a circle, and the cross-sectional shape of the second micro-hole is an elongated shape.

15. A heat-generating body as described in claim 14, wherein the diameter of the first micropores is 10 to 100 μm; the width of the second micropore is 10 micrometers to 100 micrometers, and the length of the second micropore is more than 100 micrometers.

16. A heat-generating body as described in claim 14, wherein a diameter of the first micropores is the same as a width of the second micropores; and/or the diameter of the first micropore is the same as the width of each of the first sub-runner and the second sub-runner.

17. A heat generating body as recited in claim 14, wherein an orthographic projection of said first micro-hole on said flow path is located at an intersection of said first sub-flow path and said second sub-flow path, and wherein an orthographic projection of said second micro-hole on said flow path is located between two adjacent first sub-flow paths and spans a plurality of said second sub-flow paths.

18. A heat generating body as recited in claim 17, wherein a plurality of said first micro-holes are arranged in a two-dimensional array, an orthographic projection of each row of said first micro-holes on said flow path being located on one of said first sub-flow paths, an orthographic projection of each column of said first micro-holes on said flow path being located on one of said second sub-flow paths;

19. A heat-generating body according to claim 13, wherein orthographic projections of the first micropores of the odd-numbered rows in the first layer micropore group on the flow path are located at intersections of the first sub-flow path and the second sub-flow path, orthographic projections of the first micropores of the even-numbered rows in the first layer micropore group on the flow path are located on the first sub-flow path and between adjacent two of the second sub-flow paths;

20. A heat-generating body as described in claim 19, wherein the cross-sectional shape of the first micro-hole and the cross-sectional shape of the second micro-hole are both circular.

21. A heat-generating body as described in claim 20, wherein a diameter of the second micropores is larger than a diameter of the first micropores; and/or the diameter of the first micropore is the same as the width of the first sub-runner.

22. A heat generating body as recited in claim 13, wherein an orthographic projection of said second micro-aperture on said flow channel is located at an intersection of said first sub-flow channel and said second sub-flow channel;

23. A heat-generating body as described in claim 22, wherein a plurality of said first micropores and a plurality of said second micropores are each arranged in a two-dimensional array;

24. A heat-generating body as described in claim 22, wherein the cross-sectional shape of the first micro-hole is an elongated shape, and the cross-sectional shape of the second micro-hole is a circular shape.

25. A heat-generating body as described in claim 24, wherein a diameter of the second micropores is larger than a width of the first micropores; and/or the diameter of the second micropore is larger than the respective widths of the first sub-runner and the second sub-runner.

26. A heat generating body as recited in claim 13, wherein an orthographic projection of said first micro-aperture on said flow channel is located on either said first sub-flow channel or said second sub-flow channel;

27. A heat generating body as recited in claim 26, wherein a plurality of said first micropores are arranged in a two-dimensional array, and two adjacent rows of said first micropores are arranged in a staggered manner; the second micropores are distributed in a two-dimensional array; each second micropore is respectively overlapped with the orthographic projection of one first micropore of the odd lines and two adjacent first micropores of the even lines on the runner.

28. A heat-generating body as described in claim 26, wherein the cross-sectional shape of the first micropores and the cross-sectional shape of the second micropores are both circular, and the diameter of the second micropores is larger than that of the first micropores; and/or the diameter of the first micropore is the same as the width of each of the first sub-runner and the second sub-runner.

29. A heat-generating body as described in claim 13, wherein a width of the first sub-flow passage and the second sub-flow passage is not smaller than a width of the first micro-hole and not larger than a width of the second micro-hole; and/or the heights of the first sub-runner and the second sub-runner are 10 micrometers-150 micrometers.

30. A heat-generating body as described in claim 13, wherein said flow channel separates said dense matrix into a first layer dense matrix having said first layer micropore group and a second layer dense matrix having said second layer micropore group; the thickness of the first layer compact matrix is 0.1mm-1mm, and the thickness of the second layer compact matrix is not greater than the thickness of the first layer compact matrix.

31. A heat-generating body as described in claim 1, further comprising a heat-generating element provided to the atomizing face.

32. A heat-generating body as described in claim 1, wherein the material of the dense matrix is one of glass, dense ceramic, and sapphire.

33. A heat-generating body as described in claim 1, wherein a thermal conductivity of the material of the dense matrix is less than 5W/(mK).

34. A heat-generating body according to claim 1, wherein an axis of the micropores of each layer of the micropore group is parallel to a thickness direction of the dense matrix; and/or, a plurality of micropores of each layer of the micropore group are arranged in an array.

35. A heat-generating body according to claim 34, wherein the liquid suction surface and the atomizing surface are parallel; the axis of the micropore is perpendicular to the liquid suction surface, and the flow channel is parallel to the liquid suction surface.

36. The heat-generating body according to claim 1, wherein a cross-sectional shape of the micropores of each layer of the micropore group is one of a circular shape and an elongated shape;

37. An atomizer, comprising:

a reservoir for storing an aerosol-generating substrate;

a heater in fluid communication with the reservoir, the heater for atomizing the aerosol-generating substrate; the heat-generating body as described in any one of claims 1 to 36.

38. An electronic atomizing device, comprising:

a nebulizer, which is the nebulizer of claim 37;

and the host is used for providing electric energy for the operation of the heating body and controlling the heating body to atomize the aerosol generating substrate.