Heating element, atomization component and electronic atomization device

Abstract

The present application discloses a heating element, an atomization component and an electronic atomization device. The heating element includes a sheet-shaped substrate, a heating element and electrodes; the sheet-shaped substrate is a dense substrate, and the dense substrate includes an atomization surface and a liquid absorption surface opposite to the atomization surface; the dense substrate is provided with a microporous array region and a blank region adjacent to the microporous array region; the microporous array region has a plurality of first micropores, and the first micropores are through holes penetrating the atomization surface and the liquid absorption surface; the electrodes are arranged in the blank region of the atomization surface; the heating element is arranged on the dense substrate and electrically connected to the electrodes; the heating element is used for heating and atomizing an aerosol-forming matrix; the blank region of the liquid absorption surface is used for cooperating with a seal, and at least part of the blank region of the liquid absorption surface is covered by the seal. Through the above arrangement, the number of the first micropores on the sheet-shaped substrate is reduced as much as possible, thereby improving the strength of the heating element; and the blank region of the liquid absorption surface of the sheet-shaped substrate cooperates with the seal, and the seal further prevents the sheet-shaped substrate in the heating element from breaking.

Description

Technical Field

[0001] The present application relates to the technical field of atomizers, and more particularly to a heating element, an atomization assembly, and an electronic atomization device. Background Art

[0002] An electronic atomization device is composed of a heating element, a battery, a control circuit, etc. The heating element, as the core component of the electronic atomization device, its characteristics determine the atomization effect and user experience of the electronic atomization device.

[0003] The existing heating elements are mainly cotton core heating elements and ceramic heating elements. Most of the cotton core heating elements are structures in which a spring-shaped metal heating wire is wound around a cotton rope or a fiber rope; the liquid aerosol generating matrix to be atomized is sucked at both ends of the cotton rope and then transported to the central metal heating wire for heating and atomization. Most of the ceramic heating elements are formed with a heating film on the surface of a porous ceramic body, and the porous ceramic body plays a role in liquid conduction and liquid storage.

[0004] With the progress of technology, users have higher and higher requirements for the atomization effect of electronic atomization devices. In order to meet the needs of users, a thin heating element is provided to improve the liquid supply capacity, such as a sheet-shaped microporous array glass heating element, but this thin heating element is easily broken. Summary of the Invention

[0005] In view of this, the present application provides a heating element, an atomization assembly, and an electronic atomization device to solve the technical problem that the thin heating element in the prior art is easily broken.

[0006] To solve the above technical problem, the first technical solution provided by the present application is: to provide a heating element, including a sheet-shaped substrate, an electrode, and a heating element; the sheet-shaped substrate is a dense substrate, and the dense substrate includes an atomization surface and a liquid absorption surface opposite to the atomization surface; the dense substrate is provided with a microporous array area and a blank area adjacent to the microporous array area; the microporous array area has a plurality of first micropores, and the first micropores are through holes penetrating the atomization surface and the liquid absorption surface; the electrode is disposed in the blank area of the atomization surface; the heating element is disposed in the dense substrate and electrically connected to the electrode for heating and atomizing the aerosol generating matrix; wherein, the blank area of the liquid absorption surface is used to cooperate with a seal, and at least part of the blank area of the liquid absorption surface is covered by the seal.

[0007] Wherein, the sheet-shaped substrate is flat; the blank area is arranged around the microporous array area for one week.

[0008] Among them, the blank area includes two first sub - blank areas and two second sub - blank areas. The two first sub - blank areas are respectively located on the opposite sides of the micro - pore array area along the first direction, and the two second sub - blank areas are respectively located on the opposite sides of the micro - pore array area along the second direction, where the second direction is perpendicular to the first direction; the width of the first sub - blank area is greater than the width of the second sub - blank area; the electrode is arranged in the first sub - blank area.

[0009] Among them, the width of the first sub - blank area is 2.1 mm - 2.6 mm; the width of the second sub - blank area is greater than or equal to 0.5 mm.

[0010] Among them, the dense matrix is in the shape of a rectangular flat plate, and multiple first micro - pores in the micro - pore array area 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.

[0011] Among them, the material of the dense matrix is glass, and the glass is borosilicate glass, quartz glass or photosensitive lithium aluminosilicate glass.

[0012] Among them, the thickness of the dense matrix is 0.1 mm - 1 mm; the pore diameter of the first micro - pore is 1 μm - 100 μm.

[0013] Among them, the ratio of the thickness of the dense matrix to the pore diameter of the first micro - pore is 20:1 - 3:1.

[0014] Among them, the ratio of the center - to - center distance between adjacent first micro - pores to the pore diameter of the first micro - pore is 3:1 - 1.5:1.

[0015] Among them, the heating element is a heating film, which is arranged in the micro - pore array area on the atomization surface; the heating film has a plurality of second micro - pores that correspond to and are in communication with the plurality of first micro - pores one by one.

[0016] Among them, the material of the heating film is silver or silver alloy or copper or copper alloy or aluminum or aluminum alloy or gold or gold alloy, and the thickness range of the heating film is 200 nm - 5 μm.

[0017] To solve the above - mentioned technical problems, the second technical solution provided by this application is: to provide an atomization assembly, including a liquid storage cavity, a heating body and a seal; the liquid storage cavity is used for storing an aerosol - generating matrix; the heating body is the heating body described in any one of the above; the first micro - pores are in communication with the liquid storage cavity; the seal is arranged on the liquid absorption surface and covers at least part of the blank area of the liquid absorption surface.

[0018] Among them, the seal completely covers the blank area of the liquid absorption surface; a liquid inlet is arranged on the seal so that the micro - pore array area of the liquid absorption surface is completely exposed.

[0019] Among them, the atomization component further includes an atomization seat, and the seal is clamped between the blank area of the heating element and the atomization seat.

[0020] Among them, the atomization seat includes an atomization top seat and an atomization bottom seat. The atomization top seat and the atomization bottom seat clamp the heating element from both sides of the liquid absorption surface and the atomization surface respectively, and the seal is clamped between the blank area of the heating element and the atomization top seat.

[0021] Among them, a liquid inlet is provided on the seal to expose the microporous array area; the atomization top seat has a liquid downward channel; the liquid downward channel communicates the liquid inlet with the liquid storage cavity; the heating element and the atomization bottom seat cooperate to form an atomization cavity.

[0022] Among them, the material of the atomization seat is plastic; the material of the seal is silicone or fluororubber.

[0023] Among them, the atomization component further includes a thimble; one end of the thimble abuts against the electrode of the heating element, and the other end of the thimble is used for electrical connection with the power supply component; the seal at least covers the area of the liquid absorption surface corresponding to the thimble.

[0024] In order to solve the above technical problems, the third technical solution provided by this application is: to provide an electronic atomization device, including an atomization component and a power supply component, the atomization component is the atomization component described in any one of the above, and the power supply component controls the operation of the atomization component.

[0025] The beneficial effects of this application: Different from the prior art, the heating element of this application includes a sheet-shaped substrate, a heating element and an electrode; the sheet-shaped substrate is a dense substrate, the dense substrate includes an atomization surface and a liquid absorption surface opposite to the atomization surface; the dense substrate is provided with a microporous array area and a blank area adjacent to the microporous array area; the microporous array area has a plurality of first micropores, and the first micropores are through holes penetrating the atomization surface and the liquid absorption surface; the electrode is arranged in the blank area of the atomization surface; the heating element is arranged in the dense substrate and is electrically connected to the electrode; the heating element is used for heating and atomizing the aerosol generation matrix; the blank area of the liquid absorption surface is used for cooperating with the seal, and at least part of the blank area of the liquid absorption surface is covered by the seal. Through the above settings, the number of the first micropores on the sheet-shaped substrate is reduced as much as possible to improve the strength of the heating element; and the blank area of the liquid absorption surface of the sheet-shaped substrate cooperates with the seal, and the seal further prevents the sheet-shaped substrate in the heating element from breaking. Description of the Drawings

[0026] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 is a schematic structural diagram of the electronic atomization device provided by the present application;

[0028] Figure 2 is a schematic cross-sectional structure diagram of the atomization component provided by the present application along the first direction;

[0029] Figure 3 is a schematic cross-sectional structure diagram of the atomization component provided by the present application along the second direction;

[0030] Figure 4 is a schematic structural diagram of the heating element provided by the present application;

[0031] Figure 5 is Figure 4 a schematic structural diagram of the dense matrix in the heating element provided;

[0032] Figure 6 is Figure 4 a schematic structural diagram of the heating element provided as viewed from the atomization surface side;

[0033] Figure 7 is Figure 4 a schematic structural diagram of the heating element provided as viewed from the liquid suction surface side;

[0034] Figure 8 is Figure 2 a schematic partial structural diagram of the atomization component provided;

[0035] Figure 9a is Figure 8 a schematic structural diagram in another direction;

[0036] Figure 9b is a schematic partial structural diagram of another embodiment of the atomization component provided by the present application

[0037] Figure 10 is a schematic partial structural diagram of another embodiment of the atomization component provided by the present application;

[0038] Figure 11 is a schematic partial structural diagram of yet another embodiment of the atomization component provided by the present application;

[0039] Figure 12 is Figure 3 a schematic partial structural diagram provided;

[0040] Figure 13 Yes Figure 12 Schematic structural diagram of the cooperation between another embodiment of the convex part and the liquid inlet of the seal

[0041] Figure 14 It is a graph showing the relationship between the thickness of the dense matrix / the diameter of the first micropore of the heating element provided by the present application and the atomization amount. Specific embodiments

[0042] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be specifically noted that the following embodiments are only used to illustrate the present application, but do not limit the scope of the present application. Similarly, the following embodiments are only some embodiments of the present application rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0043] The terms "first", "second", and "third" in the present application are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly. The terms "include" and "have" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or components inherent to these processes, methods, products, or devices.

[0044] Referring to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0045] Please refer to Figure 1 , Figure 1 It is a schematic structural diagram of the electronic atomization device provided by the present application.

[0046] The electronic atomization device can be used for atomization of liquid substrates. The electronic atomization device includes an atomization component 1 and a power supply component 2 that are interconnected. The atomization component 1 is used to store a liquid aerosol-generating matrix and atomize the aerosol-generating matrix to form an aerosol that can be inhaled by the user. The liquid aerosol-generating matrix can be a liquid matrix such as a liquid medicine, a plant leaf liquid, etc.; the atomization component 1 can be specifically used in different fields, such as medical treatment, electronic aerosolization, etc. The power supply component 2 includes a battery (not shown), an airflow sensor (not shown), and a controller (not shown), etc.; the battery is used to power the atomization component 1 so that the atomization component 1 can heat the atomized aerosol-generating matrix to form an aerosol; the airflow sensor is used to detect airflow changes in the electronic atomization device, and the controller controls whether the atomization component 1 works according to the airflow changes detected by the airflow sensor. The atomization component 1 and the power supply component 2 can be set as an integral unit or can be detachably connected, and are designed according to specific needs.

[0047] See also Figure 2 , Figure 2 It is a schematic diagram of the cross-sectional structure of the atomization assembly provided by the present application along the first direction.

[0048] The atomizer assembly 1 includes a shell 10, an atomizer seat 11 and a heating element 12. The shell 10 has a liquid storage chamber 13 and an air outlet channel 14. The liquid storage chamber 13 is used to store a liquid aerosol-generating matrix, and the liquid storage chamber 13 is arranged around the air outlet channel 14. The end of the shell 10 also has a suction port 15, and the suction port is connected to the air outlet channel 14. The shell 10 has a receiving chamber 16 on the side of the liquid storage chamber 13 away from the suction port 15, and the atomizer seat 11 is arranged in the receiving chamber 16. The atomizer seat 11 includes an atomizer top seat 111 and an atomizer base 112; optionally, the material of the atomizer seat 11 is plastic. The atomizer top seat 111 and the atomizer base 112 cooperate to form a receiving chamber 113; that is, the atomizer seat 11 has a receiving chamber 113. Specifically, a receiving groove 1111 is provided on the atomizer top seat 111, and the receiving groove 1111 cooperates with the atomizer base 112 to form a receiving chamber 113. The heating element 12 is disposed in the receiving cavity 113 , and is disposed in the receiving cavity 16 together with the atomizer seat 11 .

[0049] Two lower liquid channels 114 are provided on the atomizing top seat 111. Specifically, two lower liquid channels 114 are provided on the top wall of the atomizing top seat 111, and the two lower liquid channels 114 are provided on both sides of the gas outlet channel 14. One end of the lower liquid channel 114 is in communication with the liquid storage chamber 13, and the other end is in communication with the receiving chamber 113, that is, the lower liquid channel 114 enables the liquid storage chamber 13 to communicate with the receiving chamber 113, so that the aerosol generating substrate in the liquid storage chamber 13 enters the heating element 12 through the lower liquid channel 114. In other words, the heating element 12 is in fluid communication with the liquid storage chamber 13, and the heating element 12 is used to absorb and heat the atomized aerosol generating substrate.

[0050] In other embodiments, the liquid storage chamber 13 may not be formed by the housing 10, but is an independent component, such as a liquid storage bottle. The independent liquid storage chamber 13 is disposed outside the housing 10 and connected to the internal space of the housing 10 through a syringe needle, so as to supply liquid to the heating element 12.

[0051] In this embodiment, the surface of the heating element 12 away from the liquid storage chamber 13 is the atomization surface. An atomization chamber 115 is formed between the atomization surface of the heating element 12 and the inner wall surface of the accommodation chamber 113. The atomization chamber 115 is communicated with the air outlet passage 14. An air inlet 116 is provided on the atomization base 112 to communicate the outside with the atomization chamber 115. External gas enters the atomization chamber 115 through the air inlet 116, carries the aerosol atomized by the heating element 12 into the air outlet passage 14, and finally reaches the suction port 15 and is inhaled by the user.

[0052] The atomization assembly 1 further includes a conduction member 17, and the conduction member 17 is fixed to the atomization base 112. One end of the conduction member 17 is electrically connected to the heating element 12, and the other end is used for electrically connecting to the power supply assembly 2, so that the heating element 12 can operate.

[0053] The atomization assembly 1 further includes a sealing member 18 and a sealing top cover 19. The sealing member 18 is disposed between the heating element 12 and the atomization top seat 111, and is used to seal between the heating element 12 and the liquid supply passage 114 to prevent liquid leakage. That is, the sealing member 18 is used to seal the periphery of the heating element 12. The sealing top cover 19 is disposed on the surface of the atomization top seat 111 close to the liquid storage chamber 13, and is used to seal between the liquid storage chamber 13, the atomization top seat 111 and the air outlet passage 14 to prevent liquid leakage. Optionally, the materials of the sealing member 18 and the sealing top cover 19 are silicone or fluororubber.

[0054] Please refer to Figure 3 , Figure 3 which is a schematic cross-sectional structure diagram of the atomization assembly provided by the present application along the second direction.

[0055] There is a gap between the outer side surface of the atomization top seat 111 and the inner side surface of the housing 10. The external gas entering from the air inlet 116 enters the atomization chamber 115, carries the aerosol atomized by the heating element 12, and enters the air outlet passage 14 through the gap between the outer side surface of the atomization top seat 111 and the inner side surface of the housing 10.

[0056] Please refer to Figure 4 and Figure 5 , Figure 4 which is a schematic structure diagram of the heating element provided by the present application, Figure 5 and Figure 4 is a schematic structure diagram of the dense matrix in the heating element provided by

[0057] The heating element 12 includes a sheet-shaped substrate 125 and a heating element 126. The heating element 126 is disposed on the sheet-shaped substrate 125. The sheet-shaped substrate 125 may be a sheet-shaped dense substrate with a thickness less than or equal to 1 mm. For example, the sheet-shaped dense substrate is a sheet-shaped glass sheet; the sheet-shaped substrate 125 may also be a sheet-shaped porous ceramic substrate with a thickness less than or equal to 2 mm. When the two sides of the sheet-shaped substrate 125 with a bending strength lower than 100 MPa directly contact hard objects, it is easy to break, and the protection structure introduced later in the present invention can reduce or avoid the breakage of the sheet-shaped substrate 125. The heating element 126 may be a heating sheet, a heating film, a heating mesh, etc., and may be disposed on the surface of the sheet-shaped substrate 125 or buried inside the sheet-shaped substrate 125, which is specifically designed according to needs. In some embodiments, the sheet-shaped substrate 125 itself can generate heat, such as a ceramic heating element that generates heat by itself. At this time, the heating element is a combination of an electrode and the sheet-shaped substrate 125.

[0058] Among them, the sheet shape defined by the sheet-shaped substrate 125 is relative to a block. The ratio of the length to the thickness of the sheet-shaped substrate 125 is larger than the ratio of the length to the thickness of the block. In the present embodiment, the sheet-shaped substrate 125 is flat. In other embodiments, the sheet-shaped substrate 125 may also be arc-shaped, cylindrical, etc., such as a cylindrical shape, and other structures in the atomization assembly 1 are arranged in cooperation with the specific structure of the sheet-shaped substrate 125. Hereinafter, the case where the sheet-shaped substrate 125 is flat will be taken as an example for introduction.

[0059] The sheet-shaped substrate 125 includes an absorption surface and an atomization surface that are opposite to each other. In the present embodiment, the heating element 126 is disposed on the atomization surface. Hereinafter, a detailed introduction will be made to the sheet-shaped dense substrate 121 with a thickness less than or equal to 1 mm in the heating element 12 and the heating film 122 as the heating element 126 in the heating element 12.

[0060] See Figure 5 , the dense substrate 121 includes a first surface 1211 and a second surface 1212 opposite to the first surface 1211; a plurality of first micropores 1213 are provided on the dense substrate 121, and the first micropores 1213 are through holes penetrating the first surface 1211 and the second surface 1212. See Figure 4, a heating film 122 is formed on the first surface 1211; the resistance of the heating film 122 at room temperature is 0.5 ohm - 2 ohms, where the room temperature is 25°C. It can be understood that the dense matrix 121 plays a structural support role, and the heating film 122 is electrically connected to the power supply assembly 2. When the power of the electronic atomization device is 6 W - 8.5 W and the voltage range of the battery is 2.5 V - 4.4 V, in order to achieve the working resistance of the battery, the resistance range of the heating film 122 of the heating element 12 at room temperature is 0.5 ohm - 2 ohms. Among them, the surface of the dense matrix 121 where the heating film 122 is provided is the atomization surface, that is, the first surface 1211 of the dense matrix 121 is the atomization surface, and the second surface 1212 of the dense matrix 121 is the liquid absorption surface; the first micropores 1213 are used to guide the aerosol generating matrix from the liquid absorption surface to the atomization surface, and the first micropores 1213 have a capillary action.

[0061] In this application, by providing a plurality of first micropores 1213 with capillary force on the dense matrix 121, the porosity of the heating element 12 can be precisely controlled, improving the consistency of the product. That is to say, in mass production, the porosity of the dense matrix 121 in the heating element 12 is basically the same, and the thickness of the heating film 122 formed on the dense matrix 121 is uniform, so that the atomization effects of the electronic atomization devices produced in the same batch are the same.

[0062] The aerosol generating matrix in the liquid storage cavity 13 reaches the dense matrix 121 of the heating element 12 through the liquid supply channel 114, and uses the capillary force of the first micropores 1213 on the dense matrix 121 to guide the aerosol generating matrix from the second surface 1212 to the first surface 1211, so that the aerosol generating matrix is atomized by the heating film 122; that is to say, the first micropores 1213 are communicated with the liquid storage cavity 13 through the liquid supply channel 114. Among them, the material of the dense matrix 121 can be glass or dense ceramic; when the dense matrix 121 is glass, it can be one of ordinary glass, quartz glass, borosilicate glass, and photosensitive lithium aluminosilicate glass.

[0063] The following will be introduced with the material of the dense matrix 121 being glass.

[0064] In a specific embodiment, the extending direction of the first micropores 1213 may be perpendicular to the thickness direction of the dense matrix 121, or may form an angle with the thickness direction of the dense matrix 121, and the range of the angle is 80 degrees - 90 degrees. The longitudinal section of the first micropores 1213 may be rectangular, trapezoidal, dumbbell-shaped with larger ends and smaller middle, etc. The longitudinal section shape and the extending direction of the first micropores 1213 can be designed according to needs. Since the first micropores 1213 are arranged in regular geometric shapes, the volume of the first micropores 1213 in the heating element 12 can be calculated, and thus the porosity of the entire heating element 12 can also be calculated, ensuring good consistency in the porosity of the heating elements 12 of similar products.

[0065] The dense matrix 121 can be set to a regular shape, such as a rectangular plate shape, a circular plate shape, etc. In this embodiment, a plurality of first micropores 1213 provided on the dense matrix 121 are arranged in an array; that is, the plurality of first micropores 1213 provided on the dense matrix 121 are regularly arranged, and the center-to-center distance between adjacent first micropores 1213 among the plurality of first micropores 1213 is the same. Optionally, the plurality of first micropores 1213 are arranged in a rectangular array; or the plurality of first micropores 1213 are arranged in a circular array; or the plurality of first micropores 1213 are arranged in a hexagonal array. Among them, the pore diameters of the plurality of first micropores 1213 can be the same or different, and are designed according to needs.

[0066] Both the first surface 1211 and the second surface 1212 of the dense matrix 121 include smooth surfaces, and the first surface 1211 is a plane. That is to say, the first surface 1211 of the dense matrix 121 is a smooth surface and is a plane, and the heating film 122 is formed on the first surface 1211. The smooth first surface 1211 is beneficial for the deposition of the metal material into a film when the thickness is small.

[0067] In one embodiment, both the first surface 1211 and the second surface 1212 of the dense matrix 121 are smooth surfaces and are both planes, and the first surface 1211 and the second surface 1212 of the dense matrix 121 are arranged in parallel; the first micropore 1213 penetrates through the first surface 1211 and the second surface 1212, the axis of the first micropore 1213 is perpendicular to the first surface 1211 and the second surface 1212, and the cross-section of the first micropore 1213 is circular; at this time, the thickness of the dense matrix 121 is equal to the length of the first micropore 1213. It can be understood that the second surface 1212 is parallel to the first surface 1211, and the first micropore 1213 penetrates from the first surface 1211 to the second surface 1212, so that the production process of the dense matrix 121 is simple and the cost is reduced. The thickness of the dense matrix 121 is the distance between the first surface 1211 and the second surface 1212. The first micropore 1213 can be a straight through-hole with a uniform pore diameter or a straight through-hole with a non-uniform pore diameter, as long as the variation range of the pore diameter is within 50%. For example, due to the limitations of the preparation process, the first micropore 1213 opened on the glass by laser induction and corrosion usually has a larger pore diameter at both ends and a smaller pore diameter in the middle. Therefore, as long as it is ensured that the pore diameter of the middle part of the first micropore 1213 is not less than half of the pore diameter of the two end ports.

[0068] In another embodiment, the first surface 1211 of the dense matrix 121 is a smooth surface and is a plane to facilitate the deposition of a metal film when the thickness is small. The second surface 1212 of the dense matrix 121 is a smooth surface, and the second surface 1212 can be a non-planar surface, for example, an inclined surface, a curved surface, a serrated surface, etc. The second surface 1212 can be designed according to specific needs, as long as the first micropore 1213 penetrates through the first surface 1211 and the second surface 1212.

[0069] Compared with the existing cotton wick heating element and porous ceramic heating element, the heating element 12 with a microporous sheet-like structure provided in this application has a shorter liquid supply channel and a faster liquid supply speed, but a greater risk of liquid leakage. Therefore, the inventors of this application studied the influence of the ratio of the thickness of the dense matrix 121 to the pore diameter of the first micropores 1213 on the liquid conduction of the heating element 12. The results showed that increasing the thickness of the dense matrix 121 and decreasing the pore diameter of the first micropores 1213 can reduce the risk of liquid leakage but also decrease the liquid supply rate, while decreasing the thickness of the dense matrix 121 and increasing the pore diameter of the first micropores 1213 can increase the liquid supply rate but also increase the risk of liquid leakage, and the two are contradictory. For this reason, this application designed the thickness of the dense matrix 121, the pore diameter of the first micropores 1213, and the ratio of the thickness of the dense matrix 121 to the pore diameter of the first micropores 1213, so that when the heating element 12 operates at a power of 6 W - 8.5 W and a voltage of 2.5 V - 4.4 V, sufficient liquid supply can be achieved while preventing liquid leakage. Among them, the thickness of the dense matrix 121 is the distance between the first surface 1211 and the second surface 1212.

[0070] In addition, the inventors of this application studied the ratio of the center distance between adjacent first micropores 1213 to the pore diameter of the first micropores 1213 and found that if the ratio of the center distance between adjacent first micropores 1213 to the pore diameter of the first micropores 1213 is too large, the strength of the dense matrix 121 is relatively high and it is easy to process, but the porosity is too small, which easily leads to insufficient liquid supply; if the ratio of the center distance between adjacent first micropores 1213 to the pore diameter of the first micropores 1213 is too small, the porosity is relatively large and the liquid supply is sufficient, but the strength of the dense matrix 121 is relatively low and it is not easy to process; for this reason, this application also designed the ratio of the center distance between adjacent first micropores 1213 to the pore diameter of the first micropores 1213, and on the premise of meeting the liquid supply capacity, the strength of the dense matrix 121 was improved as much as possible.

[0071] Next, when the material of the dense matrix 121 is glass, and the first surface 1211 and the second surface 1212 of the dense matrix 121 are both smooth planes and are arranged in parallel, the thickness of the dense matrix 121, the pore diameter of the first micropores 1213, the ratio of the thickness of the dense matrix 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 introduced.

[0072] The thickness of the dense matrix 121 is 0.1 mm - 1 mm. When the thickness of the dense matrix 121 is greater than 1 mm, the liquid supply requirement cannot be met, resulting in a decrease in the amount of aerosol, a large amount of heat loss, and a high cost for setting the first micropores 1213; when the thickness of the dense matrix 121 is less than 0.1 mm, the strength of the dense matrix 121 cannot be guaranteed, which is not conducive to improving the performance of the electronic atomization device. Preferably, the thickness of the dense matrix 121 is 0.2 mm - 0.5 mm. The pore diameter of the first micropores 1213 on the dense matrix 121 is 1 μm - 100 μm. When the pore diameter of the first micropores 1213 is less than 1 μm, the liquid supply requirement cannot be met, resulting in a decrease in the amount of aerosol; when the pore diameter of the first micropores 1213 is greater than 100 μm, the aerosol generation matrix easily flows out of the first micropores 1213 to the first surface 1211, causing liquid leakage and a decrease in the atomization efficiency. Preferably, the pore diameter of the first micropores 1213 is 20 μm - 50 μm. It can be understood that the thickness of the dense matrix 121 and the pore diameter of the first micropores 1213 are selected according to actual needs.

[0073] The ratio of the thickness of the dense matrix 121 to the pore diameter of the first micropores 1213 is 20:1 - 3:1; preferably, the ratio of the thickness of the dense matrix 121 to the pore diameter of the first micropores 1213 is 15:1 - 5:1 (see Figure 14 , it is found through experiments that when the ratio of the thickness of the dense matrix 121 to the pore diameter of the first micropores 1213 is 15:1 - 5:1, it has a better atomization effect). When the ratio of the thickness of the dense matrix 121 to the pore diameter of the first micropores 1213 is greater than 20:1, the aerosol generation matrix supplied by the capillary action of the first micropores 1213 is difficult to meet the atomization demand of the heating element 12, which not only easily causes dry burning, but also the amount of aerosol generated by a single atomization decreases; when the ratio of the thickness of the dense matrix 121 to the pore diameter of the first micropores 1213 is less than 3:1, the aerosol generation matrix easily flows out of the first micropores 1213 to the first surface 1211, wasting the aerosol generation matrix, resulting in a decrease in the atomization efficiency, and further reducing the total amount of aerosol.

[0074] The ratio of the center - to - center distance between two adjacent first micropores 1213 to the pore diameter of the first micropores 1213 is 3:1 - 1.5:1, so as to improve the strength of the dense matrix 121 as much as possible on the premise of meeting the liquid supply capacity of the first micropores 1213 on the dense matrix 121; preferably, the ratio of the center - to - center distance between two adjacent first micropores 1213 to the pore diameter of the first micropores 1213 is 3:1 - 2:1; more preferably, the ratio of the center - to - center distance between two adjacent first micropores 1213 to the pore diameter of the first micropores 1213 is 3:1 - 2.5:1.

[0075] In a specific embodiment, preferably, the ratio of the thickness of the dense matrix 121 to the pore diameter of the first micropores 1213 is 15:1 - 5:1, and the ratio of the center-to-center distance between two adjacent first micropores 1213 to the pore diameter of the first micropores 1213 is 3:1 - 2.5:1.

[0076] It can be understood that the thickness of the dense matrix 121, the pore diameter of the first micropores 1213, the ratio of the thickness of the dense matrix 121 to the pore diameter of the first micropores 1213, and the ratio of the center-to-center distance between adjacent first micropores 1213 to the pore diameter of the first micropores 1213 provided in the present application can be combined and designed as needed.

[0077] Since the dense matrix 121 in the heating element 12 is a dense material, it can play a role in 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, there are no requirements for the strength and thickness of the heating film 122 in the heating element 12, and the heating film 122 can be made of a metal material with low resistivity.

[0078] In one embodiment, the heating film 122 formed on the first surface 1211 of the dense matrix 121 is a thin film, and the thickness range of the heating film 122 is 200 nanometers - 5 micrometers, that is, the thickness of the heating film 122 is relatively thin; preferably, the thickness range of the heating film 122 is 200 nanometers - 1 micrometer; more preferably, the thickness range of the heating film 122 is 200 nanometers - 500 nanometers. When the heating film 122 is a thin film, the heating film 122 has a plurality of second micropores 1221 that correspond to and communicate with the plurality of first micropores 1213 one by one. Further, the heating film 122 is also formed on the inner surface of the first micropores 1213; preferably, the heating film 122 is also formed on the entire inner surface of the first micropores 1213 (the structure is as Figure 4 shown). The heating film 122 is provided on the inner surface of the first micropores 1213, so that the aerosol-forming substrate can be atomized in the first micropores 1213, which is beneficial to improving the atomization effect.

[0079] The thinner the heating film 122, the smaller the influence on the pore diameter of the first micropores 1213, and thus a better atomization effect can be achieved; moreover, the thinner the heating film 122, the less heat the heating film 122 absorbs itself, the lower the electrothermal loss, and the faster the heating element 12 heats up. On the basis that the resistance of the heating film 122 at room temperature is 0.5 ohm - 2 ohms, the present application uses a metal material with low conductivity to form a thinner metal film and minimize the influence on the pore diameter of the first micropores 1213. Optionally, the resistivity of the heating film 122 is not greater than 0.06*10 -6Ω·m. The low-conductivity metal material of the heating film 122 is silver or silver alloy or copper or copper alloy or aluminum or aluminum alloy or gold or gold alloy; optionally, the material of the heating film 122 can be aluminum or aluminum alloy or gold or gold alloy. When powered on and heated, the heating film 122 can quickly heat up and directly heat the aerosol-forming matrix in the first micro-pore 1213 to achieve efficient atomization.

[0080] Furthermore, the inventors of the present application have found through research that the liquid aerosol-forming matrix contains various flavoring agents and additives, and elements such as sulfur, phosphorus, and chlorine. When the heating film 122 is powered on and heated, silver and copper are prone to corrosion failure. Gold has very strong chemical inertness, and a dense oxide film will form on the surface of aluminum. These two materials are very stable in the liquid aerosol-forming matrix and are preferably used as the material of the heating film 122.

[0081] The heating film 122 can be formed on the first surface 1211 of the dense matrix 121 by physical vapor deposition (such as magnetron sputtering, vacuum evaporation, ion plating) or chemical vapor deposition (plasma-assisted chemical deposition, laser-assisted chemical deposition, metal-organic compound deposition). It can be understood that the formation process of the heating film 122 does not cover the first micro-pore 1213, that is, the first micro-pore 1213 penetrates through the heating film 122. When the heating film 122 is formed on the first surface 1211 of the dense matrix 121 by physical vapor deposition or chemical vapor deposition, the heating film 122 is also formed on the inner surface of the first micro-pore 1213. When the magnetron sputtering method is used to form the heating film 122 on the first surface 1211 of the dense matrix 121, the metal atoms during magnetron sputtering are perpendicular to the first surface 1211 and parallel to the inner surface of the first micro-pore 1213, and the metal atoms are more likely to be deposited on the first surface 1211; assuming the thickness of the heating film 122 formed by the deposition of metal atoms on the first surface 1211 is 1 micron, at this time, the thickness of the metal atoms deposited on the inner surface of the first micro-pore 1213 is much less than 1 micron, and even less than 0.5 micron; the thinner the thickness of the heating film 122 deposited on the first surface 1211, the thinner the thickness of the heating film 122 formed on the inner surface of the first micro-pore 1213, and the smaller the influence on the aperture of the first micro-pore 1213. Since the thickness of the heating film 122 is much less than the aperture of the first micro-pore 1213, and the thickness of the part of the heating film 122 deposited in the first micro-pore 1213 is less than the thickness of the part deposited on the first surface 1211 of the dense matrix 121, therefore, the influence of the heating film 122 deposited in the first micro-pore 1213 on the aperture of the first micro-pore 1213 can be ignored.

[0082] Please refer to Figure 6 and Figure 7 , Figure 6 is Figure 4 a schematic structural view of the heating element viewed from the atomization surface side provided, Figure 7 isFigure 4 Schematic structural diagram of the heating element as viewed from the liquid absorption surface side.

[0083] The heating element 12 further includes two electrodes 123; that is, the heating element 12 includes a dense matrix 121, a heating film 122, and two electrodes 123. The dense matrix 121 includes an atomization surface and a liquid absorption surface opposite to the atomization surface. The heating film 122 and the electrodes 123 are disposed on the atomization surface and are electrically connected to each other; that is, the heating element 126 and the electrodes 123 are disposed on the atomization surface and are electrically connected to each other. A plurality of first micropores 1213 are provided on the dense matrix 121; that is, a plurality of first micropores 1213 can be provided on the entire surface of the dense matrix 121 in an array arrangement, or a plurality of first micropores 1213 can be provided only on a part of the surface of the dense matrix 121 in an array arrangement. Among them, the heating film 122 is a thin film, and the heating film 122 has a plurality of second micropores 1221 that correspond to and communicate with the plurality of first micropores 1213 one by one.

[0084] The inventors of the present application have found through research that the more the number of the first micropores 1213 provided on the dense matrix 121, the lower the strength of the dense matrix 121, which is not conducive to applying the heating element 12 to products. Therefore, preferably, a plurality of first micropores 1213 are provided only on a part of the surface of the dense matrix 121 in an array arrangement, and the details are introduced as follows.

[0085] The dense matrix 121 is provided with a micropore array region 1218 and a blank region 1219 adjacent to the micropore array region 1218. The micropore array region 1218 has a plurality of first micropores 1213, and the first micropores 1213 are through holes penetrating the atomization surface and the liquid absorption surface. The first micropores 1213 are used to guide the aerosol generation matrix from the liquid absorption surface to the atomization surface. The electrodes 123 are disposed in the blank region 1219 of the atomization surface. The heating film 122 is disposed on the dense matrix 121 and is electrically connected to the electrodes 123, and is used to heat and atomize the aerosol generation matrix; specifically, the heating film 122 (that is, the heating element 126) is disposed in the micropore array region 1218 of the atomization surface. Among them, the blank region 1219 of the liquid absorption surface is used to cooperate with the seal 18, and at least a part of the blank region 1219 of the liquid absorption surface is covered by the seal 18. That is to say, the seal 18 is disposed on the liquid absorption surface of the dense matrix 121 and covers at least a part of the blank region 1219 of the liquid absorption surface.

[0086] By providing a microporous array region 1218 on the dense matrix 121 and a blank region 1219 adjacent to the microporous array region 1218, it can be understood that the first micropores 1213 are not provided on the blank region 1219, reducing the number of the first micropores 1213 on the dense matrix 121, thereby improving the strength of the dense matrix 121 in the heating element 12 and reducing the production cost of providing the first micropores 1213 on the dense matrix 121. Moreover, the blank region 1219 of the liquid absorption surface of the dense matrix 121 cooperates with the seal 18, and the seal 18 prevents the dense matrix 121 in the heating element 12 from breaking while achieving sealing.

[0087] In one embodiment, the blank region 1219 is provided around the microporous array region 1218 for one week. The microporous array region 1218 in the dense matrix 121 serves as an atomization region, covering the heating film 122 and the peripheral region of the heating film 122, that is, substantially covering the region reaching the temperature of the aerosol generation matrix for atomization, making full use of the thermal efficiency. The heating element 12 is divided into different functional regions (the microporous array region 12218 and the blank region 1219 have different functions), and the structure is optimized according to different functions to meet both high thermal efficiency and strength requirements and sealing requirements.

[0088] Specifically, the blank region 1219 includes two first sub-blank regions 1219a and two second sub-blank regions 1219b. The two first sub-blank regions 1219a are respectively located on the opposite sides of the microporous array region 1218 along the first direction, and the two second sub-blank regions 1219b are respectively located on the opposite sides of the microporous array region 1218 along the second direction, and the second direction is perpendicular to the first direction. The width of the first sub-blank region 1219a is greater than the width of the second sub-blank region 1219b. Among them, the width of the first sub-blank region is 2.1 mm - 2.6 mm; the width of the second sub-blank region 1219b is greater than or equal to 0.5 mm. It can be understood that the size of the region around the microporous array region 1218 of the dense matrix 121 in this application is larger than the pore diameter of the first micropores 1213 to be called a blank region; that is, the blank region 1219 in this application is a region where the first micropores 1213 can be formed but are not formed, rather than a region around the microporous array region 1218 where the first micropores 1213 cannot be formed. In one embodiment, the distance between the first micropores 1213 closest to the side line of the dense matrix 121 and the side line of the dense matrix 121 is greater than the pore diameter of the first micropores 1213, and then it is considered that the blank region 1219 is provided in the circumferential direction of the microporous array region 1218.

[0089] In one embodiment, the dense substrate 121 is in the shape of a rectangular flat plate, and a plurality of first micro-holes 1213 in the micro-hole array region 1218 are arranged in a rectangular array; the widths of the two first sub-blank areas 1219a are the same, and the widths of the two second sub-blank areas 1219b are the same. It can be understood that the shape of the dense substrate 121 can be designed as required, the arrangement of the plurality of first micro-holes 1213 in the micro-hole array region 1218 can be designed as required, the setting method and size of the blank area 1219 can be designed as required, and the present application does not limit the above.

[0090] In one embodiment, the electrode 123 is disposed in the first sub-blank area 1219a to ensure the continuity and stability of the electrode 123, and to enable the electrode 123 disposed on the atomizing surface of the dense substrate 121 to have a sufficiently large contact area with the conduction member 17, ensuring the stability of the electrical connection between the conduction member 17 and the electrode 123 of the heating element 12. It can be understood that setting the width of the first sub-blank area 1219a to 2.1 mm - 2.6 mm facilitates disposing the electrode 123 in the first sub-blank area 1219a. In addition, the first sub-blank area 1219a can be used as the main clamping area for subsequent installation. For example, the first sub-blank area 1219a is clamped by the abutting portion of the ejector pin and the atomizing seat 11. Therefore, setting the width of the first sub-blank area 1219a to 2.1 mm - 2.6 mm can not only ensure that the first sub-blank area 1219a can withstand sufficient clamping stress, but also prevent the width of the atomizer 1 from being too large due to the excessive length of the heating element 12. At least a part of the electrode 123 is disposed in the first sub-blank area 1219a (that is, part of the electrode 123 is disposed in the blank area and part is disposed in the micro-hole array region 1218), and it is only necessary to achieve electrical connection with the conduction member 17; preferably, the electrode 123 is entirely disposed in the first sub-blank area 1219a, reducing the assembly precision requirements between the electrode 123 and the conduction member 17.

[0091] It can be understood that the seal 18 is in an annular structure (see Figure 8 and Figure 9a ), the seal 18 has a certain width, and setting the width of the second sub-blank area 1219b to be greater than or equal to 0.5 mm is to enable the blank area 1219 to cooperate with the seal 18, so that at least part of the blank area 1219 of the liquid absorption surface is covered by the seal 18.

[0092] Please refer to Figure 8 and Figure 9a , Figure 8 is Figure 2 a partial structural schematic diagram of the atomization assembly provided, Figure 9a is Figure 8 a structural schematic diagram in another direction of

[0093] See Figure 2, the atomizing top base 111 has a receiving groove 1111, the heating element 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 absorption surface of the heating element 12. The liquid passage 114 on the atomizing top base 111 communicates with the receiving groove 1111 to enable the aerosol-forming matrix to enter the heating element 12. The heating element 12 and the sealing member 18 are disposed in the receiving groove 1111. Wherein, the bottom wall of the receiving groove 1111 forms a holding portion (not shown in the figure). That is, the atomizing top base 111 has a holding portion, that is, the atomizing base 11 has a holding portion.

[0094] Specifically, the atomizing top base 111 and the atomizing bottom base 112 sandwich the heating element 12 from both sides of the liquid absorption surface and the atomizing surface, and the sealing member 18 is sandwiched between the blank area of the heating element 12 and the atomizing top base 111; that is, the sealing member 18 is sandwiched between the blank area of the heating element 12 and the atomizing base 11.

[0095] The atomizing assembly 1 further includes 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 member 120 is fixed to the atomizing bottom base 112. The support member 120 cooperates with the holding portion to sandwich the heating element 12; specifically, the support member 120 and the holding portion sandwich the sheet-like substrate 125 from opposite sides along the thickness direction of the sheet-like substrate 125 of the heating element 12. Two electrodes 123 of the heating element 12 are disposed on a surface of the sheet-like substrate 125 close to the support member 120. The sealing member 18 is at least partially located between the heating element 12 and the holding portion; specifically, the sealing member 18 is at least partially located between the heating element 12 and the bottom wall of the receiving groove 1111. That is to say, the sealing member 18 is entirely located on the surface of the heating element 12 close to the holding portion; or, the sealing member 18 is partially located on the surface of the heating element 12 close to the holding portion and partially located on the side surface of the heating element 12; or, the sealing member 18 is partially located on the surface of the heating element 12 close to the holding portion, partially located on the side surface of the heating element 12, and partially located on the surface of the heating element 12 away from the holding portion, which is specifically designed according to needs.

[0096] The arrangement manner among the support member 120, the sealing member 18 and the atomizing base 11 plays a protective role on the sheet-like heating element 12, which is called the protection structure of the heating element 12.

[0097] In another embodiment, it is also possible not to provide the receiving groove 1111 on the atomizing top base 111, so that the bottom wall of the receiving groove 1111 is used as the holding portion, and the holding portion can be formed by other structures of the atomizing base 11, as long as the holding portion can cooperate with the support member 120 to sandwich the heating element 12. In still another embodiment, the end face of the cavity wall of the liquid storage cavity 13 close to the heating element 12 abuts 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 cooperates with the support member 120 to sandwich the heating element 12; that is to say, the end face of the cavity wall of the liquid storage cavity 13 close to the heating element 12 serves as the holding portion (such asFigure 9b As shown Figure 9b is a partial structural schematic diagram of another embodiment of the atomization component provided by the present application). The setting method of the abutting portion is designed according to needs, and the present application does not limit this.

[0098] The end of the heating element 12 can be lapped on the atomization top seat 111 and / or the atomization base 112. The support member 120 is at least partially disposed at an intermediate position of the heating element 12 (this intermediate position does not refer to the exact center of the heating element 12, but refers to other positions of the heating element 12 except for the edges), rather than the edge of the heating element 12, to further fix the heating element 12. This is because the sheet-shaped heating element 12 has a relatively small strength. If the edge of the heating element 12 is clamped, too much of the middle part of the heating element 12 is suspended, and the risk of rupture is relatively large. In a specific embodiment, the support member 120 is at least partially disposed at the 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.

[0099] The seal 18 at least covers the area of the heating element 12 corresponding to the support member 120. The seal 18 is provided with a liquid inlet 181, so that at least part of the heating element 12 is exposed, that is, at least part of the plurality of first micropores 1213 is exposed, so as to be in fluid communication with the liquid storage cavity 13; that is, at least part of the liquid absorption surface of the heating element 12 is exposed from the liquid inlet 181 of the seal 18 to absorb the aerosol-forming matrix. When the entire surface of the dense matrix 121 is provided with the first micropores 1213, the liquid inlet 181 at least exposes the first micropores 1213 corresponding to the atomization area; when the dense matrix 121 is provided with a micropore array area 1218 and a blank area 1219, the liquid inlet 181 at least exposes the first micropores 1213 corresponding to the atomization area in the micropore array area 1218. Preferably, the liquid inlet 181 completely exposes the entire micropore array area 1218 of the liquid absorption surface.

[0100] The liquid inlet 181 on the seal 18 connects the liquid down-channel 114 on the atomization top seat 111 with the first micropores 1213 on the dense matrix 121; the liquid down-channel 114 connects the liquid inlet 181 with the liquid storage cavity 13, and the aerosol-forming matrix in the liquid storage cavity 13 enters the heating element 12 through the liquid down-channel 114 and the liquid inlet 181. That is to say, the liquid absorption surface of the heating element 12 is in fluid communication with the liquid storage cavity 13 through the liquid inlet 181 of the seal 18. The heating element 12 and the atomization base 112 cooperate to form an atomization cavity 115. Specifically, the atomization surface of the heating element 12 and the atomization base 112 cooperate to form an atomization cavity 115.

[0101] It can be understood that in other embodiments, the liquid inlet 181 on the seal 18 enables the heating element 12 to be in direct fluid communication with the liquid storage chamber 13; that is to say, there is no need to provide a liquid downward channel 114, and the aerosol generating matrix in the liquid storage chamber 13 can enter the heating element 12 only through the liquid inlet 181.

[0102] The fixing of the heating element 12 is achieved through the cooperation of the support member 120 and the atomization seat 11; that is to say, the support member 120 and the atomization seat 11 clamp the heating element 12 to achieve the fixing of the heating element 12. Since the material of the dense matrix 121 in the heating element 12 is glass or dense ceramic, if the clamping force for fixing the heating element 12 is too large, the heating element 12 is likely to break, which is not conducive to the application of the heating element 12 in the product. To solve this problem, the seal 18 at least covers the area of the heating element 12 corresponding to the support member 120. While achieving sealing, the seal 18 serves as a buffer member and can counteract the excessive pressure from the support member 120, thereby preventing the heating element 12 from breaking.

[0103] In one embodiment, a plurality of first micropores 1213 are arranged in an array on the entire surface of the dense matrix 121 in the heating element 12; that is, the heating film 122 and the electrode 123 both have second micropores 1221 corresponding to the plurality of first micropores 1213. Even if the entire surface of the dense matrix 121 is provided with the first micropores 1213, by making the seal 18 at least cover the area of the heating element 12 corresponding to the support member 120, the seal 18 can buffer the force exerted by the support member 120 on the heating element 12, and it can still be applied to the product.

[0104] In another embodiment, only a part of the surface of the dense matrix 121 in the heating element 12 is provided with a plurality of first micropores 1213 in an array arrangement. That is, the dense matrix 121 is provided with a micropore array region 1218 and a blank region 1219 arranged around the micropore array region 1218 for one week; a plurality of first micropores 1213 are arranged in the micropore array region 1218, and no first micropores 1213 are arranged in the blank region 1219. The electrode 123 is at least partially arranged in the blank region 1219 of the atomization surface, and the heating film 122 is arranged in the micropore array region 1218 of the atomization surface; the seal 18 is arranged in the blank region 1219 of the liquid absorption surface. It can be understood that since the support 120 is arranged on the side of the heating element 12 away from the seal 18, that is, the support 120 is arranged on the atomization surface; the heating film 122 is arranged in the micropore array region 1218 of the atomization surface. In order to avoid the influence of the support 120 on the atomization efficiency and taste, the support 120 is arranged in the blank region of the atomization surface, and the corresponding seal 18 is arranged in the blank region 1219 of the liquid absorption surface and at least covers the area corresponding to the support 120. Preferably, the seal 18 completely covers the blank region 1219 of the liquid absorption surface, so as to simplify the production process of the seal 18 and facilitate assembly; at this time, the liquid inlet 181 on the seal 18 completely exposes the micropore array region 1218 of the liquid absorption surface. Without considering the atomization efficiency and taste, the seal 18 can also be arranged in both the blank region 1219 and the micropore array region 1218 (the heating element 12 can still atomize the aerosol-forming matrix), as long as the heating element 12 can be prevented from cracking. Among them, the electrode 123 can be partially arranged in the blank region 1219 and partially arranged in the micropore array region 1218; the electrode 123 can also be completely arranged in the blank region 1219, as long as the stable electrical connection between the electrode 123 and the heating film 122 and between the electrode 123 and the conduction member 17 can be achieved. The specific arrangement mode of the electrode 123 can be designed according to needs.

[0105] See Figure 9a, the surface of the seal 18 away from the liquid storage chamber 13 has two positioning portions 182; the two positioning portions 182 are opposite and spaced apart; the heating element 12 is disposed between the two positioning portions 182. The two positioning portions 182 limit the heating element 12 to prevent the heating element 12 from shaking. In the present embodiment, the surface of the seal 18 away from the liquid storage chamber 13 includes a first side and a second side opposite to the first side, and a third side and a fourth side connecting the first side and the second side; the positioning portion 182 is strip-shaped, one is disposed on the first side, and the other is disposed on the second side; the distance between the first end of the positioning portion 182 and the third side is greater than or equal to zero, the distance between the second end of the positioning portion 182 and the fourth side is greater than or equal to zero, and the distance between the first end of the positioning portion 182 and the third side is the same as the distance between the second end of the positioning portion 182 and the fourth side. The specific setting manner of the positioning portion 182 can be designed according to needs as long as it can achieve the limitation of the heating element 12.

[0106] See Figure 2 , Figure 8 and Figure 9a , the conducting member 17 is a thimble, one end of the thimble abuts against the electrode of the heating element 12, and the other end of the thimble is used for electrical connection with the power supply assembly 2.

[0107] In one embodiment, the support member 120 includes two conductive support members, and the two conductive support members respectively abut against the two electrodes 123. The two conductive support members are two thimbles and are rigidly fixed on the atomization base 11. That is, the thimble also serves as the support member 120. The seal 18 at least covers the area corresponding to the thimble on the liquid absorption surface of the heating element 12. Specifically, the atomization top base 111 has a receiving groove 1111, the heating element 12 is disposed in the receiving groove 1111, the seal 18 is disposed between the bottom wall of the receiving groove 1111 and the liquid absorption surface of the heating element 12, and the thimble cooperates with the atomization top base 111 to clamp the heating element 12 to realize the fixation of the heating element 12.

[0108] Please refer to Figure 10 , Figure 10 is a partial structural schematic diagram of another embodiment of the atomization assembly provided by the present application.

[0109] Figure 10 The structure of the atomization assembly 1 provided is basically the same as that of the Figure 2 atomization assembly 1 provided, except that the settings of the conducting member 17 and the support member 120 are different.

[0110] In another embodiment, the conducting member 17 is a spring piece or a spring pin and is fixed on the atomization base 112. The atomization base 112 abuts against the atomization surface of the heating element 12, and the atomization base 112 also serves as the support member 120. Optionally, the atomization base 112 abuts against the blank area 1219 of the atomization surface of the heating element 12 to facilitate atomization efficiency and taste. Specifically, the atomization base 112 includes a main body and support columns arranged on the main body, and the support columns abut against the atomization surface of the heating element 12 (as Figure 10 shown); or, the atomization base 112 includes a main body and a hollow boss arranged on the main body, and the hollow boss abuts against the atomization surface of the heating element 12; the specific structure of the atomization base 112 can be designed according to needs, as long as it can cooperate with the atomization top seat 111 to clamp and fix the heating element 12.

[0111] Please refer to Figure 11 , Figure 11 which is a partial structural schematic diagram of another embodiment of the atomization assembly provided by the present application.

[0112] Figure 11 The structure of the atomization assembly 1 provided is basically the same as that of the atomization assembly 1 provided by Figure 2 , the difference being the different arrangements of the conducting member 17 and the support member 120.

[0113] In yet another embodiment, the conducting member 17 is a spring piece or a spring pin and is fixed on the atomization base 112. The support member 120 is an annular structure independent of the atomization seat 11, and one surface of the support member 120 abuts against the atomization surface of the heating element 12. Optionally, the support member 120 abuts against the blank area 1219 of the atomization surface of the heating element 12 to facilitate atomization efficiency and taste. Specifically, the support member 120 is arranged in the receiving groove 1111 of the atomization top seat 111 by snap connection or is supported by the atomization base 112 and arranged in the receiving groove 1111 of the atomization top seat 111. During the assembly process, first, the sealing member 18 and the heating element 12 are sequentially arranged in the receiving groove 1111 of the atomization top seat 111, and then the support member 120 is snap-connected to the receiving groove 1111 or arranged in the receiving groove 1111 through the atomization base 112; the heating element 12 is clamped and fixed by the support member 120 and the atomization top seat 111.

[0114] Please refer to Figure 12 , Figure 12 which is Figure 3 a partial structural schematic diagram provided.

[0115] Under normal circumstances, the material of the atomization base 11 is plastic, and the material of the seal 18 is silicone or fluororubber. During the atomization process of the thin heating element 12, external gas easily enters the liquid storage cavity 13 through the multiple first micropores 1213 on the heating element 12. That is, bubbles will flow back through the first micropores 1213 from the atomization surface of the heating element 12, and the bubbles are likely to adhere to the silicone part to form large bubbles. That is, the reflux bubbles are likely to adhere to the side surface of the liquid inlet 181 of the seal 18 (around the liquid absorption surface of the heating element 12) to form large bubbles, which affects the liquid supply and causes poor liquid supply. Since bubbles are relatively not easy to adhere to the atomization base 11 (plastic part), reducing the thickness of the liquid inlet 181 of the seal 18 (silicone part) can reduce the influence of reflux bubbles on the liquid supply. To solve this problem, the side surface of the liquid inlet 181 can be provided with a liquid-loving structure. The liquid-loving structure can improve the hydrophilicity and / or lipophilicity of the side surface of the liquid inlet 181, so that the side surface of the liquid inlet 181 has a smaller contact angle and stronger wettability with the aerosol generation matrix. The liquid-loving structure is a micro-structure formed by modifying the side surface of the liquid inlet 181. In one embodiment, the liquid-loving structure is an isolation layer that at least covers a part of the side surface of the liquid inlet 181 to reduce the influence of reflux bubbles on the liquid supply; wherein, the material of the isolation layer has stronger wettability than the material of the seal 18, or the contact angle between the material of the isolation layer and the aerosol generation matrix is smaller than the contact angle between the material of the seal 18 and the aerosol generation matrix.

[0116] In one embodiment, the isolation layer is a coating or patch provided on the side surface of the liquid inlet 181. The material of the isolation layer is one of polysiloxane and vinyl acetate, and the hydrophilicity and / or lipophilicity of these materials are better than those of silicone and fluororubber.

[0117] In one embodiment, there is a protrusion 117 on the bottom wall of the receiving groove 1111 of the atomization top base 111, that is to say, the protrusion 117 is provided on the surface of the abutting part close to the seal 18. The protrusion 117 covers at least a part of the side surface of the liquid inlet 181. Optionally, the surface of the protrusion 117 has a coating, and the material of the coating is one of polysiloxane and vinyl acetate, so as to reduce the influence of reflux bubbles on the liquid supply; or, the material of the protrusion 117 is one of plastic, glass and silicon, and the hydrophilicity of these materials is better than the hydrophilicity and / or lipophilicity of silicone and fluororubber, so as to reduce the influence of reflux bubbles on the liquid supply; or, the material of the protrusion 117 is one of plastic, glass and silicon, and the surface of the protrusion 117 has a coating, and the material of the coating is one of polysiloxane and vinyl acetate, so as to reduce the influence of reflux bubbles on the liquid supply. Optionally, the protrusion 117 is integrally formed with, adhesively fixed to, or snap-fitted to the atomization top base 111, which is specifically designed according to needs.

[0118] When the isolation layer is the convex part 117 of the atomizing base 11, and the material of the convex part 117 is one of plastic, glass and silicon, the convex part 117 covers at least part of the side surface of the liquid inlet 181, so as to reduce the contact area between the reflux bubbles and the liquid inlet 181 of the seal 18, and further minimize the influence of the reflux bubbles on the liquid supply. Among them, there is a gap between the end surface of the convex part 117 close to the heating element 12 and the heating element 12, so as to prevent the convex part 117 of the atomizing top base 111 from directly pressing force on the heating element 12. See Figure 8 , the size of the liquid inlet 181 of the seal 18 is not uniform in its extending direction. Specifically, the liquid inlet 181 includes a first liquid inlet section and a second liquid inlet section that are communicated with each other; the first liquid inlet section is located on the side of the second liquid inlet section away from the heating element 12, and the size of the first liquid inlet section is larger than that of the second liquid inlet section, and a stepped structure is formed on the side surface of the liquid inlet 181. That is, on the surface of the seal 18 away from the heating element 12, and a notch is provided around the liquid inlet 181 to form a stepped structure on the side surface of the liquid inlet 181. See Figure 12 , the end of the convex part 117 abuts against the connection surface of the first liquid inlet section and the second liquid inlet section, that is, the end of the convex part 117 abuts against the bottom surface of the stepped structure; and the convex part 117 completely covers the side surface of the first liquid inlet section.

[0119] Furthermore, the surface of the convex part 117 away from the liquid supply channel 114 has a surrounding bone 1172. The surrounding bone 1172 covers at least part of the side surface of the second liquid inlet section, further reducing the contact area between the bubbles and the liquid inlet 181, and minimizing the influence of the bubbles on the liquid supply. Among them, there is a gap between the end surface of the surrounding bone 1172 close to the heating element 12 and the heating element 12, so as to prevent the surrounding bone 1172 on the convex part 117 from directly pressing force on the heating element 12.

[0120] Please refer to Figure 13 , Figure 13 is Figure 12 the schematic structural diagram of the cooperation between another embodiment of the convex part and the liquid inlet of the seal in

[0121] In another embodiment, the size of the liquid inlet 181 of the seal 18 is uniform in its extending direction. The side surface of the liquid inlet 181 is parallel to the axis of the atomizing assembly 1. The convex part 117 covers part of the side surface of the liquid inlet 181, and there is a gap between the end surface of the convex part 117 close to the heating element 12 and the heating element 12. It can be understood that the more the side surface of the liquid inlet 181 is covered by the convex part 117, the more beneficial it is to reduce the influence of the reflux bubbles on the liquid supply, as long as the convex part 117 does not directly press force on the heating element 12.

[0122] To solve the problem that the reflux bubbles are easily adhered to the seal 18 (silicone part) and affect the liquid supply, the seal 18 can be arranged between the side surface of the heating element 12 and the cavity wall of the receiving cavity 113, so that the liquid suction surface is completely exposed to the liquid supply channel 114, and sealing can be achieved. Optionally, the port of the liquid supply channel 114 abuts against the liquid suction surface of the heating element 12; that is, the liquid suction surface of the heating element 12 is directly in fluid communication with the liquid supply channel 114 without passing through any components. Among them, the material of the atomization seat 11 has stronger wettability than the material of the seal 18, or the contact angle between the material of the atomization seat 11 and the aerosol-forming substrate is smaller than the contact angle between the material of the seal 18 and the aerosol-forming substrate. In one embodiment, the seal 18 is arranged around the side surface of the heating element 12 and is only arranged between the side surface of the heating element 12 and the cavity wall of the receiving cavity 113; in another embodiment, the seal 18 is only arranged between the side surface of the heating element 12 and the cavity wall of the receiving cavity 113 and on the atomization surface of the heating element 12, and the seal 18 completely exposes the heating film 122. That is to say, the surface of the heating element 12 close to the liquid storage cavity 13 is not covered with the seal 18, and there is no possibility that the reflux bubbles adhere to the seal 18 during the atomization process; at the same time, the port of the liquid supply channel 114 abuts against the liquid suction surface of the heating element 12, and the reflux bubbles do not affect the smoothness of the liquid supply.

[0123] The following is verified by experiments the influence of the thickness of the dense matrix 121 and the pore diameter of the first micropores 1213 provided in the present application on the liquid supply efficiency.

[0124] The liquid supply efficiency of the heating element 12 is evaluated through the wet burning experiment of the heating element 12. The direct current power supply is used, and the thimble 20 of the power supply assembly 2 (the thimble 20 is electrically connected to the battery) is respectively connected to the electrodes 123 of the heating element 12, the power-on power and the power-on time are controlled, and an infrared thermal imager or a thermocouple is used to measure the temperature of the heating film 122.

[0125] When the heating film 122 is powered on, the temperature rises instantaneously, so that the aerosol-forming substrate in the first micropores 1213 is vaporized. As the aerosol-forming substrate in the first micropores 1213 is consumed, the capillary action of the first micropores 1213 continuously replenishes the aerosol-forming substrate in the liquid storage cavity 13 to the heating film 122.

[0126] The flow of the aerosol-forming substrate in the first micropores 1213 with capillary action can be estimated according to the Washburn equation. S is the pore area of the first micropores 1213, ρ is the density of the aerosol-forming substrate, z is the distance passed by the aerosol-forming substrate, γ is the surface tension, μ is the viscosity of the aerosol-forming substrate, r is the radius of the first micropores 1213, and θ is the contact angle of the aerosol-forming substrate with the material of the dense matrix 121. The atomization amount of the aerosol-forming substrate is as follows:

[0127]

[0128] As can be seen from the formula, after determining the materials of the aerosol-forming substrate and the dense matrix 121, ρ, γ, μ, and θ remain unchanged. The larger the pore diameter of the first micropores 1213, the more sufficient the liquid supply, but the risks of leakage due to negative pressure during air transportation and temperature shock during use of the product will also be greater. Therefore, the thickness, pore diameter, and thickness-to-diameter ratio of the dense matrix 121 are very important. It is necessary to ensure sufficient liquid supply during the atomization process and prevent the aerosol-forming substrate from leaking out.

[0129] Install the heating element 12 for testing and evaluate the relationship between the thickness of the dense matrix 121 / the pore diameter of the first micropores 1213 and the atomization amount. The results are as Figure 14 shown ( Figure 14 is a graph showing the relationship between the thickness of the dense matrix / the pore diameter of the first micropores of the heating element provided in this application and the atomization amount). From Figure 14 it can be seen that when the ratio of the thickness of the dense matrix 121 to the pore diameter of the first micropores 1213 is too large, the aerosol-forming substrate supplied by capillary action is difficult to meet the atomization demand, and the atomization amount decreases. When the ratio of the thickness of the dense matrix 121 to the pore diameter of the first micropores 1213 is too small, the aerosol-forming substrate easily flows out from the first micropores 1213 to the surface of the heating film 122, resulting in a decrease in atomization efficiency and a reduction in the atomization amount.

[0130] The above are only some embodiments of this application, and thus do not limit the protection scope of this application. Any equivalent device or equivalent process transformation made by using the content of the specification and drawings of this application, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of this application.

Claims

1. An atomizing component, characterized in that, Comprising: A liquid storage cavity for storing an aerosol - generating substrate; A heating element, the heating element includes a sheet - like substrate, electrodes, and a heating element; the sheet - like substrate is a dense substrate, the dense substrate includes an atomization surface and a liquid absorption surface opposite to the atomization surface; the dense substrate is provided with a microporous array region and a blank region adjacent to the microporous array region; the microporous array region has a plurality of first micropores, the first micropores are through - holes penetrating the atomization surface and the liquid absorption surface; the first micropores are in communication with the liquid storage cavity; the thickness of the dense substrate is 0.1 mm - 1 mm; the electrodes are arranged in the blank region of the atomization surface; the heating element is arranged on the dense substrate and is electrically connected to the electrodes for heating and atomizing the aerosol - generating substrate; An atomization base, the atomization base includes an atomization top base and an atomization bottom base, the atomization top base and the atomization bottom base respectively clamp the heating element from both sides of the liquid absorption surface and the atomization surface; A seal, arranged on the liquid absorption surface and covering at least a part of the blank region of the liquid absorption surface; the seal is clamped between the blank region of the heating element and the atomization top base; the material of the seal is silica gel or fluororubber.

2. The atomization component according to claim 1, wherein The seal completely covers the blank region of the liquid absorption surface; a liquid inlet is arranged on the seal so that the microporous array region of the liquid absorption surface is completely exposed.

3. The atomization component according to claim 1, characterized in that, A liquid inlet is arranged on the seal so that the microporous array region is exposed; the atomization top base has a liquid - downward channel; the liquid - downward channel communicates the liquid inlet with the liquid storage cavity; the heating element and the atomization bottom base cooperate to form an atomization cavity.

4. The atomization component according to claim 1, characterized in that, The material of the atomization base is plastic.

5. The atomization component according to claim 1, wherein The atomization assembly further includes a thimble; one end of the thimble abuts against the electrode of the heating element, and the other end of the thimble is used for electrically connecting with a power supply assembly; the seal covers at least the area of the liquid absorption surface corresponding to the thimble; the thimble is fixed on the atomization base.

6. The atomization component according to claim 1, characterized in that, The sheet - like substrate is flat; the blank region is arranged around the microporous array region for one week.

7. The atomization component according to claim 6, wherein The blank region includes two first sub - blank regions and two second sub - blank regions. The two first sub - blank regions are respectively located on the opposite sides of the microporous array region along a first direction, and the two second sub - blank regions are respectively located on the opposite sides of the microporous array region along a second direction, the second direction is perpendicular to the first direction; the width of the first sub - blank region is greater than the width of the second sub - blank region; the electrodes are arranged in the first sub - blank region.

8. The atomization component according to claim 7, wherein, The width of the first sub - blank region is 2.1 mm - 2.6 mm; the width of the second sub - blank region is greater than or equal to 0.5 mm.

9. The atomization component according to claim 7, wherein The dense substrate is a rectangular flat plate, and the plurality of first micropores in the microporous array region are arranged in a rectangular array; the widths of the two first sub - blank regions are the same, and the widths of the two second sub - blank regions are the same.

10. The atomization component according to claim 1, characterized in that, The material of the dense substrate is glass, and the glass is borosilicate glass, quartz glass or photosensitive lithium aluminosilicate glass.

11. The atomization component according to claim 1, wherein, The aperture of the first micropore is 1 μm - 100 μm.

12. The atomization component according to claim 1, characterized in that The ratio of the thickness of the dense substrate to the aperture of the first micropore is 20:1 - 3:

1.

13. The atomization component according to claim 1, wherein The ratio of the center-to-center distance between adjacent first micro-holes to the pore diameter of the first micro-holes is 3:1 - 1.5:

1.

14. The atomization component according to claim 1, characterized in that, The heating element is a heating film, which is arranged in the micro-hole array area on the atomization surface; the heating film has a plurality of second micro-holes that correspond to and communicate with the plurality of first micro-holes one by one.

15. The atomization assembly according to claim 14, wherein, The material of the heating film is silver or silver alloy or copper or copper alloy or aluminum or aluminum alloy or gold or gold alloy, and the thickness range of the heating film is 200 nm - 5 μm.

16. An electronic atomization device, characterized in that, It includes an atomization component and a power supply component. The atomization component is the atomization component according to any one of claims 1 - 15, and the power supply component controls the operation of the atomization component.

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