CN220777419U

CN220777419U - Heating body, atomizing assembly and electronic atomizing device

Info

Publication number: CN220777419U
Application number: CN202190000439.8U
Authority: CN
Inventors: 吕铭; 段银祥; 朱明达; 汪成涛; 龚博学
Original assignee: Shenzhen Smoore Technology Ltd
Current assignee: Shenzhen Smoore Technology Ltd
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2024-04-16
Anticipated expiration: 2031-09-01
Also published as: WO2022170756A1

Abstract

A heating element (12), an atomization assembly (1) and an electronic atomization device, wherein the heating element (12) comprises a sheet-shaped substrate (125), a heating element (126) and an electrode (123); the sheet-like substrate (125) is a dense matrix (121), the dense substrate (121) includes an atomizing face and a liquid suction face opposite to the atomizing face; the compact substrate (121) is provided with a micropore array area (1218) and a blank area (1219) adjacent to the micropore array area (1218); the micropore array area (1218) is provided with a plurality of first micropores (1213), and the first micropores (1213) are through holes penetrating the atomization surface and the liquid suction surface; an electrode (123) is arranged in a blank zone (1219) of the atomization surface; the heating element (126) is arranged on the compact substrate (121) and is electrically connected with the electrode (123); a heating element (126) for heating the aerosol-generating substrate; the blank area of the meniscus is adapted to cooperate with the sealing member (18), and the blank area (1219) of the meniscus is at least partially covered by the sealing member (18). Reducing the number of first micropores (1213) in the sheet-like substrate (125) as much as possible to improve the strength of the heat-generating body (12); and the blank area (1219) of the liquid absorbing surface of the sheet-like substrate (125) is matched with the sealing member (18), and the sheet-like substrate (125) in the heating element (12) is further prevented from being broken by the sealing member (18).

Description

Heating body, atomizing assembly and electronic atomizing device

Technical Field

The application relates to the technical field of atomizers, in particular to a heating element, an atomizing assembly and an electronic atomizing 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.

The existing heating elements are mainly cotton core heating elements and ceramic heating elements. Most of cotton core heating bodies 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 and then is conveyed to a central metal heating wire for heating and atomizing. Most of ceramic heating elements form a heating film on the surface of a porous ceramic body, the porous ceramic body plays roles of liquid guiding and liquid storage.

With the progress of technology, users have increasingly demanded an atomization effect of an electronic atomization device, and in order to meet the needs of users, a thin heating element is provided to improve the liquid supply capability, such as a sheet-shaped micropore array glass heating element, but the thin heating element is easy to break.

Disclosure of Invention

In view of this, the application provides a heat-generating body, atomizing subassembly and electron atomizing device to solve the easy cracked technical problem of thin heat-generating body among the prior art.

In order to solve the technical problem, the first technical scheme provided by the application is as follows: providing a heating body, comprising a sheet-shaped substrate, an electrode and a heating element; the flaky substrate is a compact substrate, and the compact substrate comprises an atomization surface and a liquid suction surface opposite to the atomization surface; the compact substrate is provided with a micropore array area and a blank area adjacent to the micropore array area; the micropore array area is provided with a plurality of first micropores, and the first micropores are through holes penetrating through the atomizing surface and the liquid suction surface; the electrode is arranged in a blank area of the atomization surface; the heating element is arranged on the compact substrate and is electrically connected with the electrode and used for heating the atomized aerosol generating substrate; wherein, the blank zone of the liquid suction surface is used for being matched with a sealing element, and the blank zone of the liquid suction surface is at least partially covered by the sealing element.

Wherein the flaky substrate is in a flat plate shape; the blank area is arranged around the micropore array area.

The white space comprises two first sub white space areas and two second sub white space areas, the two first sub white space areas are respectively positioned at two opposite sides of the micropore array area along a first direction, the two second sub white space areas are respectively positioned at two opposite sides of the micropore array area along a second direction, and the second direction is perpendicular to the first direction; the width of the first sub-blank area is larger than that of the second sub-blank area; the electrode is arranged in the first sub-blank area.

Wherein the width of the first sub-blank area is 2.1mm-2.6mm; the width of the second sub-blank area is more than or equal to 0.5mm.

The compact substrate is rectangular and flat, and the first micropores in the micropore array area are distributed in a rectangular array; the widths of the two first sub-blank areas are the same, and the widths of the two second sub-blank areas are the same.

The compact substrate is made of glass, and the glass is borosilicate glass, quartz glass or photosensitive lithium aluminosilicate glass.

Wherein the thickness of the compact matrix is 0.1mm-1mm; the pore diameter of the first micropore is 1-100 μm.

Wherein the ratio of the thickness of the compact matrix to the pore diameter of the first micropores is 20:1-3:1.

Wherein the ratio of the center distance between every two adjacent first micropores to the aperture of each first micropore is 3:1-1.5:1.

Wherein the heating element is a heating film and is arranged in a micropore array area on the atomization surface; the heating film is provided with a plurality of second micropores which are in one-to-one correspondence with the first micropores and are mutually communicated.

The heating film is made of silver or silver alloy or copper alloy or aluminum alloy or gold alloy, and the thickness of the heating film is 200nm-5um.

In order to solve the technical problem, the second technical scheme provided by the application is as follows: providing an atomization assembly, which comprises a liquid storage cavity, a heating body and a sealing piece; the reservoir is for storing an aerosol-generating substrate; the heating element is any one of the above a heating element according to one of the above; the first micropore the stock solution Cavity(s) communicating; the sealing element is arranged on the liquid suction surface and covers at least part of the blank area of the liquid suction surface.

Wherein the seal completely covers the blank area of the liquid-absorbent surface; and a liquid inlet is arranged on the sealing piece so that the micropore array area of the liquid absorbing surface is completely exposed.

The atomizing assembly further comprises an atomizing seat, and the sealing piece is clamped between the blank area of the heating body and the atomizing seat.

The atomizing base comprises an atomizing top base and an atomizing base, the atomizing top base and the atomizing base are used for clamping the heating body from the liquid suction surface and the two sides of the atomizing surface respectively, and the sealing piece is clamped between the blank area of the heating body and the atomizing top base.

Wherein, the sealing element is provided with a liquid inlet so as to expose the micropore array area; the atomization footstock is provided with a liquid discharging channel; the liquid inlet is communicated with the liquid storage cavity through the liquid discharging channel; the heating body is matched with the atomizing base to form an atomizing cavity.

Wherein the atomizing seat is made of plastic; the sealing piece is made of silica gel or fluororubber.

Wherein, the atomization component also comprises a thimble; one end of the thimble is abutted with the electrode of the heating body, and the other end of the thimble is electrically connected with the power supply assembly; the sealing element at least covers the area of the liquid suction surface corresponding to the thimble.

In order to solve the above-mentioned technical problems, the third technical scheme that this application provided is: the electronic atomization device comprises an atomization assembly and a power supply assembly, wherein the atomization assembly is any one of the atomization assemblies, and the power supply assembly controls the atomization assembly to work.

The beneficial effects of this application: unlike the prior art, the heating element of the present application comprises a sheet-like substrate, a heating element and an electrode; the flaky substrate is a compact substrate, and the compact substrate comprises an atomization surface and a liquid suction surface opposite to the atomization surface; the compact substrate is provided with a micropore array area and a blank area adjacent to the micropore array area; the micropore array area is provided with a plurality of first micropores, and the first micropores are through holes penetrating through the atomizing surface and the liquid suction surface; the electrode is arranged in a blank area of the atomization surface; the heating element is arranged on the compact substrate and is electrically connected with the electrode; the heating element is used for heating the atomized aerosol generating substrate; the blank area of the liquid suction surface is used for being matched with the sealing element, and the blank area of the liquid suction surface is at least partially covered by the sealing element. Through the arrangement, the number of the first micropores on the flaky substrate is reduced as much as possible, so that the strength of the heating body is improved; and the blank area of the liquid absorbing surface of the sheet-shaped substrate is matched with the sealing piece, and the sheet-shaped substrate in the heating body is further prevented from being broken by the sealing piece.

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 view of an electronic atomizing device provided in the present application;

FIG. 2 is a schematic cross-sectional view of the atomizing assembly provided herein along a first direction;

FIG. 3 is a schematic cross-sectional view of the atomizing assembly provided herein along a second direction;

FIG. 4 is a schematic structural view of the heat-generating body provided in the present application;

FIG. 5 is a schematic view of the structure of the dense matrix in the heat-generating body provided in FIG. 4;

FIG. 6 is a schematic view of the heat-generating body provided in FIG. 4, as viewed from the side of the atomizing face;

FIG. 7 is a schematic view of the heat-generating body provided in FIG. 4, as viewed from the liquid suction surface side;

FIG. 8 is a schematic view of a partial structure of the atomizing assembly provided in FIG. 2;

FIG. 9a is a schematic view of the structure of FIG. 8 in another direction;

FIG. 9b is a schematic partial view of another embodiment of an atomizing assembly provided herein

FIG. 10 is a schematic partial structural view of another embodiment of an atomizing assembly provided herein;

FIG. 11 is a partial schematic structural view of yet another embodiment of an atomizing assembly provided herein;

FIG. 12 is a schematic view of a portion of the structure provided in FIG. 3;

FIG. 13 is a schematic view of another embodiment of the boss of FIG. 12 mated with the liquid inlet of the seal;

FIG. 14 is a graph showing the relationship between the thickness of the dense matrix/the pore size of the first micropores and the atomization amount of the heat-generating body provided in the present application.

Detailed Description

The present application is described in further detail below with reference to the drawings and examples. It is specifically noted that the following examples are only for illustration of the present application, but do not limit the scope of the present application. Likewise, the following embodiments are only some, but not all, of the embodiments of the present application, and all other embodiments obtained by one of ordinary skill in the art without making any inventive effort are within the scope 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 explicitly or implicitly include at least one such feature. 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, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. 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 such phrases 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.

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

The electronic atomizing device can be used for atomizing liquid matrix. The electronic atomizing device comprises an atomizing assembly 1 and a power supply assembly 2 which are connected with each other. The atomizing assembly 1 is used for storing a liquid aerosol-generating substrate and atomizing the aerosol-generating substrate to form aerosol which can be inhaled by a user, wherein the liquid aerosol-generating substrate can be liquid substrates such as liquid medicine, plant grass leaf liquid and the like; the atomizing assembly 1 is particularly useful in various fields, such as medical treatment, electro-aerosolization, and the like. The power supply assembly 2 includes a battery (not shown), an airflow sensor (not shown), a controller (not shown), and the like; the battery is used to power the atomizing assembly 1 to enable the atomizing assembly 1 to heat the atomizing aerosol generating substrate to form an aerosol; the air flow sensor is used for detecting air flow change in the electronic atomization device, and the controller controls the atomization assembly 1 to work or not according to the air flow change detected by the air flow sensor. The atomizing assembly 1 and the power supply assembly 2 can be integrally arranged, can be detachably connected and are designed according to specific needs.

Referring to fig. 2, fig. 2 is a schematic cross-sectional structure of the atomizing assembly provided in the present application along a first direction.

The atomizing assembly 1 includes a housing 10, an atomizing base 11, and a heat generating body 12. The housing 10 has a liquid storage chamber 13 for storing a liquid aerosol-generating substrate, and an outlet channel 14, the liquid storage chamber 13 being arranged around the outlet channel 14. The end of the housing 10 also has a suction opening 15 which communicates with the outlet channel 14. The housing 10 has a receiving chamber 16 on the side of the liquid storage chamber 13 facing away from the suction opening 15, and the atomizing base 11 is arranged in the receiving chamber 16. The atomizing base 11 includes an atomizing top base 111 and an atomizing base 112; optionally, the material of the atomizing base 11 is plastic. The atomization footstock 111 and the atomization base 112 cooperate to form a containing cavity 113; that is, the atomizing base 11 has a housing cavity 113. Specifically, the atomization top base 111 is provided with a receiving groove 1111, and the receiving groove 1111 cooperates with the atomization base 112 to form a receiving cavity 113. The heating element 12 is disposed in the housing cavity 113 and is disposed in the housing cavity 16 together with the atomizing base 11.

The atomization top seat 111 is provided with two lower liquid channels 114, specifically, the top wall of the atomization top seat 111 is provided with two lower liquid channels 114, and the two lower liquid channels 114 are arranged at two sides of the air outlet channel 14. One end of the lower liquid channel 114 communicates with the liquid storage chamber 13, and the other end communicates with the accommodating chamber 113, that is, the lower liquid channel 114 communicates the liquid storage chamber 13 with the accommodating chamber 113, so that the aerosol-generating substrate channel lower liquid channel 114 in the liquid storage chamber 13 enters the heating body 12. That is, the heat-generating body 12 is in fluid communication with the reservoir 13, the heat-generating body 12 being adapted to absorb and heat the aerosol-generating substrate.

In other embodiments, the liquid storage chamber 13 may be a separate member, such as a liquid storage bottle, instead of the case 10, and the liquid supply to the heating element 12 may be achieved by providing the separate liquid storage chamber 13 outside the case 10 through a needle tube and in the internal space of the case 10.

In this embodiment, the surface of the heating element 12 away from the liquid storage cavity 13 is an atomization surface, an atomization cavity 115 is formed between the atomization surface of the heating element 12 and the inner wall surface of the accommodating cavity 113, and the atomization cavity 115 is communicated with the air outlet channel 14. An air inlet 116 is provided on the atomizing base 112 to allow the outside to communicate with the atomizing chamber 115. The external air enters the atomization cavity 115 through the air inlet 116, and the aerosol atomized by the heating body 12 enters the air outlet channel 14, finally reaches the suction port 15 and is sucked by a user.

The atomizing assembly 1 further includes a conductive member 17, and the conductive member 17 is fixed to the atomizing base 112. One end of the conducting member 17 is electrically connected to the heating element 12, and the other end is electrically connected to the power supply unit 2, so that the heating element 12 can operate.

The atomizing assembly 1 further includes a seal 18 and a seal cap 19. The sealing member 18 is disposed between the heating element 12 and the atomization footstock 111, and is used for sealing between the heating element 12 and the liquid discharging channel 114 to prevent liquid leakage. That is, the sealing member 18 is used to seal the periphery of the heat-generating body 12. The seal top cover 19 is disposed on the surface of the atomization top seat 111, which is close to the liquid storage cavity 13, and is used for sealing the liquid storage cavity 13, the atomization top seat 111 and the air outlet channel 14, so as to prevent liquid leakage. Alternatively, the material of the seal 18 and the seal cap 19 is silicone or fluororubber.

Referring to fig. 3, fig. 3 is a schematic cross-sectional structure of the atomizing assembly provided in the present application along the second direction.

A gap exists between the outer side surface of the atomization footstock 111 and the inner side surface of the housing 10, and external air entering from the air inlet 116 enters the atomization cavity 115 to carry atomized aerosol of the heating element 12, and enters the air outlet channel 14 through the gap between the outer side surface of the atomization footstock 111 and the inner side surface of the housing 10.

Referring to fig. 4 and 5, fig. 4 is a schematic structural view of a heating element provided in the present application, and fig. 5 is a schematic structural view of a dense substrate in the heating element provided in fig. 4.

The heat-generating body 12 includes a sheet-like base 125 and a heat-generating element 126. The heating element 126 is disposed on the sheet-like substrate 125. The sheet-like substrate 125 may be a sheet-like dense substrate having a thickness of 1mm or less, for example, a sheet-like glass sheet; the sheet-like substrate 125 may be a sheet-like porous ceramic substrate having a thickness of 2mm or less. The two sides of the sheet-shaped substrate 125 with bending strength lower than 100MPa are directly abutted against hard objects to be easily broken, and the breaking condition of the sheet-shaped substrate 125 can be reduced or avoided by adopting the protective structure described later in the application. The heating element 126 may be a heating sheet, a heating film, a heating net, or the like, and may be provided on the surface of the sheet-like substrate 125 or embedded in the sheet-like substrate 125, and specifically designed as needed. In some embodiments, the sheet substrate 125 itself may generate heat, a ceramic heat generating body that generates heat itself, where the heat generating element is a combination of an electrode and the sheet substrate 125.

Wherein the sheet-like substrate 125 defines a sheet-like shape relative to the block-like body, the ratio of the length of the sheet-like substrate 125 to the thickness is greater relative to the length of the block-like body. In the present embodiment, the sheet-like base 125 has a flat plate shape. In other embodiments, the sheet-like substrate 125 may be arc-shaped, tubular, etc., such as a cylinder, and other structures in the atomizing assembly 1 may be configured to mate with specific structures of the sheet-like substrate 125. The following description will take the sheet-like substrate 125 as an example of a flat plate.

The sheet-like substrate 125 includes opposite liquid-absorbing and atomizing surfaces, and in this embodiment, heating elements 126 are provided on the atomizing surfaces. The sheet-like substrate 125 in the heat-generating body 12 is a sheet-like dense substrate 121 having a thickness of 1mm or less, and the heat-generating element 126 in the heat-generating body 12 is a heat-generating film 122 described in detail below.

Referring to fig. 5, dense matrix 121 includes a first surface 1211 and a second surface 1212 opposite first surface 1211; the dense substrate 121 is provided with a plurality of first micro-holes 1213, and the first micro-holes 1213 are through holes penetrating the first surface 1211 and the second surface 1212. Referring to fig. 4, a heat generating film 122 is formed on the first surface 1211; the resistance of the heat generating film 122 is 0.5 ohm-2 ohm at normal temperature, wherein the normal temperature is 25 ℃. It will be appreciated that the dense substrate 121 serves as a structural support and the heat generating membrane 122 is electrically connected to the power supply assembly 2. When the power of the electronic atomizing device is 6-8.5 watts and the voltage range of the battery is 2.5-4.4 volts, the resistance range of the heating film 122 of the heating body 12 at normal temperature is 0.5-2 ohms in order to reach the working resistance of the battery. Wherein, the surface of the compact substrate 121 provided with the heating film 122 is an atomization surface, that is, the first surface 1211 of the compact substrate 121 is an atomization surface, and the second surface 1212 of the compact substrate 121 is a liquid absorption surface; the first micro-pores 1213 are used to direct the aerosol-generating substrate from the liquid-absorbing surface to the aerosolizing surface, the first micro-pores 1213 having capillary action.

The first micropores 1213 with capillary force are arranged on the compact substrate 121, so that the porosity of the heating element 12 can be accurately controlled, and the consistency of products is improved. That is, in mass production, the porosity of the dense substrate 121 in the heat generating body 12 is substantially uniform, and the thickness of the heat generating film 122 formed on the dense substrate 121 is uniform, so that the atomization effect of the electronic atomization device shipped from the same lot is uniform.

The aerosol-generating substrate in the liquid storage chamber 13 reaches the dense substrate 121 of the heating body 12 through the liquid discharging channel 114, and the aerosol-generating substrate is guided from the second surface 1212 to the first surface 1211 by utilizing the capillary force of the first micropores 1213 on the dense substrate 121, so that the aerosol-generating substrate is atomized by the heating film 122; that is, the first micro-hole 1213 communicates with the reservoir 13 through the lower liquid passage 114. Wherein, the material of the compact substrate 121 can be glass or compact ceramic; when the dense substrate 121 is glass, it may be one of ordinary glass, quartz glass, borosilicate glass, and photosensitive lithium aluminosilicate glass.

The following description will be made with reference to the material of the dense matrix 121 as glass.

In a specific embodiment, the extending direction of the first micropores 1213 may be perpendicular to the thickness direction of the dense substrate 121, or may form an included angle with the thickness direction of the dense substrate 121, and the included angle may be in the range of 80 degrees to 90 degrees. The longitudinal section of the first micro-hole 1213 may be rectangular, trapezoidal, dumbbell-shaped with both large ends and small middle, etc. The longitudinal cross-sectional shape and the extending direction of the first micro-holes 1213 may be designed as needed. Since the first micro-holes 1213 are provided in a regular geometric shape, the volume of the first micro-holes 1213 in the heating body 12 can be calculated, so that the porosity of the whole heating body 12 can also be calculated, and the consistency of the porosity of the heating body 12 of the similar product can be well ensured.

The dense substrate 121 may be provided in a regular shape such as a rectangular plate shape, a circular plate shape, or the like. In the present embodiment, the plurality of first micro holes 1213 provided on the dense substrate 121 are arranged in an array; that is, the plurality of first micro holes 1213 provided on the dense substrate 121 are regularly arranged, and the center-to-center distances between adjacent first micro holes 1213 among the plurality of first micro holes 1213 are the same. Optionally, the plurality of first micro-holes 1213 are arranged in a rectangular array; or a plurality of first micro-holes 1213 arranged in a circular array; or a plurality of first micro-holes 1213, are arranged in a hexagonal array. Wherein the pore diameters of the plurality of first micro pores 1213 may be the same, and can be designed according to the needs.

The first surface 1211 and the second surface 1212 of the dense substrate 121 each comprise a smooth surface, the first surface 1211 being planar. That is, the first surface 1211 of the dense substrate 121 is a smooth surface and is planar, the heat generating film 122 is formed on the first surface 1211, and the smooth surface 1211 facilitates deposition of the metal material into a film with a small thickness.

In one embodiment, the first surface 1211 and the second surface 1212 of the dense substrate 121 are smooth surfaces, each being planar, and the first surface 1211 and the second surface 1212 of the dense substrate 121 are disposed in parallel; the first micro-holes 1213 penetrate through the first surface 1211 and the second surface 1212, the axis of the first micro-holes 1213 is perpendicular to the first surface 1211 and the second surface 1212, and the cross section of the first micro-holes 1213 is circular; at this time, the thickness of the dense matrix 121 is equal to the length of the first micro-holes 1213. It can be appreciated that the second surface 1212 is parallel to the first surface 1211, and the first micro-holes 1213 extend from the first surface 1211 to the second surface 1212, so that the production process of the dense substrate 121 is simple and the cost is reduced. The thickness of dense matrix 121 is the distance between first surface 1211 and second surface 1212. The first micro-holes 1213 may be through holes having uniform pore diameters, or through holes having non-uniform pore diameters, as long as the variation range of the pore diameters is within 50%. For example, the first micro-holes 1213 opened in the glass by laser induction and etching are generally large in both end hole diameter and small in middle hole diameter due to the limitation of the manufacturing process. Therefore, it is only necessary to ensure that the aperture of the middle portion of the first micropores 1213 is not less than half the aperture of the both end ports.

In another embodiment, the first surface 1211 of the dense substrate 121 is a smooth surface and planar to facilitate deposition of a metallic material into a film with a reduced thickness. The second surface 1212 of the dense substrate 121 is a smooth surface, and the second surface 1212 may be a non-planar surface, such as a bevel, a cambered surface, a serrated surface, etc., and the second surface 1212 may be designed according to specific needs, only by penetrating the first micro-holes 1213 through the first surface 1211 and the second surface 1212.

Compared with the prior cotton core heating element and porous ceramic heating element, the heating element 12 with the microporous sheet structure provided by the application has the advantages that the liquid supply channel is shorter, the liquid supply speed is faster, and the liquid leakage risk is larger. Therefore, the inventors of the present application studied the effect of the ratio of the thickness of the dense substrate 121 to the pore diameter of the first micropores 1213 on the liquid-guiding of the heat-generating body 12, and as a result, found that increasing the thickness of the dense substrate 121, decreasing the pore diameter of the first micropores 1213, and increasing the liquid-feeding rate, contradicted by each other, can reduce the liquid-leakage risk but also decrease the liquid-feeding rate. Therefore, the thickness of the compact substrate 121, the aperture of the first micropores 1213 and the ratio of the thickness of the compact substrate 121 to the aperture of the first micropores 1213 are designed, so that when the heating element 12 works at the power of 6 watts to 8.5 watts and the voltage of 2.5 volts to 4.4 volts, sufficient liquid supply can be realized, and liquid leakage can be prevented. Wherein the thickness of dense matrix 121 is the distance between first surface 1211 and second surface 1212.

In addition, the present inventors studied the ratio of the hole center distance of the adjacent first micro holes 1213 to the aperture of the first micro holes 1213, and found that if the ratio of the hole center distance of the adjacent first micro holes 1213 to the aperture of the first micro holes 1213 is too large, the dense substrate 121 is also easy to process with a large strength, but the porosity is too small, which easily results in insufficient liquid supply; if the ratio of the hole center distance of adjacent first micro holes 1213 to the pore diameter of the first micro holes 1213 is too small, the porosity is large, the liquid supply amount is sufficient, but the strength of the dense matrix 121 is small and the processing is not easy; therefore, the present application further designs a ratio of the hole center distance of the adjacent first micro holes 1213 to the aperture of the first micro holes 1213, so as to enhance the strength of the dense substrate 121 as much as possible on the premise of satisfying the liquid supply capability.

In the following, when the material of the dense substrate 121 is glass and the first surface 1211 and the second surface 1212 of the dense substrate 121 are smooth planes and are arranged in parallel, the thickness of the dense substrate 121, the pore diameter of the first micropores 1213, the ratio of the thickness of the dense substrate 121 to the pore diameter of the first micropores 1213, and the ratio of the center distance between two adjacent first micropores 1213 to the pore diameter of the first micropores 1213 will be described.

The dense matrix 121 has a thickness of 0.1 mm to 1 mm. When the thickness of the dense matrix 121 is greater than 1 mm, the liquid supply requirement cannot be satisfied, resulting in a decrease in the amount of aerosol and a large amount of heat loss, and the cost of providing the first micropores 1213 is high; when the thickness of the dense substrate 121 is less than 0.1 mm, the strength of the dense substrate 121 cannot be ensured, which is disadvantageous for improving the performance of the electronic atomizing device. Preferably, the dense matrix 121 has a thickness of 0.2 mm to 0.5 mm. The first micropores 1213 in the dense matrix 121 have a pore size of 1 micron to 100 microns. When the pore diameter of the first micropores 1213 is smaller than 1 micron, the liquid supply requirement cannot be satisfied, resulting in a decrease in the aerosol amount; when the pore diameter of the first micropores 1213 is larger than 100 μm, the aerosol-generating substrate easily flows out from within the first micropores 1213 to the first surface 1211 to cause leakage of liquid, resulting in a decrease in atomization efficiency. Preferably, the method comprises the steps of, the first micropores 1213 have a pore size of 20 microns to 50 microns. It will be appreciated that the thickness of the dense matrix 121 and the pore size of the first micropores 1213 are selected according to actual needs.

The ratio of the thickness of the dense matrix 121 to the pore size of the first micropores 1213 is 20:1-3:1; preferably, the ratio of the thickness of the dense matrix 121 to the pore size of the first micropores 1213 is 15:1 to 5:1 (see fig. 14, and experiments show that the ratio of the thickness of the dense matrix 121 to the pore size of the first micropores 1213 is 15:1 to 5:1, so that the atomization effect is better). When the ratio of the thickness of the dense substrate 121 to the pore diameter of the first micropores 1213 is greater than 20:1, the aerosol-generating substrate supplied by the capillary force of the first micropores 1213 is difficult to satisfy the atomization demand of the heating body 12, not only is dry combustion easy to result, but also the amount of aerosol generated by single atomization is reduced; when the ratio of the thickness of the dense matrix 121 to the pore size of the first micropores 1213 is less than 3:1, the aerosol-generating substrate easily flows out from within the first micropores 1213 to the first surface 1211, and the aerosol-generating substrate is wasted, resulting in a decrease in atomization efficiency, and thus a decrease in the total aerosol amount.

The ratio of the center distance between every two adjacent first micropores 1213 to the aperture of each first micropore 1213 is 3:1-1.5:1, so that the strength of the dense matrix 121 is improved as much as possible on the premise that the first micropores 1213 on the dense matrix 121 meet the liquid supply capacity; preferably, the method comprises the steps of, the ratio of the center distance of the holes between two adjacent first micro holes 1213 to the aperture of the first micro holes 1213 is 3:1-2:1; more preferably, the ratio of the hole center distance between two adjacent first micro holes 1213 to the pore diameter of the first micro holes 1213 is 3:1 to 2.5:1.

In one embodiment, it is preferred that the ratio of the thickness of the dense substrate 121 to the pore size of the first micropores 1213 is 15:1 to 5:1, and the ratio of the pore center distance between two adjacent first micropores 1213 to the pore size of the first micropores 1213 is 3:1 to 2.5:1.

It is understood that the thickness of the dense substrate 121, the pore diameter of the first micropores 1213, the ratio of the thickness of the dense substrate 121 to the pore diameter of the first micropores 1213, and the ratio of the center distance between adjacent first micropores 1213 to the pore diameter of the first micropores 1213 may be combined as required.

Since the dense substrate 121 in the heating element 12 is a dense material, it can function as a structural support. Compared with the spring-shaped metal heating wire of the existing cotton core heating element and the metal thick film wire of the porous ceramic heating element, the strength and the thickness of the heating film 122 in the heating element 12 are not required, and the heating film 122 can be made of a metal material with low resistivity.

In one embodiment, the heat generating film 122 formed on the first surface 1211 of the dense substrate 121 is a thin film, and the thickness of the heat generating film 122 ranges from 200 nm to 5 μm, i.e., the thickness of the heat generating film 122 is thin; preferably, the method comprises the steps of, the thickness of the heating film 122 ranges from 200 nm to 1 μm; more preferably, the thickness of the heat generating film 122 ranges from 200 nm to 500 nm. When the heat generating film 122 is a thin film, the heat generating film 122 has a plurality of second micro holes 1221 which are in one-to-one correspondence with and communicate with the plurality of first micro holes 1213. Further, the heat generating film 122 is also formed on the inner surface of the first micro-holes 1213; preferably, the heat generating film 122 is also formed on the entire inner surface of the first micro-holes 1213 (the structure is as shown in fig. 4). A heat generating film 122 is provided at an inner surface of the first micro-hole 1213, so that the aerosol-generating substrate can be atomized within the first micropores 1213, which is advantageous for improving the atomization effect.

The thinner the heating film 122 is, the smaller the effect on the aperture of the first micro-hole 1213 is, thereby achieving a better atomization effect; the thinner the heating film 122 is, the less the heat absorption of the heating film 122 itself, the less the electric heating loss, and the faster the heating element 12 is. On the basis that the resistance of the heating film 122 at normal temperature is 0.5 ohm-2 ohm, the application adopts a metal material with low conductivity to form a thinner metal film, so that the influence on the aperture of the first micropore 1213 is reduced as much as possible. Optionally, the resistivity of the heat generating film 122 is not greater than 0.06×10 ^-6 Omega.m. The metal material of the heating film 122 with low conductivity is silver or silver alloy or copper alloy or aluminum alloy or gold alloy; alternatively to this, the method may comprise, the material of the heating film 122 may be aluminum or aluminum alloy or gold alloy. When the electric heating is performed, the heating film 122 can be heated up rapidly, the aerosol-generating substrate within the first micropores 1213 is directly heated to achieve efficient atomization.

Further, the present inventors have found that various flavors and fragrances and additives, sulfur, phosphorus, chlorine, and other elements are contained in the liquid aerosol-generating substrate, and that silver and copper are susceptible to corrosion failure when the heat generating film 122 is electrically heated. Gold is very chemically inert and the aluminum surface forms a dense oxide film, both of which are very stable in the liquid aerosol-generating substrate, preferably as the heat generating film 122 material.

The heat generating film 122 may be formed on the first surface 1211 of the dense substrate 121 by physical vapor deposition (e.g., magnetron sputtering, vacuum evaporation, ion plating) or chemical vapor deposition (ion-assisted chemical deposition, laser-assisted chemical deposition, metal-organic compound deposition). It is understood that the heat generating film 122 is formed such that it does not cover the first micro-holes 1213, i.e., the first micro-holes 1213 penetrate the heat generating film 122. The heat generating film 122 is formed on the inner surface of the first micro-holes 1213 at the same time as the heat generating film 122 is formed on the first surface 1211 of the dense substrate 121 by physical vapor deposition or chemical vapor deposition. When the heating film 122 is formed on the first surface 1211 of the compact substrate 121 by using the magnetron sputtering method, the metal atoms are perpendicular to the first surface 1211 and parallel to the inner surface of the first micropores 1213 during the magnetron sputtering, so that the metal atoms are easier to deposit on the first surface 1211; assuming that the thickness of the heat generating film 122 formed by depositing metal atoms on the first surface 1211 is 1 micron, the thickness of the metal atoms deposited on the inner surface of the first micro-holes 1213 is much smaller than 1 micron, even less than 0.5 micron; the thinner the thickness of the heat generating film 122 deposited on the first surface 1211, the thinner the thickness of the heat generating film 122 formed on the inner surface of the first micro-holes 1213, the less the influence on the aperture of the first micro-holes 1213. Since the thickness of the heat generating film 122 is much smaller than the pore diameter of the first micro-pores 1213, and the thickness of the portion of the heat generating film 122 deposited in the first micro-pores 1213 is smaller than the thickness of the portion deposited on the first surface 1211 of the dense substrate 121, the effect of the deposition of the heat generating film 122 in the first micro-pores 1213 on the pore diameter of the first micro-pores 1213 is negligible.

Referring to fig. 6 and 7, fig. 6 is a schematic structural view of the heat generating body provided in fig. 4 as seen from the atomizing face side, and fig. 7 is a schematic structural view of the heat generating body provided in fig. 4 as seen from the liquid suction face side.

The heating element 12 further includes two electrodes 123; that is, the heat-generating body 12 includes a dense substrate 121, a heat-generating film 122, and two electrodes 123. The dense substrate 121 includes an atomizing face and a liquid suction face opposite the atomizing face. The heating film 122 and the electrode 123 are arranged on the atomizing surface and are electrically connected with each other; that is, the heating element 126 and the electrode 123 are provided on the atomizing surface and are electrically connected to each other. The dense substrate 121 is provided with a plurality of first micro holes 1213, that is, the plurality of first micro holes 1213 may be arranged in an array manner on the entire surface of the dense substrate 121, or the plurality of first micro holes 1213 may be arranged in an array manner only on a part of the surface of the dense substrate 121. Wherein, the heating film 122 is a thin film, and the heating film 122 has a plurality of second micro holes 1221 which are in one-to-one correspondence with and communicate with the plurality of first micro holes 1213.

The present inventors have studied and found that the larger the number of first micro-holes 1213 provided on the dense substrate 121, the lower the strength of the dense substrate 121 is, which is disadvantageous for the application of the heat generating body 12 to a product. Therefore, it is preferable that the plurality of first micro holes 1213 are provided in an array arrangement only on a part of the surface of the dense substrate 121, as described in detail below.

The dense matrix 121 is provided with a microwell array region 1218 and a blank region 1219 adjacent to the microwell array region 1218. The microwell array region 1218 has a plurality of first microwells 1213, the first microwells 1213 being through-holes that extend through the atomizing surface and the liquid suction surface, first micro-pores 1213 are used to generate an aerosol the substrate is guided from the liquid-absorbing surface to the atomizing surface. The electrode 123 is disposed in the clear zone 1219 of the atomizing face. The heating film 122 is disposed on the dense substrate 121 and electrically connected to the electrode 123 for heating the atomized aerosol-generating substrate; specifically, the heat generating film 122 (i.e., the heat generating element 126) is disposed in the microwell array region 1218 of the atomizing face. Wherein the blank 1219 of the meniscus is adapted to cooperate with the seal 18, the blank 1219 of the meniscus being at least partially covered by the seal 18. That is, the seal 18 is disposed on the liquid-absorbing surface of the dense substrate 121 and covers at least a portion of the liquid-absorbing level of the blank 1219.

By providing the dense substrate 121 with a microwell array region 1218 and a blank region 1219 adjacent to the microwell array region 1218, it is understood that the blank region 1219 is not provided with first microwells 1213, the number of first micro-holes 1213 on the dense substrate 121 is reduced, thereby improving the strength of the dense substrate 121 in the heat generating body 12 and reducing the production cost of providing the first micro-holes 1213 on the dense substrate 121. And the blank 1219 of the liquid suction surface of the dense substrate 121 is fitted with the sealing member 18, and the sealing member 18 prevents the dense substrate 121 in the heat-generating body 12 from being broken while achieving sealing.

In one embodiment, the blank 1219 is disposed about the microwell array area 1218 for one revolution. The micro-pore array region 1218 in the dense matrix 121 serves as an atomization zone covering the heat generating membrane 122 and the peripheral region of the heat generating membrane 122, that is, the region substantially covering the temperature of the atomized aerosol generating substrate, making full use of thermal efficiency. The heat-generating body 12 is divided into different functional regions (the micro-pore array region 12218 and the blank 1219 have different functions), according to different functions, the structure is optimized maximally, so that high heat efficiency is met, and strength requirements and sealing requirements are met.

Specifically, the blank 1219 includes two first sub-blank 1219a and two second sub-blank 1219b, the two first sub-blank 1219a being located on opposite sides of the microwell array 1218 in the first direction, the two second sub-white areas 1219b are located on opposite sides of the micro-hole array area 1218 along a second direction, respectively, which is perpendicular to the first direction. The width of the first sub-blanking area 1219a is greater than the width of the second sub-blanking area 1219 b. Wherein the width of the first sub-blank area is 2.1mm-2.6mm; the width of the second sub-blank 1219b is 0.5mm or more. It will be appreciated that the area surrounding the micropore array region 1218 of the dense substrate 121 in the present application has a size greater than the pore size of the first micropores 1213, which can be referred to as a blank space; that is, the blank region 1219 in this application is a region where the first micro holes 1213 may be formed without forming the first micro holes 1213, rather than a region where the first micro holes 1213 cannot be formed at the periphery of the micro hole array region 1218. In one embodiment, the spacing between the first micro-holes 1213 nearest to the edge of the dense substrate 121 and the edge of the dense substrate 121 is greater than the pore size of the first micro-holes 1213 to consider that a blank zone 1219 is provided in the circumferential direction of the micro-hole array zone 1218.

In one embodiment, dense matrix 121 is rectangular flat plate-like, the plurality of first micro holes 1213 in the micro hole array area 1218 are arranged in a rectangular array; the widths of the two first sub-blank 1219a are the same, and the widths of the two second sub-blank 1219b are the same. It will be appreciated that the shape of the dense substrate 121 may be designed according to the need, the arrangement of the plurality of first micropores 1213 in the micropore array area 1218 may be designed according to the need, and the arrangement of the blank area 1219 and the size thereof may be designed according to the need, which is not limited in this application.

In an embodiment, the electrode 123 is disposed in the first sub-white area 1219a to ensure the continuity and stability of the electrode 123, and the electrode 123 disposed on the atomizing surface of the dense substrate 121 has a sufficiently large contact area with the conducting member 17 to ensure the stability of the electrical connection between the conducting member 17 and the electrode 123 of the heating element 12. It will be appreciated that setting the width of the first sub-blanking region 1219a to be 2.1mm-2.6mm facilitates disposing the electrode 123 at the first sub-blanking region 1219a. In addition, the first sub-margin 1219a may be used as a main clamping area for subsequent mounting, for example, the first sub-margin 1219a is clamped by the abutting portion of the ejector pin and the atomizing base 11, and therefore, the width of the first sub-margin 1219a is set to 2.1mm-2.6mm, which ensures that the first sub-margin 1219a can withstand sufficient clamping stress and that the atomizer 1 is not excessively wide due to the excessive length of the heating element 12. The electrode 123 is at least partially disposed in the first sub-margin 1219a (i.e., the electrode 123 is partially disposed in the margin and partially disposed in the micro-porous array region 1218), so long as an electrical connection to the via 17 can be achieved; preferably, the electrodes 123 are all disposed in the first sub-margin 1219a, reducing the assembly accuracy requirement between the electrodes 123 and the via 17.

It will be appreciated that the sealing member 18 is of annular configuration (see fig. 8 and 9 a), the sealing member 18 is of a certain width, and the width of the second sub-blank 1219b is set to be 0.5mm or more in order to enable the blank 1219 to cooperate with the sealing member 18, and thus to enable the blank 1219 of the liquid suction surface to be at least partially covered by the sealing member 18.

Referring to fig. 8 and 9a, fig. 8 is a schematic partial structure of the atomizing assembly shown in fig. 2, and fig. 9a is a schematic structure in another direction of fig. 8.

Referring to fig. 2, the atomizing top base 111 has a receiving groove 1111, the heat generating body 12 is disposed in the receiving groove 1111, and the sealing member 18 is at least partially disposed between the bottom wall of the receiving groove 1111 and the liquid suction surface of the heat generating body 12. The liquid-discharging passage 114 on the atomizing top base 111 communicates with the containing groove 1111 to allow the aerosol-generating substrate to enter the heating element 12. The heating element 12 and the sealing member 18 are provided in the housing groove 1111. Wherein the bottom wall of the receiving groove 1111 forms a holding portion (not shown). That is, the atomizing top base 111 has a holding portion, that is, the atomizing base 11 has a holding portion.

Specifically, the atomizing top base 111 and the atomizing base 112 clamp the heating element 12 from both sides of the liquid suction surface and the atomizing surface, respectively, and the sealing member 18 is clamped between the blank area of the heating element 12 and the atomizing top base 111; that is, the seal 18 is sandwiched between the blank space of the heating element and the atomizing base 11.

The atomizing assembly 1 further comprises a support member 120, and the support member 120 is disposed on a side of the heating element 12 away from the liquid storage cavity 13. The support 120 is fixed to the atomizing base 112. The supporting piece 120 cooperates with the abutting part to clamp the heating body 12; specifically, the support 120 and the abutting portion sandwich the sheet-like base 125 from opposite sides of the sheet-like base 125 of the heat generating body 12 in the thickness direction thereof, respectively. The two electrodes 123 of the heating element 12 are disposed on the surface of the sheet-like base 125 near the support 120. The sealing element 18 is at least partially positioned between the heating element 12 and the abutting portion; specifically, the seal 18 is at least partially located between the heat-generating body 12 and the bottom wall of the accommodation groove 1111. That is, the seal 18 is entirely located on the surface of the heat-generating body 12 near the abutting portion; or, the sealing member 18 is partially positioned on the surface of the heating element 12 close to the abutting part, and partially positioned on the side surface of the heating element 12; or, the sealing member 18 is partially located on the surface of the heat generating body 12 close to the abutting portion, partially located on the side surface of the heat generating body 12, and partially located on the surface of the heat generating body 12 away from the abutting portion, and specifically designed as needed.

The arrangement of the supporting member 120, the sealing member 18 and the atomizing base 11 protects the sheet heating element 12, which is called a protection structure of the heating element 12.

In another embodiment, the receiving groove 1111 may not be provided in the atomizing top base 111, so that the bottom wall of the receiving groove 1111 may be used as a holding portion, and the holding portion may be formed by other structures of the atomizing base 11, and may be engaged with the supporting member 120 to hold the heating element 12. In yet another embodiment, the end face of the cavity wall of the liquid storage cavity 13 close to the heating element 12 is abutted against the sealing member 18, and the end face of the cavity wall of the liquid storage cavity 13 close to the heating element 12 is matched with the supporting member 120 to clamp the heating element 12; that is, the end face of the chamber wall of the liquid storage chamber 13, which is close to the heating element 12, serves as an abutting portion (as shown in fig. 9b, fig. 9b is a schematic partial structure of another embodiment of the atomizing assembly provided in the present application). The manner of installation of the abutment is not limited to this, and is designed as needed.

The end of the heating element 12 may overlap the atomizing top base 111 and/or the atomizing base 112. The support 120 is at least partially disposed at an intermediate position of the heat generating body 12 (the intermediate position does not refer to the exact center of the heat generating body 12, but refers to other positions of the heat generating body 12 than the edge), instead of the edge of the heat generating body 12, to further fix the heat generating body 12. This is because the strength of the sheet-like heat generating body 12 is small, and if the edge of the heat generating body 12 is clamped, the middle suspended portion of the heat generating body 12 is too many, and the risk of breakage is large. In one embodiment, the supporting member 120 is at least partially disposed at a position corresponding to the electrode 123 of the heating element 12; wherein the electrode 123 of the heating element 12 is located at the intermediate position of the heating element 12.

The sealing member 18 covers at least the region of the heat-generating body 12 corresponding to the support 120. The sealing member 18 is provided with a liquid inlet 181, which exposes at least part of the heating element 12, i.e., at least a portion of the first plurality of micro-holes 1213 is exposed to be in fluid communication with the reservoir 13; that is to say, the liquid-absorbing surface of the heat-generating body 12 is at least partially exposed from the liquid inlet 181 of the sealing member 18 to absorb the aerosol-generating substrate. When the entire surface of the dense substrate 121 is provided with the first micro-holes 1213, the liquid inlet 181 exposes at least the first micro-holes 1213 corresponding to the atomization zone; when the dense substrate 121 is provided with a microwell array region 1218 and a blank region 1219, the liquid inlet 181 exposes at least the first microwells 1213 corresponding to the atomizing region in the microwell array region 1218, and preferably, the liquid inlet 181 completely exposes the entire microwell array region 1218 of the liquid suction surface.

The liquid inlet 181 on the sealing element 18 enables the liquid outlet channel 114 on the atomization footstock 111 to be communicated with the first micropore 1213 on the compact basal body 121; the lower liquid channel 114 communicates the liquid inlet 181 with the liquid storage cavity 13, the aerosol-generating substrate in the liquid storage chamber 13 enters the heating body 12 through the liquid-down channel 114 and the liquid inlet 181. That is, the liquid suction surface of the heating element 12 is in fluid communication with the liquid storage chamber 13 through the liquid inlet 181 of the sealing member 18. The heating element 12 and the atomizing base 112 cooperate to form an atomizing cavity 115, and specifically, an atomizing surface of the heating element 12 cooperates with the atomizing base 112 to form the atomizing cavity 115.

It will be appreciated that in other embodiments, the liquid inlet 181 on the seal 18 places the heater 12 in direct fluid communication with the liquid storage chamber 13; that is, the liquid-discharging passage 114 is not required, and the aerosol-generating substrate in the liquid storage chamber 13 can enter the heating element 12 only through the liquid inlet 181.

The support 120 is matched with the atomization seat 11 to fix the heating body 12; that is, the support 120 and the atomizing base 11 sandwich the heat generating body 12, and fix the heat generating body 12. Because the material of the compact substrate 121 in the heating element 12 is glass or compact ceramic, the clamping force for fixing the heating element 12 is too large, so that the heating element 12 is easy to break, and the heating element 12 is not beneficial to being applied to products. In order to solve this problem, the sealing member 18 is made to cover at least the region of the heating element 12 corresponding to the support member 120, and the sealing member 18 is made to function as a buffer member while sealing is achieved, so that excessive pressure of the support member 120 can be opposed to prevent the heating element 12 from being broken.

In one embodiment, a plurality of first micro holes 1213 are provided in an array arrangement over the entire surface of the dense substrate 121 in the heat generating body 12; that is, the heat generating film 122 and the electrode 123 each have second micropores 1221 corresponding to the plurality of first micropores 1213. Even if the entire surface of the dense substrate 121 is provided with the first micro-holes 1213, the sealing member 18 can buffer the force applied to the heating element 12 by the supporting member 120 by making the sealing member 18 cover at least the region of the heating element 12 corresponding to the supporting member 120, and can be applied to a product.

In another embodiment, the dense substrate 121 in the heat-generating body 12 has only a part of its surface provided with a plurality of first micro-holes 1213 in an array arrangement. That is, the dense substrate 121 is provided with a microwell array region 1218 and a blank region 1219 disposed around the microwell array region 1218; the microwell array region 1218 has a plurality of first microwells 1213 disposed therein, and the blank region 1219 has no first microwells 1213 disposed therein. The electrode 123 is at least partially arranged in a blank area 1219 of the atomization face, and the heating film 122 is arranged in a micropore array area 1218 of the atomization face; the seal 18 is disposed in the blank 1219 of the meniscus. It will be appreciated that since the support 120 is provided on the side of the heat-generating body 12 remote from the sealing member 18, that is, the support 120 is provided on the atomizing face; the heating film 122 is disposed in the micropore array area 1218 of the atomizing surface, so as to avoid the influence of the supporting member 120 on the atomizing efficiency and the taste, the supporting member 120 is disposed in the blank area of the atomizing surface, and the corresponding sealing member 18 is disposed in the blank area 1219 of the liquid suction surface and at least covers the area corresponding to the supporting member 120. Preferably, the seal 18 completely covers the blank 1219 of the meniscus, thereby simplifying the manufacturing process of the seal 18 and facilitating assembly; at this point, the inlet 181 on the seal 18 completely exposes the microwell array area 1218 of the meniscus. The sealing member 18 may be provided in both the blank 1219 and the micropore array 1218 (the heating element 12 may still atomize the aerosol-generating substrate) without considering the atomizing efficiency and the taste, so that the heating element 12 may be prevented from being broken. Wherein, the electrode 123 may be partially disposed in the blank 1219 and partially disposed in the micro-hole array 1218; the electrode 123 may be entirely disposed in the blank 1219, so that stable electrical connection between the electrode 123 and the heat generating film 122 and stable electrical connection between the electrode 123 and the conductive member 17 may be achieved, and the specific arrangement of the electrode 123 may be designed as required.

Referring to fig. 9a, the surface of the seal 18 remote from the reservoir 13 has two detents 182; the two positioning parts 182 are opposite and arranged at intervals; the heating element 12 is disposed between the two positioning portions 182. The two positioning portions 182 limit the heating element 12, and prevent the heating element 12 from shaking. In this embodiment, the surface of the sealing member 18 remote from the liquid storage chamber 13 includes a first side and a second side opposite to the first side, and third and fourth sides connecting the first and second sides; the positioning part 182 is in a long strip shape, one is arranged on the first side edge, and the other is arranged on the second side edge; the distance between the first end and the third side of the positioning portion 182 is equal to or greater than zero, the distance between the second end and the fourth side of the positioning portion 182 is equal to or greater than zero, and the distance between the first end and the third side of the positioning portion 182 is equal to or greater than the distance between the second end and the fourth side of the positioning portion 182. The specific arrangement of the positioning portion 182 may be designed as needed, and the heating element 12 may be limited.

Referring to fig. 2, 8 and 9a, the conducting member 17 is a thimble, one end of the thimble is abutted against the electrode of the heating element 12, and the other end of the thimble is electrically connected with the power supply assembly 2.

In one embodiment, the support 120 comprises two conductive supports that respectively abut the two electrodes 123. The two conductive supporting pieces are two ejector pins and are rigidly fixed on the atomizing base 11. That is, the ejector pins simultaneously function as the supporting pieces 120. The sealing member 18 covers at least the region of the heat-generating body 12 where the liquid-absorbing surface corresponds to the ejector pin. Specifically, the atomizing top base 111 has a receiving groove 1111, the heating element 12 is disposed in the receiving groove 1111, the sealing member 18 is disposed between the bottom wall of the receiving groove 1111 and the liquid suction surface of the heating element 12, and the ejector pin cooperates with the atomizing top base 111 to clamp the heating element 12, thereby fixing the heating element 12.

Referring to fig. 10, fig. 10 is a schematic partial structure of another embodiment of an atomizing assembly according to the present disclosure.

The construction of the atomizing assembly 1 provided in fig. 10 is substantially the same as the construction of the atomizing assembly 1 provided in fig. 2, except for the arrangement of the pass-through member 17 and the support member 120.

In another embodiment, the conducting member 17 is a spring or a spring needle, and is fixed on the atomizing base 112. The atomizing base 112 is abutted against the atomizing face of the heat generating body 12, and the atomizing base 112 serves as the supporting member 120 at the same time. Optionally, the atomizing base 112 abuts the blank 1219 of the atomizing surface of the heating element 12, so as to facilitate atomizing efficiency and mouthfeel. Specifically, the atomizing base 112 includes a body and a support column disposed on the body, the support column being in abutment with the atomizing face of the heating element 12 (as shown in fig. 10); or, the atomization base 112 comprises a body and a hollow boss arranged on the body, and the hollow boss is abutted with the atomization surface of the heating body 12; the specific structure of the atomizing base 112 may be designed as required, and the heating element 12 may be clamped and fixed in cooperation with the atomizing top base 111.

Referring to fig. 11, fig. 11 is a schematic partial structure of another embodiment of an atomizing assembly according to the present disclosure.

The construction of the atomizing assembly 1 provided in fig. 11 is substantially the same as the construction of the atomizing assembly 1 provided in fig. 2, except for the arrangement of the pass-through member 17 and the support member 120.

In yet another embodiment, the conducting member 17 is a spring or a spring needle, and is fixed on the atomizing base 112. The supporting member 120 has an annular structure independently connected to the atomizing base 11, and a surface of the supporting member 120 abuts against the atomizing surface of the heating element 12. Optionally, the supporting member 120 abuts against the blank 1219 of the atomizing surface of the heating element 12, so as to facilitate the atomizing efficiency and the taste. Specifically, the supporting member 120 is disposed in the receiving groove 1111 of the atomization footstock 111 by being clamped or is disposed in the receiving groove 1111 of the atomization footstock 111 by being supported by the atomization base 112. In the assembly process, the sealing member 18 and the heating element 12 are sequentially arranged in the accommodating groove 1111 of the atomization footstock 111, and then the supporting member 120 is clamped with the accommodating groove 1111 or arranged in the accommodating groove 1111 through the atomization base 112; the heating element 12 is clamped and fixed between the support 120 and the atomizing top base 111.

Referring to fig. 12, fig. 12 is a schematic view of a partial structure provided in fig. 3.

Typically, the material of the atomizing base 11 is plastic, and the material of the sealing member 18 is silica gel or fluororubber. In the atomization process of the thin heating element 12, external air easily enters the liquid storage cavity 13 through the first micropores 1213 on the heating element 12, namely, bubbles flow back from the atomization surface of the heating element 12 through the first micropores 1213, and the bubbles easily adhere to the silica gel piece to form large bubbles, namely, the flowing back bubbles easily adhere to the side surface of the liquid inlet 181 of the sealing piece 18 (the periphery of the liquid suction surface of the heating element 12) to form large bubbles, so that the liquid dropping is affected, and the liquid dropping is unsmooth. Because the bubbles are not easy to adhere to the atomizing base 11 (plastic part), the influence of the backflow bubbles on the liquid can be reduced by reducing the thickness of the liquid inlet 181 of the sealing part 18 (silica gel part). To solve this problem, the side surface of the liquid inlet 181 may have a lyophilic structure. The lyophile structure may improve the hydrophilicity and/or lipophilicity of the sides of the liquid inlet 181 such that the sides of the liquid inlet 181 have a smaller contact angle and a stronger wettability with the aerosol-generating substrate. The lyophilic structure is a microstructure formed by modifying the side surface of the liquid inlet 181. In an embodiment, the lyophilic structure is an isolation layer at least covering a portion of the side surface of the liquid inlet 181, so as to reduce the influence of the reflux bubbles on the liquid; wherein the material of the barrier layer is more wettable than the material of the seal 18, or the contact angle of the material of the barrier layer with the aerosol-generating substrate is less than the contact angle of the material of the seal 18 with the aerosol-generating substrate.

In one embodiment, the isolation layer is a coating or patch disposed on the side of the inlet 181. The material of the isolation layer is one of polysiloxane and vinyl acetate, and the hydrophilicity and/or lipophilicity of the materials are better than those of silica gel and fluororubber.

In one embodiment, the bottom wall of the accommodating groove 1111 of the atomization footstock 111 has a protrusion 117, that is, the protrusion 117 is disposed on the surface of the abutting portion near the sealing member 18. The boss 117 covers the liquid inlet 181. Optionally, the surface of the protruding portion 117 is provided with a coating, and the coating is made of one of polysiloxane and vinyl acetate, so that the influence of reflux bubbles on the liquid discharge is reduced; or the material of the bulge 117 is one of plastic, glass and silicon, and the hydrophilia of the materials is better than that of silica gel and fluororubber and/or lipophilicity, so that the influence of reflux bubbles on the liquid is reduced; or, the material of the protruding part 117 is one of plastic, glass and silicon, and the surface of the protruding part 117 is provided with a coating, and the material of the coating is one of polysiloxane and vinyl acetate, so that the influence of backflow bubbles on the liquid discharge is reduced. Alternatively to this, the method may comprise, the protruding part 117 and the atomization footstock 111 are integrally formed, glued or clamped, specifically, the design is carried out according to the needs.

When the isolation layer is the protruding portion 117 of the atomizing base 11, and the protruding portion 117 is made of one of plastic, glass and silicon, the protruding portion 117 covers at least part of the side surface of the liquid inlet 181, so as to reduce the contact area between the air bubbles flowing back and the liquid inlet 181 of the sealing member 18, and further reduce the influence of the air bubbles flowing back on the liquid. Wherein, a gap exists between the end surface of the protruding part 117 near the heating element 12 and the heating element 12 to prevent the protruding part 117 of the atomization footstock 111 from directly pressing force on the heating element 12. Referring to fig. 8, the liquid inlet 181 of the seal 18 is not uniform in size in the extending direction thereof. Specifically, the liquid inlet 181 includes a first liquid inlet section and a second liquid inlet section that are mutually communicated; the first liquid inlet section is located one side of the second liquid inlet section away from the heating body 12, and the size of the first liquid inlet section is larger than that of the second liquid inlet section, and the side face of the liquid inlet 181 forms a step structure. That is, a notch is provided around the liquid inlet 181 on the surface of the sealing member 18 remote from the heating element 12 to form a stepped structure on the side of the liquid inlet 181. Referring to fig. 12, the end of the boss 117 abuts against the connection surface of the first liquid inlet section and the second liquid inlet section, i.e., the end of the boss 117 abuts against the bottom surface of the step structure; and the boss 117 completely covers the side of the first inlet section.

Further, the surface of the boss 117 remote from the lower liquid passage 114 has a surrounding bone 1172. The surrounding bone 1172 covers at least part of the side surface of the second liquid inlet section, so that the contact area between the bubbles and the liquid inlet 181 is further reduced, and the influence of the bubbles on the liquid is reduced to the greatest extent. Wherein, a gap exists between the end face of the surrounding bone 1172 near the heating body 12 and the heating body 12 to prevent the surrounding bone 1172 on the fog protrusion 117 from directly pressing force on the heating body 12.

Referring to fig. 13, fig. 13 is a schematic view illustrating a structure of the protrusion portion according to another embodiment of fig. 12 mated with the liquid inlet of the sealing member.

In another embodiment, the liquid inlet 181 of the seal 18 is uniform in size in its direction of extension. The side of the liquid inlet 181 is parallel to the axis of the atomizing assembly 1. The protruding portion 117 covers a part of the side surface of the liquid inlet 181, and a gap exists between the end surface of the protruding portion 117 close to the heating element 12 and the heating element 12. It will be appreciated that the more the protrusion 117 covers the side of the inlet 181, the less the influence of the return air bubbles on the liquid discharge can be advantageously reduced, only by making the protrusion 117 not directly press the force on the heating element 12.

In order to solve the problem that the backflow bubbles are easily adhered to the sealing member 18 (silica gel member) to affect the liquid discharge, the sealing member 18 may be disposed between the side surface of the heating element 12 and the cavity wall of the housing cavity 113, so that the liquid suction surface is completely exposed to the liquid discharge channel 114 to achieve sealing. Optionally, the port of the lower liquid channel 114 is abutted with the liquid suction surface of the heating body 12; that is, the liquid suction surface of the heat-generating body 12 is in direct fluid communication with the liquid discharge passage 114, and does not pass through any member. Wherein the material of the nebulization seat 11 is more wettable than the material of the seal 18 or the contact angle of the material of the nebulization seat 11 with the aerosol-generating substrate is smaller than the contact angle of the material of the seal 18 with the aerosol-generating substrate. In one embodiment, the sealing member 18 is disposed around the side surface of the heating element 12 and is disposed only between the side surface of the heating element 12 and the cavity wall of the housing cavity 113; in another embodiment, the sealing member 18 is provided only between the side surface of the heat generating body 12 and the cavity wall of the housing cavity 113, and on the atomizing surface of the heat generating body 12, and the sealing member 18 completely exposes the heat generating film 122. That is, the surface of the heating element 12 near the liquid storage cavity 13 is not covered with the sealing member 18, and there is no possibility that the reflux bubbles adhere to the sealing member 18 during atomization; meanwhile, the port of the liquid discharging channel 114 is abutted with the liquid suction surface of the heating body 12, and the reflux bubble does not influence the smoothness of the liquid discharging.

The effect of the thickness of the dense substrate 121 and the pore diameter of the first micropores 1213 provided herein on the liquid supply efficiency is verified by experiments as follows.

The liquid supply efficiency of the heat-generating body 12 was evaluated by a heat-generating body 12 wet firing experiment. The direct-current power supply is adopted to supply power, the thimble 20 (the thimble 20 is electrically connected with a battery) of the power supply assembly 2 is respectively connected with the electrode 123 of the heating body 12, the power and the power-on time are controlled, and the infrared thermal imager or the thermocouple is adopted to measure the temperature of the heating film 122.

When the heat generating film 122 is energized, the instantaneous temperature rises, vaporizing the aerosol-generating substrate within the first micro-pores 1213, and as the aerosol-generating substrate within the first micro-pores 1213 is consumed, capillary action of the first micro-pores 1213 causes the aerosol-generating substrate within the reservoir 13 to continually replenish the heat generating film 122.

The flow of the aerosol-generating substrate within the first micro-holes 1213 having capillary action can be calculated according to the Washburn equation, S being the hole area of the first micro-holes 1213, ρ being the aerosol-generating substrate density, z being the distance the aerosol-generating substrate has travelled, γ being the surface tension, μ being the viscosity of the aerosol-generating substrate, r being the radius of the first micro-holes 1213, θ being the contact angle of the aerosol-generating substrate to the dense substrate 121 material. Aerosol generating matrix the atomization amount of (2) is as follows:

From the formula, ρ, γ, μ, θ are unchanged after determining the material of the aerosol-generating substrate and the dense substrate 121. The larger the pore size of the first micro-pores 1213, the more adequate the supply, but the greater the risk of product air negative pressure during transport and warm flushing leakage during use. Therefore, the thickness, pore size, and thickness to diameter ratio of the dense matrix 121 are important to ensure adequate liquid supply during atomization and to prevent leakage of the aerosol-generating substrate.

The heat-generating body 12 was subjected to a machine test, and the relationship between the thickness of the dense substrate 121/the pore diameter of the first micropores 1213 and the amount of atomization was evaluated, and the result was shown in fig. 14 (fig. 14 is a graph of the relationship between the thickness of the dense substrate/the pore diameter of the first micropores and the amount of atomization of the heat-generating body provided in the present application). As can be seen from fig. 14, when the thickness of the dense matrix 121/the pore size of the first micropores 1213 is excessively large, the aerosol-generating substrate supplied by capillary action is difficult to satisfy the atomization demand amount, and the atomization amount is decreased. When the thickness of the dense matrix 121/the pore size of the first micropores 1213 is too small, the aerosol-generating substrate easily flows out from within the first micropores 1213 to the surface of the heat generating film 122, resulting in a decrease in atomization efficiency and a decrease in atomization amount.

The foregoing description is only a partial embodiment of the present application, and is not intended to limit the scope of the present application, and all equivalent devices or equivalent process transformations made by the present specification and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present application.

Claims

1. A heat-generating body for atomizing a liquid aerosol-generating substrate, the heat-generating body comprising:

the device comprises a flaky substrate, a liquid suction device and a liquid suction device, wherein the flaky substrate is a compact substrate and comprises an atomization surface and a liquid suction surface opposite to the atomization surface; the compact substrate is provided with a micropore array area and a blank area adjacent to the micropore array area; the micropore array area is provided with a plurality of first micropores, and the first micropores are through holes penetrating through the atomizing surface and the liquid suction surface;

the electrode is arranged in the blank area of the atomization surface;

the heating element is arranged on the compact substrate and is electrically connected with the electrode and used for heating the atomized aerosol generating substrate;

wherein, the blank zone of the liquid suction surface is used for being matched with a sealing element, and the blank zone of the liquid suction surface is at least partially covered by the sealing element.

2. A heat-generating body according to claim 1, wherein the sheet-like base is a flat plate-like shape; the blank area is arranged around the micropore array area.

3. A heat-generating body according to claim 2, wherein the blank-holding region includes two first sub-blank-holding regions respectively located on opposite sides of the microwell array region in a first direction, and two second sub-blank-holding regions respectively located on opposite sides of the microwell array region in a second direction perpendicular to the first direction; the width of the first sub-blank area is larger than that of the second sub-blank area; the electrode is arranged in the first sub-blank area.

4. A heat-generating body according to claim 3, wherein the width of the first sub-margin is 2.1mm to 2.6mm; the width of the second sub-blank area is more than or equal to 0.5mm.

5. A heat-generating body according to claim 3, wherein the dense substrate is rectangular flat plate-like, and the plurality of first micropores in the micropore array region are arranged in a rectangular array; the widths of the two first sub-blank areas are the same, and the widths of the two second sub-blank areas are the same.

6. A heat-generating body as described in claim 1, wherein the material of the dense substrate is glass, and the glass is borosilicate glass, quartz glass, or photosensitive lithium aluminosilicate glass.

7. A heat-generating body as described in claim 1, wherein the dense substrate has a thickness of 0.1mm to 1mm; the pore diameter of the first micropore is 1-100 μm.

8. A heat-generating body as described in claim 1, wherein a ratio of a thickness of the dense matrix to a pore diameter of the first micropores is 20:1 to 3:1.

9. A heat-generating body according to claim 1, wherein a ratio of a hole center distance between adjacent first micropores to a pore diameter of the first micropores is 3:1 to 1.5:1.

10. A heat generating body as described in claim 1, wherein said heat generating element is a heat generating film, and a micropore array region provided on said atomizing face; the heating film is provided with a plurality of second micropores which are in one-to-one correspondence with the first micropores and are mutually communicated.

11. A heat-generating body as described in claim 10, wherein a material of said heat-generating film is silver or silver alloy or copper alloy or aluminum alloy or gold alloy, and a thickness of said heat-generating film is in a range of 200nm to 5 μm.

12. An atomizing assembly, comprising:

a reservoir for storing a gas-generating matrix;

a heat-generating body as described in any one of claims 1 to 11; the first micropore is communicated with the liquid storage cavity;

and the sealing piece is arranged on the liquid suction surface and covers at least part of the blank area of the liquid suction surface.

13. The atomizing assembly of claim 12, wherein the seal completely covers a blank area of the liquid absorbing surface; and a liquid inlet is arranged on the sealing piece so that the micropore array area of the liquid absorbing surface is completely exposed.

14. The atomizing assembly of claim 12, further comprising an atomizing base, wherein the seal is clamped between the white space of the heat generating body and the atomizing base.

15. The atomizing assembly of claim 14, wherein the atomizing base includes an atomizing base and an atomizing base, the atomizing base and the atomizing base clamp the heat generating body from both sides of the liquid suction surface and the atomizing surface, respectively, and the sealing member is clamped between a blank space of the heat generating body and the atomizing base.

16. The atomizing assembly of claim 15, wherein the seal is provided with a liquid inlet to expose the microwell array area; the atomization footstock is provided with a liquid discharging channel; the liquid inlet is communicated with the liquid storage cavity through the liquid discharging channel; the heating body is matched with the atomizing base to form an atomizing cavity.

17. The atomizing assembly of claim 14, wherein the atomizing base is plastic; the sealing piece is made of silica gel or fluororubber.

18. The atomizing assembly of claim 12, further comprising a needle; one end of the thimble is abutted with the electrode of the heating body, and the other end of the thimble is electrically connected with the power supply assembly; the sealing element at least covers the area of the liquid suction surface corresponding to the thimble.

19. An electronic atomizing device, comprising an atomizing assembly and a power supply assembly, wherein the atomizing assembly is an atomizing assembly according to any one of claims 12-18, and the power supply assembly controls the operation of the atomizing assembly.