Heating element assembly, atomizer and electronic atomization device

Abstract

The present application discloses a heating element assembly, an atomizer and an electronic atomization device, wherein the heating element assembly comprises a heating element and a fixed base; a first connecting hole is arranged on the fixed base; the heating element comprises a sheet-like base; the heating element is arranged on the fixed base, and the heating element and the fixed base form an integral structure; the heating element is at least partially exposed through the first connecting hole. Through the above arrangement, the heating element and the fixed base are assembled together in the atomizer, avoiding the problem that the thin heating element is easy to break during transportation or assembly.

Description

Technical Field

[0001] The present application relates to the technical field of atomizers, and in particular to a heating element assembly, an atomizer 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 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, such as a sheet-like microporous array glass heating element, but this thin heating element is easy to break. Summary of the invention

[0005] In view of this, the present application provides a heating element assembly, an atomizer and an electronic atomization device to solve the technical problem in the prior art that thin heating elements are prone to breakage.

[0006] In order to solve the above technical problems, the first technical solution provided in the present application is: providing a heating element assembly, comprising a fixed base and a heating element; a first connecting hole is provided on the fixed base; the heating element comprises a sheet-like base; the heating element is provided on the fixed base, and the heating element and the fixed base form an integral structure; the heating element is at least partially exposed through the first connecting hole.

[0007] Wherein, the fixed base includes a first surface and a second surface which are arranged opposite to each other; the heating element is attached to the first surface of the fixed base and spans the first connecting hole.

[0008] Wherein, the fixed base includes a first surface and a second surface arranged opposite to each other; the first surface of the fixed base has a mounting groove, and the first connecting hole is connected to the mounting groove from the bottom wall of the mounting groove; the heating element is at least partially embedded in the mounting groove and spans the first connecting hole.

[0009] The surface of the sheet-like base body close to the bottom wall of the mounting groove is at least partially exposed through the first connecting hole; the surface of the sheet-like base body away from the bottom wall of the mounting groove is flush with the first surface of the fixing base.

[0010] Wherein, the heating element is embedded in the fixed base and spans the first connecting hole.

[0011] Wherein, the fixed base wraps the entire edge of the heating element.

[0012] Wherein, the fixed base and the heating element are formed into an integral structure by in-mold injection molding.

[0013] Wherein, the fixed base includes a first seat body and a second seat body, the first seat body and the second seat body cooperate to form the first connecting hole and the installation cavity, and the heating element is arranged in the installation cavity; the connecting surfaces of the first seat body and the second seat body are ultrasonically welded or laser welded to form an integrated structure between the heating element and the fixed base.

[0014] Wherein, the sheet-like substrate is a dense substrate 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.

[0015] Wherein, the sheet-like substrate includes a liquid absorbing surface and an atomizing surface opposite to the liquid absorbing surface, and the heating body also includes a heating element arranged on the atomizing surface.

[0016] Wherein, the heating body further includes an electrode, the electrode is arranged on the atomized surface of the sheet-like substrate, and the electrode is electrically connected to the heating element; the heating element and the electrode are exposed through the first connecting hole.

[0017] Wherein, the sheet-like substrate is the dense substrate; a plurality of first micropores are arranged on the sheet-like substrate, and the first micropores are through holes penetrating the liquid absorption surface and the atomization surface.

[0018] The sheet-like substrate 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 first connecting holes completely expose the micropore array area.

[0019] Wherein, the material of the fixing base is silicone or fluororubber.

[0020] Wherein, the material of the fixing base is plastic.

[0021] Wherein, the heating element assembly also includes a seal, the seal material is silicone or fluororubber; the seal is arranged on the surface of the fixed base; a second connecting hole is arranged in the middle of the seal, and the second connecting hole is connected to the first connecting hole.

[0022] The heating element is attached to the first surface of the fixed base or the heating element is arranged in a mounting groove on the first surface of the fixed base, and the sealing member is arranged on the second surface of the fixed base.

[0023] Wherein, the sealing element is fixedly connected to the fixed base through a rubber encapsulation process.

[0024] Among them, one of the fixed base and the sealing member is provided with a positioning hole, and the other is provided with a positioning column; the positioning column is arranged corresponding to the positioning hole; the fixed base and the sealing member are assembled through the positioning column and the positioning hole.

[0025] Wherein, the surface of the fixed base is provided with an annular convex rib, and the annular convex rib is arranged around the first connecting hole; the sealing member is sleeved on the outer side of the annular convex rib.

[0026] Wherein, the distance between the surface of the sealing member away from the heating element and the heating element is greater than the distance between the top surface of the annular convex rib and the heating element, and the inner surface of the annular convex rib is flush with the inner surface of the first connecting hole.

[0027] Wherein, at least one protrusion is arranged on the hole wall of the first connecting hole and / or the second connecting hole, and the protrusion extends toward the direction of the internal space of the first connecting hole and / or the second connecting hole; the protrusion cooperates with the hole wall of the first connecting hole and / or the second connecting hole to form a microgroove, or microgrooves are formed between multiple protrusions; the capillary force of the heating element is greater than the capillary force of the microgroove; and there is a gap between the protrusion and the heating element.

[0028] Wherein, the gap between the protrusion and the heating element is 0.2mm-1.0mm.

[0029] Wherein, the protrusion cooperates with the hole wall of the first connecting hole and / or the second connecting hole to form a continuous micro groove; the heating body also includes a heating element, and the shape of the micro groove is the same as that of the heating element and is correspondingly arranged.

[0030] Wherein, a ventilation groove is provided on the surface of the fixed base, one end of the ventilation groove is connected to the first connecting hole, and the other end extends to the edge of the fixed base; the ventilation groove is used to ventilate the liquid storage cavity.

[0031] In order to solve the above technical problems, the second technical solution provided in the present application is: to provide a nebulizer, including a liquid storage chamber and a heating element assembly; the liquid storage chamber is used to store the liquid aerosol generating matrix, and the heating element assembly is used to atomize the aerosol generating matrix; the heating element assembly is the heating element assembly described in any one of the above items.

[0032] In order to solve the above technical problems, the third technical solution provided in the present application is: to provide an electronic atomization device, including an atomizer and a host, the atomizer is the atomizer described above, and the host controls the operation of the atomizer.

[0033] Beneficial effects of the present application: Different from the prior art, the heating element assembly of the present application includes a heating element and a fixed base; a first connecting hole is provided on the fixed base; the heating element includes a sheet-like base; the heating element is provided on the fixed base, and the heating element and the fixed base form an integral structure; the heating element is at least partially exposed through the first connecting hole. Through the above arrangement, the heating element is assembled together with the fixed base in the atomizer, avoiding the problem that the thin heating element is easily broken during transportation or assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 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.

[0035] Figure 1 It is a schematic diagram of the structure of the electronic atomization device provided by the present application;

[0036] Figure 2 It is a structural schematic diagram of the atomizer provided by the present application;

[0037] Figure 3 It is a structural schematic diagram of the first embodiment of the heating element assembly in the atomizer provided by the present application;

[0038] Figure 4 yes Figure 3 A cross-sectional schematic diagram of a heating element assembly is provided;

[0039] Figure 5 yes Figure 3 Schematic diagram of the structure of the heating element;

[0040] Figure 6 yes Figure 5 Schematic diagram of the structure of the middle sheet matrix;

[0041] Figure 7 It is a structural schematic diagram of a second embodiment of a heating element assembly in an atomizer provided by the present application;

[0042] Figure 8 It is a structural schematic diagram of a third embodiment of a heating element assembly in an atomizer provided by the present application;

[0043] Fig. 9It is a structural schematic diagram of a fourth embodiment of a heating element assembly in an atomizer provided by the present application;

[0044] Fig.10 yes Fig. 9 A cross-sectional schematic diagram of a heating element assembly is provided;

[0045] Fig.11 It is a structural schematic diagram of a fifth embodiment of a heating element assembly in an atomizer provided by the present application;

[0046] Fig.12 yes Fig.11 A cross-sectional schematic diagram of a heating element assembly is provided;

[0047] Fig.13 It is a structural schematic diagram of the sixth embodiment of the heating element assembly in the atomizer provided by 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] The inventor of the present application has found that one of the reasons why glass heating elements cannot be commercialized at present is that when the thickness of the glass heating element is relatively thin, it is easy to break during transportation or assembly. In order to improve the strength of the glass heating element, the thickness of the glass heating element can be increased, but the increase in thickness will affect the liquid supply speed, which is easy to cause dry burning and low aroma restoration. To this end, the present application provides a heating element assembly 20 that directly integrates the heating element 12 with a fixed base 21, as well as an atomizer 1 and an electronic atomization device using the heating element assembly 20.

[0052] See also Figure 1 , Figure 1 It is a schematic diagram of the structure of the electronic atomization device provided in this application.

[0053] The electronic atomization device can be used for atomization of liquid substrates. The electronic atomization device includes an atomizer 1 and a host 2 that are connected to each other. The atomizer 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 atomizer 1 can be specifically used in different fields, such as medical treatment, electronic aerosolization, etc. The host 2 includes a battery (not shown), an airflow sensor (not shown), and a controller (not shown), etc.; the battery is used to power the atomizer 1 so that the atomizer 1 can atomize the 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 atomizer 1 works according to the airflow changes detected by the airflow sensor. The atomizer 1 and the host 2 can be set as an integral unit or can be detachably connected, and are designed according to specific needs.

[0054] See also Figure 2-Figure 6 , Figure 2 is a schematic diagram of the structure of the atomizer provided in this application, Figure 3 is a structural schematic diagram of the first embodiment of the heating element assembly in the atomizer provided by the present application, Figure 4 yes Figure 3 A cross-sectional schematic diagram of a heating element assembly is provided, Figure 5 yes Figure 3 Schematic diagram of the structure of the heating element. Figure 6 yes Figure 5 Schematic diagram of the structure of the platelet matrix.

[0055] The atomizer 1 includes a shell 10, an atomizer seat 11 and a heating element assembly 20. 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 15 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, and 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. The heating element assembly 20 is arranged in the receiving chamber 113, and is arranged in the receiving chamber 16 together with the atomizer seat 11.

[0056] 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. 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 communicated with the liquid storage chamber 13, and the other end is communicated with the receiving chamber 113, so that the aerosol generating matrix in the liquid storage chamber 13 enters the heating element assembly 20 through the lower liquid channel 114.

[0057] Among them, the heating element assembly 20 is used to atomize the aerosol generating matrix to generate an aerosol. The heating element assembly 20 includes a heating element 12 and a fixed base 21. In the present embodiment, an atomizing chamber 115 is formed between the surface of the heating element 12 away from the liquid storage chamber 13 and the inner wall surface of the receiving chamber 113, and the atomizing chamber 115 is connected to the air outlet channel 14. An air inlet 116 is provided on the atomizing base 112 to connect the outside world with the atomizing chamber 115. External gas enters the atomizing chamber 115 through the air inlet 116, carries the aerosol atomized by the heating element 12 in the heating element assembly 20 into the air outlet channel 14, and finally reaches the suction port 15 to be inhaled by the user.

[0058] Specifically, a first communication hole 211 is provided on the fixed base 21 ; the heating element 12 is provided on the fixed base 21 , and the heating element 12 and the fixed base 21 form an integral structure; the heating element 12 is at least partially exposed through the first communication hole 211 .

[0059] See also Figure 5 and Figure 6The heating body 12 includes a sheet substrate 121 and a heating element 122. The heating element 122 is arranged on the sheet substrate 121. The sheet substrate 121 can be a sheet-like dense substrate with a thickness less than or equal to 1 mm, for example, the sheet-like dense substrate is a sheet of glass; the sheet substrate 121 can also be a sheet-like porous ceramic sheet substrate with a thickness less than or equal to 2 mm. The heating element 122 can be a heating sheet, a heating film, a heating net, etc., which can be arranged on the surface of the sheet substrate 121 or buried inside the sheet substrate 121, and is specifically designed according to needs. In some embodiments, the sheet substrate 121 itself can generate heat, such as a self-heating ceramic heating body, in which case there is no need to set up a heating element 122 separately.

[0060] The sheet-like shape of the sheet-like substrate 121 is relative to the block-like body, and the ratio of the length to the thickness of the sheet-like substrate 121 is greater than that of the block-like body. In this embodiment, the sheet-like substrate 121 is in the shape of a flat plate.

[0061] The sheet substrate 121 includes a liquid absorption surface and an atomization surface opposite to each other. In this embodiment, the heating element 122 is disposed on the atomization surface. The sheet substrate 121 may be a dense substrate with a thickness of 1 mm or less; or the sheet substrate 121 may be a porous ceramic sheet with a thickness of 2 mm or less. The atomization surface and the inner wall surface of the receiving cavity 113 form an atomization cavity 115.

[0062] The inventor of the present application has found that the sheet-like substrate 121, whether it is a dense substrate or a porous substrate, is very easy to break during transportation or assembly due to its small thickness and low mechanical strength, making it inconvenient to assemble the atomizer 1 using the heating element 12 and the cost is high. For this reason, the present application prepares the heating element 12 and the fixed base 21 to form an integrated structure to increase the tolerance of the heating element 12; at the same time, the heating element 12 and the fixed base 21 are assembled together in the atomizer 1 to avoid the thin heating element 12 from being easily broken during transportation or assembly, so that the heating element 12 can be used in commercial products.

[0063] The "integrated structure" in the present application means that the heating element 12 and the fixed base 21 form an inseparable integral structure or cannot be restored to the state before separation by simply assembling them together after separation. For example, the heating element 12 is buried inside the fixed base 21, and the heating element 12 cannot be taken out from the fixed base 21 without destroying the fixed base 21. For another example, the heating element 12 is attached to the surface of the fixed base 21 or embedded in the mounting groove of the fixed base 21 by in-mold injection molding (the specific introduction of the arrangement of the heating element 12 on the fixed base 21 is described below). If the heating element 12 is forcibly separated from the fixed base 21, the heating element 12 may break. Therefore, the "integrated structure" in the present application is different from one-piece molding, because the heating element 12 usually needs to be prepared separately and cannot be integrally molded with the fixed base 21. The "integrated structure" in the present application is also different from a detachable connection. Usually, the two elements of a detachable connection are separated and then assembled together to be the same as before the separation; and even if the heating element 12 of the present application is forcibly taken out of the mounting groove of the fixed base 21, and then the heating element 12 is set in the mounting groove of the fixed base 21 after separation, the heating element 12 and the fixed base 21 cannot be restored to an integrated structure, but form a detachable connection.

[0064] The following is a detailed description by taking the example that the sheet-like base 121 in the heating element 12 is a sheet-like dense base with a thickness less than or equal to 1 mm and the heating element 122 in the heating element 12 is a heating film.

[0065] The sheet 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 sheet substrate 121, and the first micropores 1213 are through holes penetrating the first surface 1211 and the second surface 1212. The heating element 122 is formed on the first surface 1211. The surface on which the heating element 122 is provided on the sheet substrate 121 is the atomization surface, that is, the first surface 1211 of the sheet substrate 121 is the atomization surface, and the second surface 1212 of the sheet substrate 121 is the liquid absorption surface. In other words, the sheet substrate 121 includes a liquid absorption surface and an atomization surface opposite to the liquid absorption surface, and the heating element 122 is provided on the atomization surface; the first micropores 1213 are through holes penetrating the liquid absorption surface and the atomization 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 effect.

[0066] The present application provides a plurality of first micropores 1213 with capillary force on the sheet substrate 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 sheet substrate 121 in the heating element 12 is basically consistent, and the thickness of the heating element 122 formed on the sheet substrate 121 is uniform, so that the atomization effect of the electronic atomization devices shipped from the same batch is consistent.

[0067] In one embodiment, the sheet substrate 121 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 first micropores 1213; the first connecting hole 211 completely exposes the micropore array area. It can be understood that the size of the area around the micropore array area of ​​the sheet substrate 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 in the present application is an area where the first micropore 1213 can be formed but not formed, rather than an area around the micropore array area where the first micropore 1213 cannot be formed. The first micropore 1213 is not arranged on the blank area, which reduces the number of the first micropores 1213 on the sheet substrate 121, thereby improving the strength of the sheet substrate 121 in the heating element 12 and reducing the production cost of setting the first micropore 1213 on the sheet substrate 121.

[0068] In this embodiment, the heating element 122 is a heating film, and the heating element 122 is disposed in the micropore array region of the sheet substrate 121 . The heating element 122 is provided with second micropores 1221 corresponding to the first micropores 1213 .

[0069] See also Figure 3 and Figure 4 The fixed base 21 includes a first surface and a second surface that are arranged opposite to each other, and the heating element 12 is fixed on the first surface. The fixed base 21 is provided with a first connecting hole 211, and the first connecting hole 211 exposes at least part of the plurality of first micropores 1213. The aerosol generating matrix in the liquid storage chamber 13 reaches the sheet substrate 121 of the heating element 12 through the lower liquid channel 114 and the first connecting hole 211, 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 sheet substrate 121, so that the aerosol generating matrix is ​​atomized by the heating element 122; that is, the first micropores 1213 are connected to the liquid storage chamber 13 through the first connecting hole 211 and the lower liquid channel 114. Among them, the material of the sheet substrate 121 can be glass or dense ceramic; when the sheet substrate 121 is glass, it can be one of ordinary glass, quartz glass, borosilicate glass, and photosensitive lithium aluminosilicate glass.

[0070] The heating element 12 further includes an electrode 123, which is disposed on the atomizing surface of the sheet substrate 121 and is located in the blank area of ​​the sheet substrate 121. The electrode 123 is electrically connected to the heating element 122; the heating element 122 and the electrode 123 are both exposed through the first connecting hole 211. It can be understood that the heating element 122 is exposed through the first connecting hole 211, and can atomize the aerosol generating matrix to generate aerosol, and release it into the atomizing chamber 115; the electrode 123 is exposed through the first connecting hole 211, and the heating element 122 can be electrically connected to the host 2 without drilling a hole on the fixed base 21.

[0071] Specifically, the heating element 12 and the fixed base 21 can be formed into an integral structure by injection molding in the film, so that the heating element 12 is fixed to the first surface of the fixed base 21. It can be understood that by forming the heating element 12 and the fixed base 21 into an integral structure, the process of fixing the heating element 12 on the fixed base 21 can be simplified, the strength of the heating element 12 can be increased, and it is beneficial to prevent the heating element 12 from breaking; and it is beneficial to standardize the heating element assembly 20 to be suitable for different models of electronic atomization devices; when the heating element assembly 20 is assembled on the atomizer 1, automatic assembly can be realized, which is beneficial to improve the production efficiency.

[0072] In one embodiment, the first surface of the fixed base 21 has a mounting groove 212, the first connecting hole 211 is connected to the mounting groove 212 from the bottom wall of the mounting groove 212, the heating element 12 is at least partially embedded in the mounting groove 212 and straddles the first connecting hole 211; the heating element 12 is fixedly arranged between the mounting groove 212. Further, the surface of the bottom wall of the sheet substrate 121 close to the mounting groove 212 is at least partially exposed through the first connecting hole 211; the surface of the sheet substrate 121 away from the bottom wall of the mounting groove 212 is flush with the first surface of the fixed base 21; that is, the atomized surface of the sheet substrate 121 is flush with the first surface of the fixed base 21 (such as Figure 4 As shown). It can be understood that the atomizing surface of the sheet substrate 121 is flush with the first surface of the fixed base 21, which improves the regularity of the heating element assembly 20 and helps to reduce the assembly error of the heating element assembly 20 on the atomizer 1; the atomizing surface of the sheet substrate 121 and the first surface of the fixed base 21 may not be flush, and the heating element assembly 20 can be assembled on the atomizer 1. The heating element 12 can be fixed to the mounting groove 212 by injection molding.

[0073] In another embodiment, the first surface of the fixed base 21 is a plane, and the heating element 12 is attached to the first surface of the fixed base 21 and spans the first connecting hole 211. The heating element 12 can be fixed to the first surface by injection molding, which is selected according to needs.

[0074] In the first embodiment of the heating element assembly 20, the material of the fixed base 21 is silicone, fluororubber, etc. The fixed base 21 is directly matched with the atomizing top seat 111, and the sealing between the heating element 12 and the lower liquid channel 114 of the atomizing top seat 111 can be achieved, which can reduce the number of components and simplify the assembly process. It can be understood that if the material of the fixed base 21 is a material that cannot be sealed, such as non-silicone, plastic, etc., a special sealing member needs to be provided between the fixed base 21 and the atomizing top seat 111 to seal the lower liquid channel 114 and the heating element 12.

[0075] See also Figure 3, a ventilation groove 213 is provided on the second surface of the fixed base 21, one end of the ventilation groove 213 is connected to the first connecting hole 211, and the other end extends to the edge of the fixed base 21; the ventilation groove 213 is used to ventilate the liquid storage chamber. Specifically, one end of the ventilation groove 213 is connected to the lower liquid channel 114 through the first connecting hole 211; the other end of the ventilation groove 213 extends to the edge of the fixed base 21, and is connected to the atomization chamber 115 or the air inlet 116, so as to realize the ventilation of the liquid storage chamber 13. Two ventilation grooves 213 are provided on the first surface of the fixed base 21, and the two ventilation grooves 213 are arranged on opposite sides of the first connecting hole 211, and one ventilation groove 213 is arranged corresponding to one lower liquid channel 114. Each ventilation groove 213 includes a first sub-ventilation groove 2131 and a second sub-ventilation groove 2132; the first end of the first sub-ventilation groove 2131 extends to the edge of the fixed base 21 and is connected to the atomization chamber 115 or the air inlet 116; the first end of the second sub-ventilation groove 2132 extends to the edge of the fixed base 21 and is connected to the atomization chamber 115 or the air inlet 116; the second end of the first sub-ventilation groove 2131 and the second end of the second sub-ventilation groove 2132 converge and are connected to the first connecting hole 211.

[0076] See also Figure 2 The atomizer 1 further includes a conducting member 17, which is fixed to the atomizing base 112. One end of the conducting member 17 is electrically connected to the electrode 123 of the heating element 12, and the other end is used to be electrically connected to the host 2, so that the heating element 12 can work.

[0077] The atomizer 1 further includes a sealing top cover 19. The sealing top cover 19 is disposed on the surface of the atomizing top seat 111 close to the liquid storage chamber 13, and is used to seal the liquid storage chamber 13, the atomizing top seat 111, and the air outlet channel 14 to prevent liquid leakage. Optionally, the sealing top cover 19 is made of silicone.

[0078] See also Figure 7 , Figure 7 It is a structural schematic diagram of the second embodiment of the heating element assembly in the atomizer provided by the present application.

[0079] Figure 7 The heating element assembly 20 provided is Figure 4 The difference of the provided heating element assembly 20 is that: Figure 4 The heating element 12 is disposed on the first surface of the fixed base 21. Figure 7 The heating element 12 is embedded in the fixed base 21. Figure 7 The structure of the heating element 12 in the heating element assembly 20 provided, the material of the fixing base 21 and Figure 4 The structure of the heating element 12 and the material of the fixing base 21 in the provided heating element assembly 20 are the same and will not be described in detail.

[0080] See also Figure 7 , the heating element 12 is buried in the fixed base 21 and spans the first connecting hole 211. In this embodiment, the fixed base 21 wraps the entire edge of the heating element 12. Specifically, the first connecting hole 211 is divided into a first sub-connecting hole 2111 and a second sub-connecting hole 2112 by the heating element 12; the atomization surface of the heating element 12 is exposed through the first sub-connecting hole 2111, and the liquid absorption surface of the heating element 12 is exposed through the second sub-connecting hole 2112, so as to realize the atomized aerosol generation matrix. Optionally, the fixed base 21 and the heating element 12 can form an integrated structure by in-mold injection molding.

[0081] See also Figure 8 , Figure 8 It is a structural schematic diagram of the third embodiment of the heating element assembly in the atomizer provided by the present application.

[0082] In the third embodiment of the heating element assembly 20 , the structure of the heating element 12 and the material of the fixing base 21 are the same as those in the first embodiment of the heating element assembly 20 , and are not described again.

[0083] In the third embodiment of the heating element assembly 20, the fixed base 21 includes a first base 215 and a second base 216, the first base 215 and the second base 216 cooperate to form a first connecting hole 211 and a mounting cavity 217, and the heating element 12 is arranged in the mounting cavity 217; the connecting surfaces of the first base 215 and the second base 216 are ultrasonically welded or laser welded to form an integral structure of the heating element 12 and the fixed base 21. The first base 215 and the second base 216 can be two upper and lower bases or two left and right bases, which are not limited here.

[0084] Exemplarily, the fixed base 21 includes two upper and lower base bodies, such as Figure 8 As shown, the first seat body 215 and the second seat body 216 cooperate to form an installation cavity 217, and the heating element 12 is arranged in the installation cavity 217. Specifically, a first groove (not shown) is formed on the surface of the first seat body 215 close to the second seat body 216, the surface of the second seat body 216 close to the first seat body 215 is a plane, and the first groove and the surface of the second seat body 216 close to the first seat body 215 cooperate to form the installation cavity 217; or, a second groove (not shown) is formed on the surface of the second seat body 216 close to the first seat body 215, the surface of the first seat body 215 close to the second seat body 216 is a plane, and the second groove and the surface of the first seat body 215 close to the second seat body 216 cooperate to form the installation cavity 217; or, a first groove is formed on the surface of the first seat body 215 close to the second seat body 216, a second groove is formed on the surface of the second seat body 216 close to the first seat body 215, and the first groove and the second groove cooperate to form the installation cavity 217 (as shown in FIG. Figure 8The connecting surfaces of the first base 215 and the second base 216 are ultrasonically welded or laser welded to form an integrated structure of the heating element 12 and the fixed base 21, thereby preventing the heating element 12 with a relatively thin thickness from being easily broken during transportation or assembly.

[0085] When the heating element 12 is disposed in the mounting cavity 217, the first connecting hole 211 is divided into a first sub-connecting hole 2111 and a second sub-connecting hole 2112. The first sub-connecting hole 2111 is located on the first base 215, and the second sub-connecting hole 2112 is located on the second base 216. The atomizing surface of the heating element 12 is exposed through the first sub-connecting hole 2111, and the liquid absorbing surface of the heating element 12 is exposed through the second sub-connecting hole 2112, so as to realize the generation of the atomized aerosol matrix.

[0086] See also Fig. 9 and Fig.10 , Fig. 9 is a structural schematic diagram of a fourth embodiment of a heating element assembly in an atomizer provided by the present application, Fig.10 yes Fig. 9 A schematic cross-sectional view of a heat generating element assembly is provided.

[0087] In the fourth embodiment of the heating element assembly 20, the heating element assembly 20 includes a heating element 12, a fixed base 21 and a sealing member 22. The structure of the heating element 12 and the matching relationship between the heating element 12 and the fixed base 21 are the same as those in the first embodiment of the heating element assembly 20, the second embodiment of the heating element assembly 20 or the third embodiment of the heating element assembly 20, and are not described in detail. In the fourth embodiment of the heating element assembly 20, the material of the fixed base 21 is plastic, and the material of the sealing member 22 is silicone or fluororubber. The sealing member 22 is arranged on the surface of the fixed base 21.

[0088] The following description will take the matching relationship between the heating element 12 and the fixing base 21 in the first embodiment of the heating element assembly 20 as an example.

[0089] The seal 22 is arranged on the second surface of the fixed base 21; a second connecting hole 221 is arranged in the middle of the seal 22, and the second connecting hole 221 is connected to the first connecting hole 211, so that the aerosol generating matrix can reach the heating element 122 through the lower liquid channel 114, the second connecting hole 221, the first connecting hole 211, and the first micropore 1213, and be heated and atomized. Optionally, a positioning hole 222 is arranged on one of the fixed base 21 and the seal 22, and a positioning column 223 is arranged on the other; the positioning column 223 is arranged corresponding to the positioning hole 222; the fixed base 21 and the seal 22 are assembled by the positioning column 223 and the positioning hole 222. Optionally, the seal 22 is fixedly connected to the fixed base 21 by a rubber encapsulation process. It can be understood that the seal 22 and the fixed base 21 can also be fixed by other methods such as snap connection, magnetic connection, etc., and the specific design is based on the needs. In one embodiment, four positioning posts 223 are provided on the fixed base 21, and the four positioning posts 223 are respectively provided at the four corners of the fixed base 21, and four positioning holes 222 are provided on the sealing member 22. The height of the positioning posts 223 is greater than the thickness of the sealing member 22, and the positioning posts 223 pass through the positioning holes 222 of the sealing member 22, and are engaged with the corresponding grooves (not shown) provided on the atomizing top seat 111, so as to fix the heating element assembly 20, and cause the sealing member 22 to undergo slight elastic deformation, thereby achieving a better sealing effect.

[0090] Specifically, the second surface of the fixed base 21 is provided with an annular convex rib 214, which is arranged around the first communication hole 211; the sealing member 22 is sleeved on the outer side of the annular convex rib 214. Further, the distance between the surface of the sealing member 22 away from the heating element 12 and the heating element 12 is greater than the distance between the top surface of the annular convex rib 214 and the heating element 12, that is, the thickness of the sealing member 22 is greater than the height of the annular convex rib 214; the inner surface of the annular convex rib 214 is flush with the inner surface of the first communication hole 211. In one embodiment, the annular convex rib 214 is integrally formed with the fixed base 21.

[0091] It can be understood that during the atomization process, bubbles will flow back from the atomization surface of the heating element 12 through the first micropore 1213, and the bubbles are easy to adhere to the silicone part to form large bubbles, which will affect the liquid and cause the liquid to flow poorly. Since bubbles are relatively difficult to adhere to plastic parts, by making the seal 22 sleeved on the outside of the annular convex bone 214, at least the contact area between the reflux bubbles and the seal 22 (silicone part) can be reduced, and at least the influence of the reflux bubbles on the liquid can be reduced. When the height of the annular convex bone 214 is greater than or equal to the thickness of the seal 22, the reflux bubbles do not contact the seal 22, and the reflux bubbles will not affect the liquid (the seal 22 cannot buffer the extrusion force on the heating element). When the height of the annular convex bone 214 is less than the thickness of the seal 22, the contact area between the reflux bubbles and the seal 22 (silicone part) can be reduced, thereby reducing the influence of the reflux bubbles on the liquid, and the seal 22 can buffer the extrusion force on the heating element 12, and the seal 22 is squeezed, and the sealing effect is better. The inner surface of the annular protrusion 214 may be flush with the inner surface of the first connecting hole 211, or may not be flush with it. The design may be made according to the needs to reduce the influence of the reflux bubbles on the lower liquid.

[0092] By sleeve-mounting the seal 22 on the outer side of the annular protrusion 214, the inner surface of the annular protrusion 214 is flush with the inner surface of the first connecting hole 211, so that the overall shape of the heating element assembly 20 is regular, which is beneficial to reduce the assembly error of the heating element assembly 20 in the atomizer 1, thereby improving the performance of the electronic atomization device.

[0093] In the fourth embodiment of the heating element assembly 20, the structure of the ventilation groove 213 on the fixed base 21 is the same as that in the first embodiment of the heating element assembly 20, and will not be repeated. In this embodiment, a notch 2141 is provided on the annular convex rib 214, and the notch 2141 is correspondingly provided with the ventilation groove 213 and is connected to each other.

[0094] It can be understood that in other embodiments, the second surface of the fixed base 21 is a plane, and the seal 22 is arranged in affixed relation to the second surface of the fixed base 21. The fixed base 21 and the seal 22 can be fixed together by means of positioning columns / positioning holes, snap connections, etc.

[0095] See also Fig.11 and Fig.12 , Fig.11 is a structural schematic diagram of a fifth embodiment of a heating element assembly in an atomizer provided by the present application, Fig.12 yes Fig.11 A schematic cross-sectional view of a heat generating element assembly is provided.

[0096] In the fifth embodiment of the heating element assembly 20, the structure of the heating element assembly 20 is basically the same as the structure of the fourth embodiment of the heating element assembly 20, except that at least one protrusion 23 is provided on the hole wall of the first connecting hole 211 and / or the second connecting hole 221.

[0097] In the fifth embodiment of the heating element assembly 20, the heating element assembly 20 includes a heating element 12, a fixed base 21 and a sealing member 22. The structure of the heating element 12 and the arrangement of the heating element 12, the fixed base 21 and the sealing member 22 are the same as those in the fourth embodiment of the heating element assembly 20 and are not described in detail.

[0098] See also Fig.11 and Fig.12 , at least one protrusion 23 is provided on the hole wall of the first connecting hole 211 and / or the second connecting hole 221, and the protrusion 23 extends toward the direction of the internal space of the first connecting hole 211 and / or the second connecting hole 221; the protrusion 23 cooperates with the hole wall of the first connecting hole 211 and / or the second connecting hole 221 to form a microgroove 24, or a plurality of protrusions 23 form a microgroove 24; the capillary force of the heating element 12 is greater than the capillary force of the microgroove 24, that is, the capillary force of the first micropore 1213 is greater than the capillary force of the microgroove 24; there is a gap between the protrusion 23 and the heating element 12. Further, the gap between the protrusion 23 and the heating element 12 is 0.2mm-1.0mm. Specifically, the first connecting hole 211 exposes all the plurality of first micropores 1213, and the protrusion 23 extends above the plurality of first micropores 1213 and there is a gap between the protrusion 23 and the liquid inlet surface of the heating element 12.

[0099] By providing at least one protrusion 23 on the hole wall of the first connecting hole 211 and / or the second connecting hole 221, and there is a gap between the protrusion 23 and the heating element 12, it is possible to prevent the aerosol-generating matrix in the liquid storage chamber 13 from being dry-burned when the atomizer is inverted for suction because the aerosol-generating matrix in the liquid storage chamber 13 cannot supply liquid. Under normal conditions, the aerosol-generating matrix flows to the gap between the microgrooves 24 and the protrusions 23 and the heating element 12, and even when inverted, the gap between the microgrooves 24 and the protrusions 23 and the heating element 12 can lock the aerosol-generating matrix through capillary force. When inverted for suction, because the capillary force of the first micropore 1213 is greater than that of the microgrooves 24, the liquid in the microgrooves 24 is sucked over to provide the aerosol-generating matrix, thereby avoiding dry-burning. The gap between the protrusion 23 and the heating element 12 is between 0.2-1mm, so that the aerosol-generating matrix between the microgrooves 24 and the first micropore 1213 can be prevented from being interrupted.

[0100] In one embodiment, a protrusion 23 is provided on the hole wall of the first connecting hole 211, and the protrusion 23 extends toward the direction of the inner space of the first connecting hole 211. Two opposite sides of the protrusion 23 respectively form two micro grooves 24 with the hole wall of the first connecting hole 211, and the capillary force of the first micro hole 1213 is greater than the capillary force of the micro groove 24. There is a gap of 0.2mm-1.0mm between the surface of the protrusion 23 close to the heating element 12 and the heating element 12; that is, the thickness of the protrusion 23 is 0.2mm-1.0mm less than the depth of the first connecting hole 211. It can be understood that when the two ends of the protrusion 23 are respectively connected to the opposite sides of the hole wall of the first connecting hole 211, the two microgrooves 24 formed by the cooperation of one protrusion 23 and the hole wall of the first connecting hole 211 are independent of each other; when one end of the protrusion 23 is set on the hole wall of the first connecting hole 211, and there is a gap between the other end and the hole wall of the first connecting hole 211, the two microgrooves 24 formed by the cooperation of one protrusion 23 and the hole wall of the first connecting hole 211 are interconnected (that is, forming a continuous microgroove 24), and the specific design is based on needs. The number of protrusions 23 can be designed as needed. The arrangement of the protrusions 23 in this embodiment can be applied to the structure of the first embodiment of the heating element assembly 20.

[0101] In another embodiment, a protrusion 23 is provided on the hole wall of the second connecting hole 221, and the protrusion 23 extends toward the direction of the inner space of the second connecting hole 221. Two opposite sides of the protrusion 23 respectively form two micro grooves 24 with the hole wall of the second connecting hole 221, and the capillary force of the first micro hole 1213 is greater than the capillary force of the micro groove 24. There is a gap of 0.2mm-1.0mm between the surface of the protrusion 23 close to the heating element 12 and the heating element 12; that is, the thickness of the protrusion 23 is the same as the depth of the second connecting hole 221, and the depth of the first connecting hole 211 is 0.2mm-1.0mm. It can be understood that when the two ends of the protrusion 23 are respectively connected to the two opposite sides of the hole wall of the second connecting hole 221, the two microgrooves 24 formed by one protrusion 23 and the hole wall of the second connecting hole 221 are independent of each other; when one end of the protrusion 23 is set on the hole wall of the second connecting hole 221, and there is a gap between the other end and the hole wall of the second connecting hole 221, the two microgrooves 24 formed by one protrusion 23 and the hole wall of the second connecting hole 221 are interconnected (that is, forming a continuous microgroove 24), and the specific design is carried out according to needs. The number of protrusions 23 can be designed according to needs.

[0102] In another embodiment, a protrusion 23 is provided on the hole wall of the first connecting hole 211 and the second connecting hole 221; that is, the protrusion 23 is a two-layer structure, one layer is provided on the hole wall of the first connecting hole 211, and the other layer is provided on the hole wall of the second connecting hole 221. The protrusion 23 extends toward the direction of the internal space of the first connecting hole 211 and the second connecting hole 221. The opposite sides of the protrusion 23 respectively form two micro grooves 24 with the hole walls of the first connecting hole 211 and the second connecting hole 221, and the capillary force of the first micro hole 1213 is greater than the capillary force of the micro groove 24. There is a gap of 0.2mm-1.0mm between the surface of the protrusion 23 close to the heating element 12 and the heating element 12; it can be that the surface of the protrusion 23 away from the heating element 12 is flush with the surface of the sealing member 22 away from the heating element 12, and the sum of the depth of the first connecting hole 211 and the depth of the second connecting hole 221 is 0.2mm-1.0mm greater than the thickness of the protrusion 23. It can be understood that when the two ends of the protrusion 23 are respectively connected to the opposite sides of the hole wall of the first connecting hole 211 and the second connecting hole 221, the two micro grooves 24 formed by the cooperation of one protrusion 23 and the hole wall of the first connecting hole 211 and the second connecting hole 221 are independent of each other; when one end of the protrusion 23 is set on the hole wall of the first connecting hole 211 and the second connecting hole 221, and there is a gap between the other end and the hole wall of the first connecting hole 211 and the second connecting hole 221, the two micro grooves 24 formed by one protrusion 23 and the hole wall of the first connecting hole 211 and the second connecting hole 221 are interconnected (that is, forming a continuous micro groove 24), and the specific design is carried out according to needs. The number of protrusions 23 can be designed according to needs.

[0103] In another embodiment, the second surface of the fixed base 21 is provided with an annular convex bone 214, and the annular convex bone 214 is arranged around the first connecting hole 211; the sealing member 22 is sleeved on the outer side of the annular convex bone 214, and the inner surface of the annular convex bone 214 is flush with the inner surface of the first connecting hole 211. The cross-sectional shape of the first connecting hole 211 is rectangular. A protrusion 23 is respectively provided on the opposite sides of the hole wall of the first connecting hole 211, each protrusion 23 extends toward the direction of the internal space of the first connecting hole 211, and the protrusion 23 extends to the inner surface of the annular convex bone 214 in the thickness direction thereof. One end of each protrusion 23 is connected to a side wall of the first connecting hole 211, and the other end extends to the opposite side wall and is spaced apart from the opposite side wall; the two protrusions 23 are arranged in parallel and spaced apart. Optionally, the surfaces of the two protrusions 23 away from the heating element 12 are flush with the top surface of the annular convex bone 214. The two protrusions 23 cooperate with the hole wall of the first connecting hole 211 to form a continuous micro groove 24. The shape of the micro groove 24 is the same as that of the heating element 122 and is correspondingly arranged, for example, both are S-shaped. There is a gap of 0.2mm-1.0mm between the surface of the protrusion 23 close to the heating element 12 and the heating element 12 (such as Fig.12 shown).

[0104] See also Fig.13 , Fig.13 It is a structural schematic diagram of the sixth embodiment of the heating element assembly in the atomizer provided by the present application.

[0105] The sixth embodiment of the heat generating element assembly 20 is different from the first embodiment of the heat generating element assembly 20 in that the electrode 123 is embedded in the fixing base 21 .

[0106] In the sixth embodiment of the heating element assembly 20, the heating element assembly 20 further includes two leads 25 and two pins 26. The pins 26 are spaced apart from the heating element 122. The two leads 25 are respectively arranged on both sides of the heating element 122, and the two pins 26 are respectively arranged on both sides of the heating element 122. The lead 25 has a first end and a second end opposite to each other, the first end of the lead 25 is electrically connected to the electrode 123, and the second end of the lead 25 is electrically connected to the pin 26. The pin 26 has a third end and a fourth end opposite to each other, the third end of the pin 26 is buried in the fixed base 21 and connected to the second end of the lead 25, and the fourth end of the pin 26 is exposed to the outside of the fixed base 21 to be electrically connected to the host 2. Specifically, the third end of the pin 26 can be buried in the fixed base 21 by injection molding so as to fix the pin 26 to the fixed base 21. The fourth end of the pin 26 can be suspended or attached to the outer surface of the fixed base 21. For example, the fourth end of the pin 26 extends to the surface of the fixed base 21 on the atomizing side, so that the pin 111 is easily electrically connected to the ejector pin of the host 2. The electrode 123, the lead 25 and part of the pin 26 are embedded in the fixed base 21, for example, embedded in the fixed base 21 by injection molding, which can prevent corrosion by the aerosol generating matrix or aerosol. The material of the lead 25 includes gold or aluminum.

[0107] 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. A heating element assembly, characterized in that: include: A fixed base, wherein the fixed base is provided with a first communicating hole; A heating element, the heating element comprising a sheet-like substrate and a heating element, the sheet-like substrate comprising a liquid absorbing surface and an atomizing surface opposite to the liquid absorbing surface, the heating element being arranged on the atomizing surface or buried inside the sheet-like substrate; The sheet-like substrate is a dense substrate with a thickness of less than or equal to 1 mm, the sheet-like substrate is glass or dense ceramic, a plurality of first micropores are provided on the sheet-like substrate, the first micropores are through holes penetrating the liquid absorption surface and the atomization surface, the first micropores are used to guide the aerosol generating matrix from the liquid absorption surface to the atomization surface, and the first micropores have a capillary effect; or the sheet-like substrate is a porous ceramic sheet with a thickness of less than or equal to 2 mm; The heating element is disposed on the fixed base, and the heating element and the fixed base form an integral structure; the heating element is at least partially exposed through the first connecting hole; Wherein, the fixed base comprises a first surface and a second surface arranged opposite to each other, and the heating element is attached to the first surface of the fixed base and spans the first connecting hole; or, The fixing base comprises a first surface and a second surface arranged opposite to each other, the first surface of the fixing base has a mounting groove, the first communicating hole is connected with the mounting groove from the bottom wall of the mounting groove, and the heating element is at least partially embedded in the mounting groove and spans the first communicating hole; or, The heating element is embedded in the fixing base and spans the first connecting hole.

2. The heating element assembly according to claim 1, characterized in that: The heating element is at least partially embedded in the mounting groove and spans the first connecting hole, and the surface of the sheet-like base close to the bottom wall of the mounting groove is at least partially exposed through the first connecting hole; the surface of the sheet-like base away from the bottom wall of the mounting groove is flush with the first surface of the fixed base.

3. The heating element assembly according to claim 1, characterized in that: The heating element is embedded in the fixing base and spans the first connecting hole, and the fixing base wraps the entire edge of the heating element.

4. The heating element assembly according to any one of claims 1 to 3, characterized in that: The fixing base and the heating element are formed into an integral structure through in-mold injection molding.

5. The heating element assembly according to claim 1, characterized in that: The heating body further includes an electrode, which is disposed on the atomizing surface of the sheet-like substrate and is electrically connected to the heating element; the heating element and the electrode are exposed through the first connecting hole.

6. The heating element assembly according to claim 1, characterized in that: The sheet-like substrate is the dense substrate, and the sheet-like substrate 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 first connecting holes completely expose the micropore array area.

7. The heating element assembly according to claim 1, characterized in that: The material of the fixing base is silicone or fluororubber.

8. The heating element assembly according to claim 1, characterized in that: The material of the fixing base is plastic.

9. The heating element assembly according to claim 8, characterized in that: The heating element assembly also includes a seal, the seal material is silicone or fluororubber; the seal is arranged on the surface of the fixed base; a second connecting hole is arranged in the middle of the seal, and the second connecting hole is connected to the first connecting hole.

10. The heating element assembly according to claim 9, characterized in that: When the heating element is attached to the first surface of the fixing base or the heating element is arranged in the mounting groove of the first surface of the fixing base, the sealing member is arranged on the second surface of the fixing base.

11. The heating element assembly according to claim 9, characterized in that: The sealing element is fixedly connected to the fixed base through a rubber encapsulation process.

12. The heating element assembly according to claim 9, characterized in that: One of the fixed base and the sealing member is provided with a positioning hole, and the other is provided with a positioning column; the positioning column is provided corresponding to the positioning hole; the fixed base and the sealing member are assembled through the positioning column and the positioning hole.

13. The heating element assembly according to claim 9, characterized in that: The surface of the fixed base is provided with an annular convex rib, and the annular convex rib is arranged around the first connecting hole; the sealing member is sleeved on the outer side of the annular convex rib.

14. The heating element assembly according to claim 13, characterized in that: The distance between the surface of the sealing member away from the heating element and the heating element is greater than the distance between the top surface of the annular convex rib and the heating element, and the inner surface of the annular convex rib is flush with the inner surface of the first connecting hole.

15. The heating element assembly according to claim 9, characterized in that: At least one protrusion is arranged on the hole wall of the first connecting hole and / or the second connecting hole, and the protrusion extends toward the direction of the internal space of the first connecting hole and / or the second connecting hole; the protrusion cooperates with the hole wall of the first connecting hole and / or the second connecting hole to form a microgroove, or microgrooves are formed between multiple protrusions; the capillary force of the heating element is greater than the capillary force of the microgroove; and there is a gap between the protrusion and the heating element.

16. The heating element assembly according to claim 15, characterized in that: The gap between the protrusion and the heating element is 0.2mm-1.0mm.

17. The heating element assembly according to claim 15, characterized in that: The protrusion cooperates with the hole wall of the first connecting hole and / or the second connecting hole to form a continuous micro groove; the heating body also includes a heating element, and the shape of the micro groove is the same as that of the heating element and is correspondingly arranged.

18. The heating element assembly according to claim 1, characterized in that: A ventilation groove is provided on the surface of the fixed base, one end of the ventilation groove is connected to the first connecting hole, and the other end extends to the edge of the fixed base; the ventilation groove is used to ventilate the liquid storage cavity.

19. A heating element assembly, characterized in that: include: A fixed base, wherein the fixed base is provided with a first communicating hole; A heating element, the heating element comprising a sheet-like substrate and a heating element, the sheet-like substrate comprising a liquid absorbing surface and an atomizing surface opposite to the liquid absorbing surface, the heating element being arranged on the atomizing surface or buried inside the sheet-like substrate; The sheet-like substrate is a dense substrate with a thickness of less than or equal to 1 mm, the sheet-like substrate is glass or dense ceramic, a plurality of first micropores are provided on the sheet-like substrate, the first micropores are through holes penetrating the liquid absorption surface and the atomization surface, the first micropores are used to guide the aerosol generating matrix from the liquid absorption surface to the atomization surface, and the first micropores have a capillary effect; or the sheet-like substrate is a porous ceramic sheet with a thickness of less than or equal to 2 mm; The heating element is disposed on the fixed base, and the heating element and the fixed base form an integral structure; the heating element is at least partially exposed through the first connecting hole; Wherein, the fixed base includes a first seat body and a second seat body, the first seat body and the second seat body cooperate to form the first connecting hole and the installation cavity, and the heating element is arranged in the installation cavity; the connecting surfaces of the first seat body and the second seat body are ultrasonically welded or laser welded to form an integrated structure between the heating element and the fixed base.

20. An atomizer, characterized in that: It comprises a liquid storage chamber and a heating element assembly; the liquid storage chamber is used to store a liquid aerosol generating matrix, and the heating element assembly is used to atomize the aerosol generating matrix; the heating element assembly is the heating element assembly described in any one of claims 1-19.

21. An electronic atomization device, characterized in that: It comprises an atomizer and a host, wherein the atomizer is the atomizer according to claim 20, and the host controls the operation of the atomizer.

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