Atomization component and electronic atomization device

Abstract

The present application discloses an atomization component and an electronic atomization device, wherein the atomization component comprises a liquid storage chamber, an atomization seat, a heating element, and a sealing element; the liquid storage chamber is used to store a liquid aerosol generating matrix; the heating element is arranged on the atomization seat; the sealing element is used to seal the periphery of the heating element; a liquid inlet is arranged on the sealing element; the liquid inlet exposes the heating element at least partially so as to communicate with the fluid of the liquid storage chamber; the side surface of the liquid inlet has a lyophilic structure, so that the side surface of the liquid inlet has a smaller contact angle and stronger wettability with the aerosol generating matrix, thereby reducing the influence of reflux bubbles on the lower liquid.

Description

Technical Field

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

[0002] The electronic atomization device is composed of a heating element, a battery, a control circuit and other parts. The heating element is the core component of the electronic atomization device, and 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. Cotton core heating elements are mostly spring-shaped metal heating wires wrapped around cotton ropes or fiber ropes; the liquid aerosol to be atomized generates a matrix that is absorbed by both ends of the cotton rope and then transferred to the central metal heating wire for heating and atomization. Ceramic heating elements are mostly formed with a heating film on the surface of a porous ceramic body, which plays the role of guiding and storing liquid.

[0004] With the advancement of technology, users have higher and higher requirements on 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, but such a thin heating element is prone to poor liquid supply during the atomization process. Summary of the invention

[0005] In view of this, the present application provides an atomization assembly and an electronic atomization device to solve the technical problem in the prior art that thin heating elements are prone to poor liquid discharge during the atomization process.

[0006] In order to solve the above technical problems, the first technical solution provided in the present application is: to provide an atomization assembly, including a liquid storage chamber, an atomization seat, a heating element and a sealing member; the liquid storage chamber is used to store a liquid aerosol generating matrix; the heating element is arranged on the atomization seat; the sealing member is used to seal the periphery of the heating element; a liquid inlet is provided on the sealing member; the liquid inlet exposes the heating element at least partially so as to communicate with the fluid of the liquid storage chamber; wherein the side surface of the liquid inlet has a lyophilic structure.

[0007] Wherein, the lyophilic structure is a microstructure formed by modifying the side surface of the liquid inlet.

[0008] Wherein, the lyophilic structure is an isolation layer that covers at least part of the side surface of the liquid inlet; wherein, the material of the isolation layer has stronger wettability than the material of the seal, or the contact angle between the material of the isolation layer and the aerosol generating matrix is ​​smaller than the contact angle between the material of the seal and the aerosol generating matrix.

[0009] Wherein, the isolation layer is a coating or a patch arranged on the side of the liquid inlet.

[0010] Wherein, the material of the isolation layer is one of polysiloxane and vinyl acetate; the material of the sealing element is silicone or fluororubber.

[0011] Wherein, the isolation layer is a raised portion of the atomizer seat.

[0012] The surface of the protrusion has a coating, and the material of the coating is one of polysiloxane and vinyl acetate; the material of the sealing element is silicone or fluororubber.

[0013] Wherein, the material of the protrusion is one of plastic, glass and silicon; the material of the sealing element is silicone or fluororubber.

[0014] Wherein, the protrusion and the atomizer seat are integrally formed, glued or snap-fitted.

[0015] Wherein, there is a gap between the end surface of the protrusion close to the heating element and the heating element.

[0016] Wherein, the atomizer seat has a lower liquid channel and a supporting portion, the sealing member is clamped between the heating element and the supporting portion, the liquid inlet is connected to the liquid storage cavity through the lower liquid channel; the protrusion is arranged on the surface of the supporting portion close to the sealing member.

[0017] Wherein, the liquid inlet includes a first liquid inlet section and a second liquid inlet section which are interconnected; the first liquid inlet section is located on a side of the second liquid inlet section away from the heating element, and the size of the first liquid inlet section is larger than that of the second liquid inlet section; the end of the raised portion abuts against the connecting surface of the first liquid inlet section and the second liquid inlet section, and the raised portion covers the side of the first liquid inlet section.

[0018] Among them, the end of the protrusion away from the lower liquid channel has a surrounding bone; the surrounding bone covers at least part of the side surface of the second liquid inlet section, and there is a gap between the end surface of the surrounding bone and the heating element.

[0019] Wherein, the atomizer seat has a lower liquid channel and a supporting portion, the sealing member is clamped between the heating element and the supporting portion, and the liquid inlet is connected to the liquid storage cavity through the lower liquid channel.

[0020] Wherein, the atomizer seat includes an atomizer top seat and an atomizer base, and the atomizer top seat is provided with a receiving groove and the lower liquid channel; the lower liquid channel is connected to the receiving groove; the bottom wall of the receiving groove forms the supporting part; the heating element and the sealing member are arranged in the receiving groove.

[0021] Wherein, the heating body comprises a sheet-like substrate and a heating element; the sheet-like substrate is in the shape of a flat plate; and the heating element is arranged on the surface of the sheet-like substrate.

[0022] Wherein, the sheet-like substrate is a glass sheet with a thickness less than or equal to 1 mm; or the sheet-like substrate is a porous ceramic sheet with a thickness less than or equal to 2 mm.

[0023] Among them, the sheet-like matrix is ​​a dense matrix, which includes an atomizing surface and a liquid absorption surface opposite to the atomizing surface; a plurality of first micropores are arranged on the dense matrix, and the first micropores are through holes that penetrate the atomizing surface and the liquid absorption surface, and the first micropores are used to guide the aerosol generating matrix to the atomizing surface; the heating element is arranged on the atomizing surface.

[0024] The dense matrix is ​​provided with a micropore array area and a blank area arranged around the micropore array area; the micropore array area has a plurality of the first micropores; and the sealing member covers the blank area of ​​the liquid absorption surface.

[0025] Wherein, the liquid inlet of the sealing member completely exposes the micropore array area.

[0026] Wherein, the surface of the sealing member away from the liquid storage cavity has two positioning parts; the two positioning parts are arranged opposite to each other and at intervals; and the heating element is arranged between the two positioning parts.

[0027] In order to solve the above technical problems, the second technical solution provided in the present application is: to provide an atomization component, including a liquid storage chamber, an atomization seat, a heating element and a sealing element; the liquid storage chamber is used to store liquid aerosol generating matrix; the atomization seat has a lower liquid channel and a receiving chamber; the lower liquid channel connects the liquid storage chamber with the receiving chamber; the heating element is arranged in the receiving chamber of the atomization seat; the sealing element is arranged between the side surface of the heating element and the cavity wall of the receiving chamber, so that the liquid absorption surface of the heating element is completely exposed to the lower liquid channel; the port of the lower liquid channel abuts against the liquid absorption surface of the heating element; wherein, the material of the atomization seat has stronger wettability than the material of the sealing element, or the contact angle between the material of the atomization seat and the aerosol generating matrix is ​​smaller than the contact angle between the material of the sealing element and the aerosol generating matrix.

[0028] Wherein, the sealing member is arranged around the side surface of the heating element and is only arranged between the side surface of the heating element and the cavity wall of the receiving cavity.

[0029] Wherein, the material of the atomizer seat is plastic, and the material of the sealing element is silicone or fluororubber.

[0030] In order to solve the above technical problems, the three technical solutions provided in this application are: providing 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.

[0031] The beneficial effects of the present application are as follows: Different from the prior art, the atomization assembly of the present application includes a liquid storage chamber, an atomization seat, a heating element, and a sealing element; the liquid storage chamber is used to store a liquid aerosol generating matrix; the heating element is arranged on the atomization seat; the sealing element is used to seal the periphery of the heating element; a liquid inlet is arranged on the sealing element; the liquid inlet exposes the heating element at least partially so as to communicate with the fluid in the liquid storage chamber; the side of the liquid inlet has a lyophilic structure, so that the side of the liquid inlet has a smaller contact angle and stronger wettability with the aerosol generating matrix, thereby reducing the influence of reflux bubbles on the lower liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 It is a schematic diagram of the structure of the electronic atomization device provided by the present application;

[0034] Figure 2 is a schematic cross-sectional structural diagram of the atomization assembly provided by the present application along a first direction;

[0035] Figure 3 is a schematic cross-sectional structural diagram of the atomization assembly provided by the present application along the second direction;

[0036] Figure 4 It is a schematic diagram of the structure of the heating element provided by the present application;

[0037] Figure 5 yes Figure 4 A schematic diagram of the structure of a dense matrix in a heating element is provided;

[0038] Figure 6 yes Figure 4 A schematic diagram of the structure of the heating element provided as viewed from the atomizing surface side;

[0039] Figure 7 yes Figure 4 A schematic diagram of the structure of the heating element provided as viewed from the liquid absorption surface side;

[0040] Figure 8 yes Figure 2 A schematic diagram of the partial structure of the atomization assembly provided;

[0041] Figure 9a yes Figure 8 A schematic diagram of the structure in another direction;

[0042] Figure 9bThis is a partial structural diagram of another embodiment of the atomizer assembly provided by the present application.

[0043] Fig.10 It is a partial structural schematic diagram of another embodiment of the atomization assembly provided by the present application;

[0044] Fig.11 It is a partial structural schematic diagram of another embodiment of the atomization assembly provided by the present application;

[0045] Fig.12 yes Figure 3 A schematic diagram of the local structure is provided;

[0046] Fig.13 yes Fig.12 A schematic structural diagram of another embodiment of the middle protrusion cooperating with the liquid inlet of the sealing member;

[0047] Fig.14 This is a relationship diagram between the dense matrix thickness / first micropore diameter and the atomization amount of the heating element provided in the present application. DETAILED DESCRIPTION

[0048] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0049] The terms "first", "second", and "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", and "third" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. All directional indications in the embodiments of this application (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "including" and "having" in the embodiments of this application and any of their variations are intended to cover non-exclusive inclusions. 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 also includes steps or units that are not listed, or optionally also includes other steps or components inherent to these processes, methods, products, or devices.

[0050] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0051] See also Figure 1 , Figure 1 It is a schematic diagram of the structure of the electronic atomization device provided in this application.

[0052] 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.

[0053] 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.

[0054] 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 .

[0055] 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.

[0056] In other embodiments, the liquid storage chamber 13 may not be formed by the shell 10, but may be an independent component, such as a liquid storage bottle. The independent liquid storage chamber 13 is arranged outside the shell 10 and connected to the internal space of the shell 10 through a needle tube to supply liquid to the heating element 12.

[0057] In this embodiment, the surface of the heating element 12 away from the liquid storage chamber 13 is the atomization surface, and an atomization chamber 115 is formed between the atomization surface of the heating element 12 and the inner wall surface of the receiving chamber 113, and the atomization chamber 115 is connected to the air outlet channel 14. An air inlet 116 is provided on the atomization base 112 to connect the outside with the atomization chamber 115. External gas enters the atomization chamber 115 through the air inlet 116, carries the atomized aerosol of the heating element 12 into the air outlet channel 14, and finally reaches the suction port 15 to be inhaled by the user.

[0058] The atomizer assembly 1 further includes a conducting member 17, which is fixed to the atomizer base 112. One end of the conducting member 17 is electrically connected to the heating element 12, and the other end is used to be electrically connected to the power supply assembly 2, so that the heating element 12 can work.

[0059] The atomizer assembly 1 also includes a seal 18 and a sealing top cover 19. The seal 18 is disposed between the heating element 12 and the atomizer top seat 111, and is used to seal the heating element 12 and the lower liquid channel 114 to prevent leakage. That is, the seal 18 is used to seal the periphery of the heating element 12. The sealing top cover 19 is disposed on the surface of the atomizer top seat 111 close to the liquid storage chamber 13, and is used to seal the liquid storage chamber 13 and the atomizer top seat 111 and the air outlet channel 14 to prevent leakage. Optionally, the seal 18 and the sealing top cover 19 are made of silicone or fluororubber.

[0060] See also Figure 3 , Figure 3 It is a schematic diagram of the cross-sectional structure of the atomization assembly provided by the present application along the second direction.

[0061] There is a gap between the outer side of the atomizer top seat 111 and the inner side of the shell 10. The external gas entering from the air inlet 116 enters the atomization chamber 115, carrying the aerosol atomized by the heating element 12, and enters the air outlet channel 14 through the gap between the outer side of the atomizer top seat 111 and the inner side of the shell 10.

[0062] See also Figure 4 and Figure 5 , Figure 4 is a schematic diagram of the structure of the heating element provided in this application, Figure 5 yes Figure 4 A schematic diagram of the structure of a dense matrix in a heating element is provided.

[0063] The heating element 12 includes a sheet substrate 125 and a heating element 126. The heating element 126 is arranged on the sheet substrate 125. The sheet substrate 125 can be a sheet-like dense substrate with a thickness of less than or equal to 1 mm, for example, the sheet-like dense substrate is a sheet of glass; the sheet substrate 125 can also be a sheet-like porous ceramic substrate with a thickness of less than or equal to 2 mm. The sheet substrate 125 with a bending strength lower than 100 MPa is easy to break when it directly contacts hard objects on both sides, and the use of the protective structure introduced later in the present invention can reduce or avoid the breakage of the sheet substrate 125. The heating element 126 can be a heating sheet, a heating film, a heating net, etc., which can be arranged on the surface of the sheet substrate 125 or buried inside the sheet substrate 125, and is specifically designed according to needs. In some embodiments, the sheet substrate 125 itself can generate heat, a self-heating ceramic heating element, and the heating element is a combination of an electrode and a sheet substrate 125.

[0064] Among them, the sheet-like shape defined by the sheet-like substrate 125 is relative to the block-like body, and the ratio of the length to the thickness of the sheet-like substrate 125 is larger than the ratio of the length to the thickness of the block-like body. In this embodiment, the sheet-like substrate 125 is a flat plate. In other embodiments, the sheet-like substrate 125 can also be an arc, a tube, etc., such as a cylindrical shape, and other structures in the atomization assembly 1 are arranged in coordination with the specific structure of the sheet-like substrate 125. The following is introduced by taking the sheet-like substrate 125 as a flat plate as an example.

[0065] The sheet substrate 125 includes an opposite liquid absorption surface and an atomization surface. In this embodiment, the heating element 126 is disposed on the atomization surface. The sheet substrate 125 in the heating element 12 is a sheet-like dense substrate 121 with a thickness of less than or equal to 1 mm, and the heating element 126 in the heating element 12 is a heating film 122.

[0066] See also Figure 5The dense matrix 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 matrix 121, and the first micropores 1213 are through holes that penetrate the first surface 1211 and the second surface 1212. Figure 4 , the heating film 122 is formed on the first surface 1211; the resistance of the heating film 122 at room temperature is 0.5 ohms-2 ohms, wherein 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 watts-8.5 watts and the voltage range of the battery is 2.5 volts-4.4 volts, 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 ohms-2 ohms. Among them, the surface on which the heating film 122 is provided on the dense matrix 121 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 micropore 1213 is used to guide the aerosol generating matrix from the liquid absorption surface to the atomization surface, and the first micropore 1213 has a capillary effect.

[0067] The present application provides a plurality of first micropores 1213 with capillary force on the dense matrix 121, so that the porosity of the heating element 12 can be precisely controlled to improve the consistency of the product. That is to say, in batch production, the porosity of the dense matrix 121 in the heating element 12 is basically consistent, and the thickness of the heating film 122 formed on the dense matrix 121 is uniform, so that the atomization effect of the electronic atomization devices produced in the same batch is consistent.

[0068] The aerosol-generating matrix in the liquid storage chamber 13 reaches the dense matrix 121 of the heating element 12 through the lower liquid channel 114, and the aerosol-generating matrix is ​​guided from the second surface 1212 to the first surface 1211 by the capillary force of the first micropores 1213 on the dense matrix 121, so that the aerosol-generating matrix is ​​atomized by the heating film 122; that is, the first micropores 1213 are connected to the liquid storage chamber 13 through the lower liquid channel 114. 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.

[0069] The following description will assume that the material of the dense matrix 121 is glass.

[0070] In a specific embodiment, the extension direction of the first micropore 1213 can be perpendicular to the thickness direction of the dense matrix 121, or it can form an angle with the thickness direction of the dense matrix 121, and the angle ranges from 80 degrees to 90 degrees. The longitudinal section of the first micropore 1213 can be rectangular, trapezoidal, dumbbell-shaped with large ends and a small middle, etc. The longitudinal section shape of the first micropore 1213 and its extension direction can be designed as needed. Since the first micropore 1213 is arranged in a regular geometric shape, the volume of the first micropore 1213 in the heating element 12 can be calculated, and thus the porosity of the entire heating element 12 can also be calculated, so that the consistency of the porosity of the heating element 12 of similar products can be well guaranteed.

[0071] The dense matrix 121 can be set to a regular shape, such as a rectangular plate, a circular plate, etc. In this embodiment, the multiple first micropores 1213 provided on the dense matrix 121 are arranged in an array; that is, the multiple first micropores 1213 provided on the dense matrix 121 are regularly arranged, and the hole center distances between adjacent first micropores 1213 in the multiple first micropores 1213 are the same. Optionally, the multiple first micropores 1213 are arranged in a rectangular array; or the multiple first micropores 1213 are arranged in a circular array; or the multiple first micropores 1213 are arranged in a hexagonal array. Among them, the apertures of the multiple first micropores 1213 can be the same or different, and are designed according to needs.

[0072] The first surface 1211 and the second surface 1212 of the dense substrate 121 both include smooth surfaces, and the first surface 1211 is a plane. In other words, the first surface 1211 of the dense substrate 121 is a smooth surface and a plane, and the heating film 122 is formed on the first surface 1211. The first surface 1211 is a smooth surface, which is conducive to the deposition of metal materials into films with a small thickness.

[0073] In one embodiment, the first surface 1211 and the second surface 1212 of the dense matrix 121 are both smooth surfaces and planes, and the first surface 1211 and the second surface 1212 of the dense matrix 121 are arranged in parallel; the first micropore 1213 runs 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 runs 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 microhole 1213 can be a straight through hole with uniform aperture or a straight through hole with non-uniform aperture, as long as the aperture variation range is within 50%. For example, due to the limitation of the preparation process, the first microhole 1213 opened on the glass by laser induction and etching usually has a large aperture at both ends and a small aperture in the middle. Therefore, it is sufficient to ensure that the aperture of the middle part of the first microhole 1213 is not less than half of the aperture of the two end ports.

[0074] In another embodiment, the first surface 1211 of the dense matrix 121 is a smooth surface and a plane, so as to facilitate the deposition of the metal material into a film with a small thickness. The second surface 1212 of the dense matrix 121 is a smooth surface, and the second surface 1212 can be a non-planar surface, such as an inclined surface, a curved surface, a serrated surface, etc. The second surface 1212 can be designed according to specific needs, and the first micropores 1213 only need to pass through the first surface 1211 and the second surface 1212.

[0075] Compared with the existing cotton core heating elements and porous ceramic heating elements, the heating element 12 with a thin sheet structure with micropores provided in the present application has a shorter liquid supply channel and a faster liquid supply speed, but a greater risk of liquid leakage. Therefore, the inventors of the present application studied the effect of the ratio of the thickness of the dense matrix 121 to the aperture of the first micropore 1213 on the liquid conduction of the heating element 12. The results showed that increasing the thickness of the dense matrix 121 and reducing the aperture of the first micropore 1213 can reduce the risk of liquid leakage but also reduce the liquid supply rate, while reducing the thickness of the dense matrix 121 and increasing the aperture of the first micropore 1213 can increase the liquid supply rate but increase the risk of liquid leakage, which are contradictory. To this end, the present application designs the thickness of the dense matrix 121, the aperture of the first micropore 1213, and the ratio of the thickness of the dense matrix 121 to the aperture of the first micropore 1213, so that the heating element 12 can achieve sufficient liquid supply and prevent liquid leakage when the power is 6 watts to 8.5 watts and the voltage is 2.5 volts to 4.4 volts. Among them, the thickness of the dense matrix 121 is the distance between the first surface 1211 and the second surface 1212.

[0076] In addition, the inventor of the present application studied the ratio of the hole center distance of adjacent first micropores 1213 to the pore diameter of the first micropore 1213, and found that if the ratio of the hole center distance of adjacent first micropores 1213 to the pore diameter of the first micropore 1213 is too large, the strength of the dense matrix 121 is relatively large and it is easy to process, but the porosity is too small, which easily leads to insufficient liquid supply; if the ratio of the hole center distance of adjacent first micropores 1213 to the pore diameter of the first micropore 1213 is too small, the porosity is relatively large, the liquid supply is sufficient, but the strength of the dense matrix 121 is relatively small and it is not easy to process; for this reason, the present application also designs the ratio of the hole center distance of adjacent first micropores 1213 to the pore diameter of the first micropore 1213, so as to improve the strength of the dense matrix 121 as much as possible while meeting the liquid supply capacity.

[0077] The following describes the thickness of the dense matrix 121, the aperture of the first micropores 1213, the ratio of the thickness of the dense matrix 121 to the aperture of the first micropores 1213, and the ratio of the center distance between two adjacent first micropores 1213 to the aperture of the first micropores 1213, assuming that 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.

[0078] 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 demand cannot be met, resulting in a decrease in the amount of aerosol, and the heat loss caused is large, and the cost of setting the first micropore 1213 is high; 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 aperture of the first micropore 1213 on the dense matrix 121 is 1 micron-100 microns. When the aperture of the first micropore 1213 is less than 1 micron, the liquid supply demand cannot be met, resulting in a decrease in the amount of aerosol; when the aperture of the first micropore 1213 is greater than 100 microns, the aerosol generation matrix is ​​easy to flow out of the first micropore 1213 to the first surface 1211 to cause leakage, resulting in a decrease in atomization efficiency. Preferably, the pore size of the first micropore 1213 is 20 micrometers to 50 micrometers. It is understandable that the thickness of the dense matrix 121 and the pore size of the first micropore 1213 are selected according to actual needs.

[0079] The ratio of the thickness of the dense matrix 121 to the pore size of the first micropore 1213 is 20:1-3:1; preferably, the ratio of the thickness of the dense matrix 121 to the pore size of the first micropore 1213 is 15:1-5:1 (see Fig.14 , it is found through experiments that when the ratio of the thickness of the dense matrix 121 to the aperture of the first micropore 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 aperture of the first micropore 1213 is greater than 20:1, the aerosol generation matrix supplied by the capillary force of the first micropore 1213 is difficult to meet the atomization demand of the heating element 12, which is not only easy to cause 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 aperture of the first micropore 1213 is less than 3:1, the aerosol generation matrix is ​​easy to flow out of the first micropore 1213 to the first surface 1211, the aerosol generation matrix is ​​wasted, resulting in a decrease in atomization efficiency, and then a decrease in the total aerosol amount.

[0080] The ratio of the center distance between two adjacent first micropores 1213 to the pore size of the first micropores 1213 is 3:1-1.5:1, so that the first micropores 1213 on the dense matrix 121 can improve the strength of the dense matrix 121 as much as possible while satisfying the liquid supply capacity; preferably, the ratio of the center distance between two adjacent first micropores 1213 to the pore size of the first micropores 1213 is 3:1-2:1; more preferably, the ratio of the center distance between two adjacent first micropores 1213 to the pore size of the first micropores 1213 is 3:1-2.5:1.

[0081] In a specific embodiment, preferably, the ratio of the thickness of the dense matrix 121 to the pore size of the first micropore 1213 is 15:1-5:1, and the ratio of the center distance between two adjacent first micropores 1213 to the pore size of the first micropore 1213 is 3:1-2.5:1.

[0082] It can be understood that the thickness of the dense matrix 121, the pore size of the first micropore 1213, the ratio of the thickness of the dense matrix 121 to the pore size of the first micropore 1213, and the ratio of the center distance between adjacent first micropores 1213 to the pore size of the first micropore 1213 provided in the present application can be designed in combination as needed.

[0083] Since the dense matrix 121 in the heating element 12 is a dense material, it can play a role of 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 is no requirement 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.

[0084] 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 of the heating film 122 is in the range of 200 nanometers to 5 micrometers, that is, the thickness of the heating film 122 is relatively thin; preferably, the thickness of the heating film 122 is in the range of 200 nanometers to 1 micrometer; more preferably, the thickness of the heating film 122 is in the range of 200 nanometers to 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 the plurality of first micropores 1213 one by one and are interconnected. Furthermore, the heating film 122 is also formed on the inner surface of the first micropore 1213; preferably, the heating film 122 is also formed on the entire inner surface of the first micropore 1213 (structure such as Figure 4 A heating film 122 is provided on the inner surface of the first micropore 1213, so that the aerosol generating substrate can be atomized in the first micropore 1213, which is beneficial to improving the atomization effect.

[0085] The thinner the heating film 122 is, the smaller the impact on the aperture of the first micropore 1213 is, thereby achieving a better atomization effect; and the thinner the heating film 122 is, the less heat the heating film 122 itself absorbs, the lower the electric heat loss is, 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 ohms-2 ohms, this application uses a metal material with low conductivity to form a thinner metal film to minimize the impact on the aperture of the first micropore 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 for heating, the heating film 122 can heat up quickly, directly heat the aerosol-generating matrix in the first micropores 1213, and achieve efficient atomization.

[0086] Furthermore, the inventors of the present application have found that the liquid aerosol generation matrix contains various flavors and additives, including sulfur, phosphorus, chlorine and other elements, and silver and copper are prone to corrosion failure when the heating film 122 is powered on and heated. Gold has very strong chemical inertness, and a dense oxide film is formed on the surface of aluminum. These two materials are very stable in the liquid aerosol generation matrix and are preferably used as the heating film 122 material.

[0087] The heating film 122 can 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 (plasma-assisted chemical deposition, laser-assisted chemical deposition, metal organic compound deposition). It is understandable that the formation process of the heating film 122 does not cover the first micropores 1213, that is, the first micropores 1213 penetrate the heating film 122. When the heating film 122 is formed on the first surface 1211 of the dense substrate 121 by physical vapor deposition or chemical vapor deposition, the heating film 122 is also formed on the inner surface of the first micropores 1213. When magnetron sputtering is used to form the heating film 122 on the first surface 1211 of the dense matrix 121, the metal atoms are perpendicular to the first surface 1211 and parallel to the inner surface of the first micropore 1213 during magnetron sputtering, and the metal atoms are more easily deposited on the first surface 1211; assuming that the thickness of the heating film 122 formed by the metal atoms deposited 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 micropore 1213 is much less than 1 micron, and even less than 0.5 microns; 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 micropore 1213, and the smaller the impact on the aperture of the first micropore 1213. Since the thickness of the heating film 122 is much smaller than the aperture of the first micropore 1213, and the thickness of the portion of the heating film 122 deposited in the first micropore 1213 is smaller than the thickness of the portion deposited on the first surface 1211 of the dense matrix 121, the effect of the heating film 122 deposited in the first micropore 1213 on the aperture of the first micropore 1213 can be ignored.

[0088] See also Figure 6 and Figure 7 , Figure 6 yes Figure 4 The schematic diagram of the structure of the heating element provided is viewed from the atomizing surface side. Figure 7 yes Figure 4 A schematic diagram of the structure of the heating element provided is viewed from the liquid absorption side.

[0089] The heating element 12 also 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 atomizing surface and a liquid absorption surface opposite to the atomizing surface. The heating film 122 and the electrode 123 are arranged on the atomizing surface and are electrically connected to each other; that is, the heating element 126 and the electrode 123 are arranged on the atomizing surface and are electrically connected to each other. A plurality of first micropores 1213 are arranged on the dense matrix 121, that is, a plurality of first micropores 1213 can be arranged in an array on the entire surface of the dense matrix 121, or a plurality of first micropores 1213 can be arranged in an array on only a part of the surface of the dense matrix 121. Among them, the heating film 122 is a thin film, and the heating film 122 has a plurality of second micropores 1221 that correspond one-to-one to the plurality of first micropores 1213 and are interconnected.

[0090] The inventor of the present application has found that the more the number of first micropores 1213 provided on the dense matrix 121 is, the lower the strength of the dense matrix 121 is, which is not conducive to applying the heating element 12 to the product. Therefore, preferably, a plurality of first micropores 1213 are provided in an array arrangement only on a part of the surface of the dense matrix 121, as described in detail below.

[0091] The dense matrix 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 has a plurality of first micropores 1213, and the first micropores 1213 are through holes that penetrate 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 electrode 123 is arranged in the blank area 1219 of the atomization surface. The heating film 122 is arranged in the dense matrix 121 and is electrically connected to the electrode 123, and is used to heat the atomized aerosol generation matrix; specifically, the heating film 122 (i.e., the heating element 126) is arranged in the micropore array area 1218 of the atomization surface. Among them, the blank area 1219 of the liquid absorption surface is used to cooperate with the seal 18, and the blank area 1219 of the liquid absorption surface is at least partially covered by the seal 18. That is to say, the sealing member 18 is disposed on the liquid absorbing surface of the dense matrix 121 and covers at least a portion of the blank area 1219 of the liquid absorbing surface.

[0092] By providing the micropore array area 1218 and the blank area 1219 adjacent to the micropore array area 1218 on the dense matrix 121, it can be understood that the first micropores 1213 are not provided on the blank area 1219, and the number of the first micropores 1213 on the dense matrix 121 is reduced, 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. In addition, the blank area 1219 on the liquid absorption surface of the dense matrix 121 cooperates with the sealing member 18, and the sealing member 18 prevents the dense matrix 121 in the heating element 12 from breaking while achieving sealing.

[0093] In one embodiment, the blank area 1219 is arranged around the microporous array area 1218. The microporous array area 1218 in the dense matrix 121 serves as an atomization area, covering the heating film 122 and the surrounding area of ​​the heating film 122, that is, basically covering the area reaching the temperature of the atomized aerosol generation matrix, making full use of the thermal efficiency. The heating element 12 is divided into different functional areas (the microporous array area 12218 and the blank area 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.

[0094] Specifically, the blank area 1219 includes two first sub-blank areas 1219a and two second sub-blank areas 1219b, the two first sub-blank areas 1219a are respectively located on opposite sides of the micropore array area 1218 along the first direction, and the two second sub-blank areas 1219b are respectively located on opposite sides of the micropore array area 1218 along the second direction, and the second direction is perpendicular to the first direction. The width of the first sub-blank area 1219a is greater than the width of the second sub-blank area 1219b. The width of the first sub-blank area is 2.1mm-2.6mm; the width of the second sub-blank area 1219b is greater than or equal to 0.5mm. It can be understood that the size of the area around the micropore array area 1218 of the dense matrix 121 in the present application is larger than the aperture of the first micropore 1213, and it can be called a blank area; that is, the blank area 1219 in the present application is the area where the first micropore 1213 can be formed but not formed, rather than the area around the micropore array area 1218 where the first micropore 1213 cannot be formed. In one embodiment, the spacing between the first micropore 1213 closest to the edge of the dense matrix 121 and the edge of the dense matrix 121 is larger than the aperture of the first micropore 1213, and it is considered that the blank area 1219 is provided in the circumferential direction of the micropore array area 1218.

[0095] In one embodiment, the dense matrix 121 is in the shape of a rectangular plate, and the plurality of first micropores 1213 in the micropore array area 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 matrix 121 can be designed as required, the arrangement of the plurality of first micropores 1213 in the micropore array area 1218 can be designed as required, and the setting method and size of the blank area 1219 can be designed as required, and the present application does not limit the above.

[0096] In one embodiment, the electrode 123 is arranged in the first sub-blank area 1219a to ensure the continuity and stability of the electrode 123, and the electrode 123 arranged on the atomization surface of the dense matrix 121 has a sufficiently large contact area with the conductive member 17 to ensure the stability of the electrical connection between the conductive member 17 and the electrode 123 of the heating element 12. It can be understood that the width of the first sub-blank area 1219a is set to 2.1mm-2.6mm, which is convenient for arranging 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 abutment of the ejector pin and the atomization seat 11. Therefore, the width of the first sub-blank area 1219a is set to 2.1mm-2.6mm, which can ensure that the first sub-blank area 1219a can withstand sufficient clamping stress, and the width of the atomizer 1 is not too large due to the excessive length of the heating element 12. The electrode 123 is at least partially disposed in the first sub-blank area 1219a (i.e., the electrode 123 is partially disposed in the blank area and partially disposed in the micropore array area 1218) so as to be able to achieve electrical connection with the conductive component 17; preferably, the electrode 123 is entirely disposed in the first sub-blank area 1219a, thereby reducing the assembly accuracy requirement between the electrode 123 and the conductive component 17.

[0097] It can be understood that the seal 18 is an annular structure (see Figure 8 and Figure 9a ), the seal 18 has a certain width, and the width of the second sub-blank area 1219b is set to be greater than or equal to 0.5 mm in order to enable the blank area 1219 to cooperate with the seal 18, thereby achieving that the blank area 1219 of the liquid absorption surface is at least partially covered by the seal 18.

[0098] See also Figure 8 and Figure 9a , Figure 8 yes Figure 2 The partial structural diagram of the atomization component provided, Figure 9a yes Figure 8 Schematic diagram of the structure in another direction.

[0099] See also Figure 2, the atomizer top seat 111 has a receiving groove 1111, the heating element 12 is arranged in the receiving groove 1111, and the sealing member 18 is at least partially arranged between the bottom wall of the receiving groove 1111 and the liquid absorption surface of the heating element 12. The lower liquid channel 114 on the atomizer top seat 111 is connected to the receiving groove 1111 so that the aerosol generating matrix enters the heating element 12. The heating element 12 and the sealing member 18 are arranged in the receiving groove 1111. Among them, the bottom wall of the receiving groove 1111 forms a supporting portion (not shown). That is, the atomizer top seat 111 has a supporting portion, that is, the atomizer seat 11 has a supporting portion.

[0100] Specifically, the atomizing top seat 111 and the atomizing base 112 clamp the heating element 12 from both sides of the liquid absorption 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 seat 111; that is, the sealing member 18 is clamped between the blank area of ​​the heating element and the atomizing base 11.

[0101] The atomizer assembly 1 also includes a support member 120, which is disposed on a side of the heating element 12 away from the liquid storage chamber 13. The support member 120 is fixed to the atomizer base 112. The support member 120 cooperates with the abutting portion to clamp the heating element 12; specifically, the support member 120 and the abutting portion clamp the sheet substrate 125 from opposite sides of the sheet substrate 125 of the heating element 12 along its thickness direction. The two electrodes 123 of the heating element 12 are disposed on the surface of the sheet substrate 125 close to the support member 120. The sealing member 18 is at least partially located between the heating element 12 and the abutting 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 seal 18 is entirely located on the surface of the heating element 12 close to the abutting portion; or, the seal 18 is partially located on the surface of the heating element 12 close to the abutting portion, and partially located on the side of the heating element 12; or, the seal 18 is partially located on the surface of the heating element 12 close to the abutting portion, partially located on the side of the heating element 12, and partially located on the surface of the heating element 12 away from the abutting portion, and the specific design is based on needs.

[0102] The arrangement of the support member 120 , the sealing member 18 and the atomizer seat 11 protects the sheet-shaped heating element 12 , and is referred to as a protective structure of the heating element 12 .

[0103] In another embodiment, it is not necessary to provide the receiving groove 1111 on the atomizer top seat 111, so that the bottom wall of the receiving groove 1111 can be used as the abutting portion, and the abutting portion can be formed by other structures of the atomizer seat 11, so that the abutting portion and the support member 120 can cooperate to clamp the heating element 12. In another embodiment, the end surface of the wall of the liquid storage chamber 13 close to the heating element 12 abuts against the sealing member 18, and the end surface of the wall of the liquid storage chamber 13 close to the heating element 12 cooperates with the support member 120 to clamp the heating element 12; that is, the end surface of the wall of the liquid storage chamber 13 close to the heating element 12 serves as the abutting portion (such as Figure 9b As shown, Figure 9b 2 is a partial structural diagram of another embodiment of the atomizer assembly provided by the present application). The arrangement of the abutting portion is designed according to the needs, and the present application does not limit this.

[0104] The ends of the heating element 12 can be overlapped on the atomizing top seat 111 and / or the atomizing base 112. The support member 120 is at least partially disposed in the middle position of the heating element 12 (the middle position does not refer to the exact center of the heating element 12, but refers to other positions of the heating element 12 except the edge), rather than the edge of the heating element 12, to further fix the heating element 12. This is because the sheet heating element 12 is relatively weak. If the edge of the heating element 12 is clamped, there are too many suspended parts in the middle of the heating element 12, and the risk of rupture is relatively high. In a specific embodiment, the support 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 in the middle position of the heating element 12.

[0105] The seal 18 at least covers the area of ​​the support 120 corresponding to the heating element 12. The seal 18 is provided with a liquid inlet 181, so that the heating element 12 is at least partially exposed, that is, at least part of the plurality of first micropores 1213 are exposed, so as to be in fluid communication with the liquid storage chamber 13; that is, the liquid absorption surface of the heating element 12 is at least partially exposed from the liquid inlet 181 of the seal 18 to absorb the aerosol to generate the 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.

[0106] The liquid inlet 181 on the sealing member 18 connects the lower liquid channel 114 on the atomizing top seat 111 with the first micropore 1213 on the dense matrix 121; the lower liquid channel 114 connects the liquid inlet 181 with the liquid storage chamber 13, and the aerosol generating matrix in the liquid storage chamber 13 enters the heating element 12 through the lower liquid channel 114 and the liquid inlet 181. In other words, the liquid absorption 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 cooperates with the atomizing base 112 to form the atomizing chamber 115. Specifically, the atomizing surface of the heating element 12 cooperates with the atomizing base 112 to form the atomizing chamber 115.

[0107] It can be understood that in other embodiments, the liquid inlet 181 on the seal 18 enables direct fluid communication between the heating element 12 and the liquid storage chamber 13; that is, there is no need to set up a lower liquid 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.

[0108] The heating element 12 is fixed by the cooperation of the support member 120 and the atomizer seat 11; that is, the support member 120 and the atomizer seat 11 clamp the heating element 12 to fix the heating element 12. Since the material of the dense matrix 121 in the heating element 12 is glass or dense ceramic, the clamping force for fixing the heating element 12 is too large, which may easily cause the heating element 12 to break, which is not conducive to the application of the heating element 12 in the product. In order to solve this problem, the sealing member 18 at least covers the area of ​​the heating element 12 corresponding to the support member 120. The sealing member 18 can act as a buffer while achieving sealing, and can offset the excessive pressure of the support member 120, thereby preventing the heating element 12 from breaking.

[0109] 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 are provided with second micropores 1221 corresponding to the plurality of first micropores 1213. Even if the entire surface of the dense matrix 121 is provided with first micropores 1213, by making the sealing member 18 at least cover the area of ​​the heating element 12 corresponding to the supporting member 120, the sealing member 18 can buffer the force applied to the heating element 12 by the supporting member 120, and can still be applied to the product.

[0110] In another embodiment, the dense matrix 121 in the heating element 12 has a plurality of first micropores 1213 arranged in an array on only a portion of its surface. That is, the dense matrix 121 is provided with a micropore array area 1218 and a blank area 1219 arranged around the micropore array area 1218; a plurality of first micropores 1213 are arranged in the micropore array area 1218, and the blank area 1219 is not provided with the first micropores 1213. The electrode 123 is at least partially arranged in the blank area 1219 of the atomization surface, the heating film 122 is arranged in the micropore array area 1218 of the atomization surface; and the sealing member 18 is arranged in the blank area 1219 of the liquid absorption surface. It can be understood that since the support member 120 is arranged on the side of the heating element 12 away from the sealing member 18, that is, the support member 120 is arranged on the atomization surface; the heating film 122 is arranged in the microporous array area 1218 of the atomization surface, in order to avoid the influence of the support member 120 on the atomization efficiency and taste, the support member 120 is arranged in the blank area of ​​the atomization surface, and the corresponding sealing member 18 is arranged in the blank area 1219 of the liquid absorption surface, and at least covers the area corresponding to the support member 120. Preferably, the sealing member 18 completely covers the blank area 1219 of the liquid absorption surface, thereby simplifying the production process of the sealing member 18 and facilitating assembly; at this time, the liquid inlet 181 on the sealing member 18 completely exposes the microporous array area 1218 of the liquid absorption surface. Without considering the atomization efficiency and taste, the sealing member 18 can also be arranged in the blank area 1219 and the microporous array area 1218 at the same time (the heating element 12 can still atomize the aerosol generation matrix), which can prevent the heating element 12 from breaking. Among them, the electrode 123 can be partially set in the blank area 1219 and partially set in the micropore array area 1218; the electrode 123 can also be completely set in the blank area 1219, so as to achieve stable electrical connection between the electrode 123 and the heating film 122, and the electrode 123 and the conductive part 17. The specific setting method of the electrode 123 can be designed according to needs.

[0111] See also Figure 9a, the surface of the sealing member 18 away from the liquid storage chamber 13 has two positioning parts 182; the two positioning parts 182 are arranged oppositely and at intervals; the heating element 12 is arranged between the two positioning parts 182. The two positioning parts 182 limit the heating element 12 to prevent the heating element 12 from shaking. In this embodiment, the surface of the sealing member 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 part 182 is in the shape of a long strip, one is arranged on the first side, and the other is arranged on the second side; the distance between the first end of the positioning part 182 and the third side is greater than or equal to zero, the distance between the second end of the positioning part 182 and the fourth side is greater than or equal to zero, and the distance between the first end of the positioning part 182 and the third side is the same as the distance between the second end of the positioning part 182 and the fourth side. The specific setting method of the positioning part 182 can be designed according to needs, and it is sufficient to limit the heating element 12.

[0112] See also Figure 2 , Figure 8 and Figure 9a The conducting member 17 is a pin, one end of which is in contact with the electrode of the heating element 12 , and the other end of which is used to be electrically connected to the power supply assembly 2 .

[0113] In one embodiment, the support member 120 includes two conductive support members, and the two conductive support members are respectively abutted against the two electrodes 123. The two conductive support members are two ejectors, and are rigidly fixed on the atomizer seat 11. That is, the ejectors are also used as the support member 120. The seal 18 at least covers the area of ​​the liquid absorption surface of the heating element 12 corresponding to the ejectors. Specifically, the atomizer top seat 111 has a receiving groove 1111, and the heating element 12 is arranged in the receiving groove 1111. The seal 18 is arranged between the bottom wall of the receiving groove 1111 and the liquid absorption surface of the heating element 12, and the ejectors cooperate with the atomizer top seat 111 to clamp the heating element 12, so as to fix the heating element 12.

[0114] See also Fig.10 , Fig.10 It is a partial structural schematic diagram of another embodiment of the atomization assembly provided in the present application.

[0115] Fig.10 The structure of the atomizing assembly 1 provided is Figure 2 The structures of the provided atomizer assemblies 1 are substantially the same, except that the arrangements of the conducting member 17 and the supporting member 120 are different.

[0116] In another embodiment, the conducting member 17 is a spring sheet or a spring needle, which is fixed on the atomizing base 112. The atomizing base 112 abuts against the atomizing surface of the heating element 12, and the atomizing base 112 also serves as a support member 120. Optionally, the atomizing base 112 abuts against the blank area 1219 of the atomizing surface of the heating element 12 to facilitate atomization efficiency and taste. Specifically, the atomizing base 112 includes a main body and a support column disposed on the main body, and the support column abuts against the atomizing surface of the heating element 12 (such as Fig.10 or, the atomizing base 112 includes a main body and a hollow boss disposed on the main body, the hollow boss abuts against the atomizing surface of the heating element 12; the specific structure of the atomizing base 112 can be designed as needed, and can cooperate with the atomizing top seat 111 to clamp and fix the heating element 12.

[0117] See also Fig.11 , Fig.11 It is a partial structural schematic diagram of another embodiment of the atomization assembly provided in the present application.

[0118] Fig.11 The structure of the atomizing assembly 1 provided is Figure 2 The structures of the provided atomizer assemblies 1 are substantially the same, except that the arrangements of the conducting member 17 and the supporting member 120 are different.

[0119] In another embodiment, the conducting member 17 is a spring or a spring needle, which is fixed on the atomizing base 112. The support member 120 is an annular structure independent of the atomizing base 11, and one surface of the support member 120 abuts against the atomizing surface of the heating element 12. Optionally, the support member 120 abuts against the blank area 1219 of the atomizing 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 atomizing top seat 111 by snap connection or is supported by the atomizing base 112 and arranged in the receiving groove 1111 of the atomizing top seat 111. During the assembly process, the sealing member 18 and the heating element 12 are first arranged in the receiving groove 1111 of the atomizing top seat 111 in sequence, and then the support member 120 is snap-connected with the receiving groove 1111 or is arranged in the receiving groove 1111 through the atomizing base 112; the heating element 12 is clamped and fixed by the support member 120 and the atomizing top seat 111.

[0120] See also Fig.12 , Fig.12 yes Figure 3 Schematic diagram of the local structure provided.

[0121] Normally, the material of the atomizer seat 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 can easily enter the liquid storage chamber 13 through the multiple first micropores 1213 on the heating element 12, that is, bubbles will flow back from the atomization surface of the heating element 12 through the first micropores 1213, and the bubbles are easy to adhere to the silicone part to form large bubbles, that is, the refluxed bubbles are easy to adhere to the side of the liquid inlet 181 of the seal 18 (around the liquid absorption surface of the heating element 12) to form large bubbles, affecting the liquid, resulting in poor liquid flow. Since bubbles are relatively difficult to adhere to the atomizer seat 11 (plastic part), reducing the thickness of the liquid inlet 181 of the seal 18 (silicone part) can reduce the impact of the refluxed bubbles on the liquid. In order to solve this problem, the side of the liquid inlet 181 can be made to have a lyophilic structure. The lyophilic structure can improve the hydrophilicity and / or lipophilicity of the side of the liquid inlet 181, so that the side of the liquid inlet 181 has a smaller contact angle and stronger wettability with the aerosol generating substrate. The lyophilic structure is a microstructure formed by modifying the side of the liquid inlet 181. In one embodiment, the lyophilic structure is an isolation layer that is coated on at least part of the side of the liquid inlet 181 to reduce the effect of the backflow bubbles on the lower liquid; wherein the material of the isolation layer has stronger wettability than the material of the sealing member 18, or the contact angle between the material of the isolation layer and the aerosol generating substrate is smaller than the contact angle between the material of the sealing member 18 and the aerosol generating substrate.

[0122] In one embodiment, the isolation layer is a coating or patch disposed on the side of the liquid inlet 181. The isolation layer is made of one of polysiloxane and vinyl acetate, which has better hydrophilicity and / or lipophilicity than silicone and fluororubber.

[0123] In one embodiment, a protrusion 117 is provided on the bottom wall of the receiving groove 1111 of the atomizing top seat 111, that is, the protrusion 117 is arranged on the surface of the supporting portion close to the sealing member 18. The protrusion 117 covers at least part of the side 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 the reflux bubbles on the lower liquid; 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 the reflux bubbles on the lower liquid; 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 the reflux bubbles on the lower liquid. Optionally, the raised portion 117 is integrally formed with the atomizing top seat 111 , fixed by gluing or snapping, and the specific design is determined according to needs.

[0124] When the isolation layer is the raised portion 117 of the atomizer seat 11, and the material of the raised portion 117 is one of plastic, glass and silicon, the raised portion 117 covers at least part of the side surface of the liquid inlet 181, thereby reducing the contact area between the refluxed bubbles and the liquid inlet 181 of the seal 18, thereby minimizing the impact of the refluxed bubbles on the lower liquid. There is a gap between the end surface of the raised portion 117 close to the heating element 12 and the heating element 12, so as to prevent the raised portion 117 of the atomizer top seat 111 from directly pressing on the heating element 12. Figure 8 , the size of the liquid inlet 181 of the sealing member 18 in its extension direction is not uniform. Specifically, the liquid inlet 181 includes a first liquid inlet section and a second liquid inlet section that are interconnected; 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 step structure is formed on the side of the liquid inlet 181. That is, a cutout is provided on the surface of the sealing member 18 away from the heating element 12 and around the liquid inlet 181, so as to form a step structure on the side of the liquid inlet 181. See Fig.12 The end of the protrusion 117 abuts against the connecting surface of the first liquid inlet section and the second liquid inlet section, that is, the end of the protrusion 117 abuts against the bottom surface of the step structure; and the protrusion 117 completely covers the side of the first liquid inlet section.

[0125] Furthermore, the surface of the raised portion 117 away from the lower liquid channel 114 has a rib 1172. The rib 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 impact of the bubbles on the lower liquid. There is a gap between the end surface of the rib 1172 close to the heating element 12 and the heating element 12 to prevent the rib 1172 on the mist raised portion 117 from directly pressing on the heating element 12.

[0126] See also Fig.13 , Fig.13 yes Fig.12 A schematic structural diagram of another embodiment of the middle protrusion cooperating with the liquid inlet of the sealing member.

[0127] In another embodiment, the liquid inlet 181 of the seal 18 has uniform size in its extension direction. The side of the liquid inlet 181 is parallel to the axis of the atomizer assembly 1. The raised portion 117 covers part of the side of the liquid inlet 181, and there is a gap between the end surface of the raised portion 117 close to the heating element 12 and the heating element 12. It can be understood that the more the side of the liquid inlet 181 covered by the raised portion 117, the more it is conducive to reducing the influence of the reflux bubbles on the lower liquid, and it is only necessary to make the raised portion 117 not directly press the force on the heating element 12.

[0128] In order to solve the problem that the reflux bubbles are easy to adhere to the seal 18 (silicone component) and affect the lower liquid, the seal 18 can be set between the side of the heating element 12 and the wall of the receiving cavity 113, so that the liquid absorption surface is completely exposed to the lower liquid channel 114 to achieve sealing. Optionally, the port of the lower liquid channel 114 abuts the liquid absorption surface of the heating element 12; that is, the liquid absorption surface of the heating element 12 is directly fluidically connected to the lower liquid channel 114 without passing through any components. Among them, the material of the atomizer seat 11 has stronger wettability than the material of the seal 18, or the contact angle between the material of the atomizer seat 11 and the aerosol generating matrix is ​​smaller than the contact angle between the material of the seal 18 and the aerosol generating matrix. In one embodiment, the seal 18 is disposed around the side of the heating element 12 and is only disposed between the side of the heating element 12 and the wall of the receiving cavity 113; in another embodiment, the seal 18 is only disposed between the side of the heating element 12 and the 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. In other words, the surface of the heating element 12 close to the liquid storage cavity 13 is not covered by the seal 18, and the reflux bubbles are unlikely to adhere to the seal 18 during the atomization process; at the same time, the port of the liquid lowering channel 114 abuts against the liquid absorbing surface of the heating element 12, and the reflux bubbles do not affect the smoothness of the liquid lowering.

[0129] The following experiments verify the influence of the thickness of the dense matrix 121 and the pore size of the first micropores 1213 provided in the present application on the liquid supply efficiency.

[0130] The liquid supply efficiency of the heating element 12 is evaluated by a wet burning experiment of the heating element 12. A DC power supply is used, and the electrodes 123 of the heating element 12 are respectively connected through the ejector pins 20 of the power supply assembly 2 (the ejector pins 20 are electrically connected to the battery), and the power and power-on time are controlled. The temperature of the heating film 122 is measured by an infrared thermal imager or a thermocouple.

[0131] When the heating film 122 is powered on, the temperature rises instantly, causing the aerosol generating matrix in the first micropores 1213 to vaporize. As the aerosol generating matrix in the first micropores 1213 is consumed, the capillary action of the first micropores 1213 causes the aerosol generating matrix in the liquid storage chamber 13 to be continuously replenished to the heating film 122 .

[0132] The flow of the aerosol-generating substrate in the first micropore 1213 with capillary action can be calculated according to the Washburn equation, where S is the hole area of ​​the first micropore 1213, ρ is the density of the aerosol-generating substrate, z is the distance traveled by the aerosol-generating substrate, γ is the surface tension, μ is the viscosity of the aerosol-generating substrate, r is the radius of the first micropore 1213, and θ is the contact angle of the aerosol-generating substrate to the material of the dense base 121. The atomization amount of the aerosol-generating substrate is as follows:

[0133]

[0134] It can be seen from the formula that after determining the materials of the aerosol generating matrix and the dense matrix 121, ρ, γ, μ, and θ remain unchanged. The larger the aperture of the first micropore 1213, the more sufficient the liquid supply, but the risk of leakage due to aviation negative pressure during transportation and warm shock during use will also be greater. Therefore, the thickness, aperture, and thickness-to-diameter ratio of the dense matrix 121 are very important, both to ensure sufficient liquid supply during the atomization process and to prevent leakage of the aerosol generating matrix.

[0135] The heating element 12 was installed and tested to evaluate the relationship between the thickness of the dense matrix 121 / the aperture of the first micropore 1213 and the amount of atomization. The results are as follows: Fig.14 As shown ( Fig.14 is a relationship diagram between the thickness of the dense matrix / the first micropore diameter and the atomization amount of the heating element provided by the present application). Fig.14 It can be seen that when the thickness of the dense matrix 121 / the aperture of the first micropore 1213 is too large, the aerosol-generating matrix supplied by capillary action is difficult to meet the atomization demand, and the atomization amount decreases. When the thickness of the dense matrix 121 / the aperture of the first micropore 1213 is too small, the aerosol-generating matrix is ​​easy to flow out of the first micropore 1213 to the surface of the heating film 122, resulting in a decrease in atomization efficiency and a decrease in atomization amount.

[0136] The above descriptions are only some embodiments of the present application, and are not intended to limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An atomizing assembly, characterized in that: include: A liquid storage chamber, used for storing a liquid aerosol-generating matrix; Atomizer seat; The atomizing seat has a lower liquid channel and a supporting portion; A heating element, arranged on the atomizing seat; The heating element comprises a sheet-like substrate and a heating element; A sealing member, used for sealing the periphery of the heating element; the sealing member is provided with a liquid inlet; the liquid inlet exposes at least part of the heating element so as to be in fluid communication with the liquid storage chamber; the sealing member is clamped between the heating element and the abutting portion, and the liquid inlet is in communication with the liquid storage chamber through the lower liquid channel; Wherein, the side of the liquid inlet has a lyophilic structure; the lyophilic structure is a microstructure formed by modifying the side of the liquid inlet; or, the lyophilic structure is an isolation layer that covers at least part of the side of the liquid inlet; wherein, the material of the isolation layer has stronger wettability than the material of the sealing element, or the contact angle between the material of the isolation layer and the aerosol generating substrate is smaller than the contact angle between the material of the sealing element and the aerosol generating substrate.

2. The atomizer assembly according to claim 1, characterized in that: The isolation layer is a coating or a patch arranged on the side of the liquid inlet.

3. The atomizer assembly according to claim 2, characterized in that: The material of the isolation layer is one of polysiloxane and vinyl acetate; the material of the sealing element is silicone or fluororubber.

4. The atomizer assembly according to claim 1, characterized in that: The isolation layer is a raised portion of the atomizer seat.

5. The atomizing assembly according to claim 4, characterized in that: The surface of the protrusion is provided with a coating, and the material of the coating is one of polysiloxane and vinyl acetate; the material of the sealing element is silicone or fluororubber.

6. The atomizing assembly according to claim 4, characterized in that: The material of the protrusion is one of plastic, glass and silicon; the material of the sealing element is silicone or fluororubber.

7. The atomizer assembly according to claim 6, characterized in that: The protrusion is integrally formed with the atomizer seat and fixed by gluing or snapping.

8. The atomizer assembly according to claim 4, characterized in that: There is a gap between the end surface of the protrusion close to the heating element and the heating element.

9. The atomizer assembly according to claim 4, characterized in that: The protrusion is arranged on a surface of the abutting portion close to the sealing element.

10. The atomizer assembly according to claim 9, characterized in that: The liquid inlet includes a first liquid inlet section and a second liquid inlet section which are interconnected; the first liquid inlet section is located on a side of the second liquid inlet section away from the heating element, and the size of the first liquid inlet section is larger than that of the second liquid inlet section; the end of the raised portion abuts against the connecting surface of the first liquid inlet section and the second liquid inlet section, and the raised portion covers the side surface of the first liquid inlet section.

11. The atomizer assembly according to claim 10, characterized in that: The end of the protrusion away from the lower liquid channel has a surrounding bone; the surrounding bone covers at least part of the side surface of the second liquid inlet section, and there is a gap between the end surface of the surrounding bone and the heating element.

12. The atomizer assembly according to claim 1, characterized in that: The atomizer seat comprises an atomizer top seat and an atomizer base, the atomizer top seat is provided with a receiving groove and the lower liquid channel; the lower liquid channel is connected with the receiving groove; the bottom wall of the receiving groove forms the abutting part; the heating element and the sealing member are arranged in the receiving groove.

13. The atomizer assembly according to claim 1, characterized in that: The sheet-like substrate is in the shape of a flat plate; the heating element is arranged on the surface of the sheet-like substrate.

14. The atomizer assembly according to claim 13, characterized in that: The sheet-like substrate is a glass sheet with a thickness of less than or equal to 1 mm; or the sheet-like substrate is a porous ceramic sheet with a thickness of less than or equal to 2 mm.

15. The atomizer assembly according to claim 13, characterized in that: The sheet-like substrate is a dense substrate, which includes an atomizing surface and a liquid absorption surface opposite to the atomizing surface; a plurality of first micropores are arranged on the dense substrate, and the first micropores are through holes that penetrate the atomizing surface and the liquid absorption surface, and the first micropores are used to guide the aerosol generating matrix to the atomizing surface; the heating element is arranged on the atomizing surface.

16. The atomizer assembly according to claim 15, characterized in that: The dense matrix is ​​provided with a micropore array area and a blank area arranged around the micropore array area; the micropore array area has a plurality of the first micropores; and the sealing member covers the blank area of ​​the liquid absorption surface.

17. The atomizer assembly according to claim 16, characterized in that: The liquid inlet of the sealing member completely exposes the microwell array area.

18. The atomizer assembly according to claim 1, characterized in that: The surface of the sealing member away from the liquid storage cavity has two positioning parts; the two positioning parts are arranged opposite to each other and at intervals; the heating element is arranged between the two positioning parts.

19. An electronic atomization device, characterized in that: It comprises an atomization assembly and a power supply assembly, wherein the atomization assembly is the atomization assembly described in any one of claims 1 to 18, and the power supply assembly controls the operation of the atomization assembly.

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