Heating assembly, atomizer and electronic atomization device

Abstract

The application discloses a heating assembly, an atomizer and an electronic atomization device. The heating assembly comprises a porous base and a heating wire. The porous base comprises an atomization part and non-atomization parts located on both sides of the atomization part. The heating wire is arranged on the atomization part of the porous base. In a direction perpendicular to an axis of the porous base, the width of the cross-sectional shape of the atomization part gradually increases and then gradually decreases in the length direction. The maximum length of the cross-sectional shape of the atomization part is greater than the maximum width of the cross-sectional shape of the atomization part. When airflow flows through the atomization part, vortex is avoided from being formed on the leeward surface of the atomization part, and the transmission efficiency of aerosol is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of atomization, in particular to a heating assembly, an atomizer and an electronic atomization device. BACKGROUND

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

[0003] The existing heating assembly is a cotton core heating wire assembly. Specifically, a single wire, double wires or multi-wires are wound into a cylindrical spring wire, and the cylindrical spring wire is wound on the surface of a cylindrical cotton core to form a cotton core heating wire assembly. However, the aerosol transmission efficiency of the atomizer using the cotton core heating wire assembly is low. SUMMARY

[0004] The heating assembly, the atomizer and the electronic atomization device provided by the present application solve the technical problem of low aerosol transmission efficiency in the prior art.

[0005] In order to solve the above technical problems, the first technical solution provided by the present application is to provide a heating assembly, comprising a porous base and a heating wire; the porous base comprises an atomization part and non-atomization parts located on both sides of the atomization part; the heating wire is arranged on the atomization part of the porous base; wherein, along the direction perpendicular to the axis of the porous base, the width of the cross-sectional shape of the atomization part gradually increases in the length direction first and then gradually decreases, and the maximum length of the cross-sectional shape of the atomization part is greater than the maximum width of the cross-sectional shape of the atomization part.

[0006] In some embodiments, the width of the cross-sectional shape of the atomization part gradually increases to the maximum width in the length direction first and then gradually decreases again.

[0007] In some embodiments, the width of the cross-sectional shape of the atomization part gradually increases to the maximum width in the length direction first and then gradually decreases again.

[0008] In some embodiments, the cross-sectional shape of the atomization part is streamlined.

[0009] In some embodiments, the atomization part is formed by pinching a certain segment of the cylindrical porous base.

[0010] In some embodiments, the cross-sectional shape of the atomization part comprises a first end and a second end, and the maximum width of the first end is less than the maximum width of the second end.

[0011] In some embodiments, the cross-sectional shape of the atomization part comprises two side edges extending from the second end to the first end, and the side edges are straight lines or curves or broken lines.

[0012] In some embodiments, the distance between the two side edges gradually decreases or gradually increases first and then gradually decreases along the direction from the second end to the first end.

[0013] In some embodiments, the ratio of the maximum width to the maximum length of the cross-sectional shape of the atomization part is 1:3-1:5.

[0014] In some embodiments, the cross-sectional shape of the atomization part is an axisymmetric figure.

[0015] In some embodiments, the cross-sectional shape of the non-atomization part is circular along the direction perpendicular to the axis of the porous matrix.

[0016] In some embodiments, the porous matrix is a cotton core or a porous ceramic.

[0017] To solve the above technical problems, the second technical solution provided by the present application is to provide an atomizer, comprising an airflow channel and a heating assembly; the heating assembly is any one of the above-mentioned heating assemblies; at least the atomization part of the heating assembly is located in the airflow channel; the axis direction of the heating assembly is perpendicular to the airflow direction in the airflow channel, and the airflow in the airflow channel flows from the side where the second end is located to the side where the first end is located.

[0018] In some embodiments, only the atomization part of the heating assembly is located in the airflow channel.

[0019] In some embodiments, the non-atomization part is arranged at the opening of the side wall of the airflow channel and outside the airflow channel.

[0020] To solve the above technical problems, the third technical solution provided by the present application is to provide an electronic atomization device, comprising an atomizer and a main machine; the atomizer is used for storing and atomizing an aerosol generating substrate; the atomizer is the above-mentioned atomizer; the main machine is used for providing energy to the atomizer and controlling the atomizer to atomize the aerosol generating substrate.

[0021] The beneficial effects of the present application: Different from the prior art, the present application discloses a heating assembly, an atomizer and an electronic atomization device, the heating assembly comprises a porous matrix and a heating wire; the porous matrix comprises an atomization part and non-atomization parts located on both sides of the atomization part; the heating wire is arranged in the atomization part of the porous matrix; wherein, along the direction perpendicular to the axis of the porous matrix, the width of the cross-sectional shape of the atomization part gradually increases and then gradually decreases in the length direction, the maximum length of the cross-sectional shape of the atomization part is greater than the maximum width of the cross-sectional shape of the atomization part, which avoids the formation of vortex on the leeward surface of the atomization part when the airflow flows through the atomization part, and is beneficial to improve the transmission efficiency of the aerosol. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0023] Figure 1 is a structural schematic diagram of an electronic atomization device provided by an embodiment of the present application;

[0024] Figure 2 is a structural schematic diagram of an atomizer of the electronic atomization device provided by the embodiment of the present application; Figure 1

[0025] Figure 3 is a sectional view of the atomizer of the electronic atomization device provided by the embodiment of the present application along the direction of B-B; Figure 1

[0026] Figure 4 is a structural schematic diagram of an upper seat of the atomizer provided by the embodiment of the present application; Figure 2

[0027] Figure 5 is a structural schematic diagram of a lower seat of the atomizer provided by the embodiment of the present application; Figure 2

[0028] Figure 6 is a structural schematic diagram of a heating assembly of the atomizer provided by the embodiment of the present application; Figure 2

[0029] Figure 7 is a structural schematic diagram of a porous matrix of the heating assembly provided by the embodiment of the present application; Figure 6

[0030] Figure 8 is a structural schematic diagram of a second embodiment of the porous matrix of the heating assembly provided by the embodiment of the present application; Figure 6

[0031] Figure 9 is a structural schematic diagram of a third embodiment of the porous matrix of the heating assembly provided by the embodiment of the present application; Figure 6

[0032] Figure 10 is a structural schematic diagram of a fourth embodiment of the porous matrix of the heating assembly provided by the embodiment of the present application; Figure 6

[0033] Figure 11 is a structural schematic diagram of a fifth embodiment of the porous matrix of the heating assembly provided by the embodiment of the present application; Figure 6

[0034] Figure 12 ​​​​​​​​​​is Figure 6 Structure diagram of a sixth embodiment of the porous substrate of the heat generating assembly provided;

[0035] Figure 13 is Figure 6 Structure diagram of a seventh embodiment of the porous substrate of the heat generating assembly provided;

[0036] Figure 14 is Figure 6 Structure diagram of an eighth embodiment of the porous substrate of the heat generating assembly provided. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0038] In the following description, specific details are set forth in connection with the particular system structures, interfaces, techniques and the like to provide a thorough understanding of the present application. It should be apparent to those skilled in the art, however, that the present application can be practiced without many of the specific details.

[0039] The terms "first", "second", "third" in the present application are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly. The terms "include" and "have" and any variations thereof in the embodiments of the present application are intended to cover the non-exclusive inclusion. For example, the processes, methods, systems, products or devices including a series of steps or units are not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or components inherent to the processes, methods, products or devices.

[0040] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase that the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0041] The application will be described in detail below with reference to the accompanying drawings and embodiments.

[0042] Applicant found that, due to the airflow direction being perpendicular to the axis of the cotton heating wire assembly, the airflow is easy to form vortex when passing through the back of the cotton heating wire assembly, so that part of the aerosol is retained in the airflow channel to form condensate, causing the leakage of the suction liquid; at the same time, due to the retention of part of the aerosol in the airflow channel, the aerosol transmission efficiency is reduced. In addition, the vortex formed by the airflow at the back of the cotton heating wire assembly also makes the aerosol distribution relatively scattered, affecting the taste. In view of this, the application provides a heating assembly 14, an atomizer 1 and an electronic atomization device 100.

[0043] Please refer to Figure 1 , Figure 1 is a structural schematic diagram of an electronic atomization device provided by an embodiment of the application. The application provides an electronic atomization device 100, which can be used for the atomization of an aerosol generating substrate. The electronic atomization device 100 can be used in different fields, such as medical treatment, beauty, leisure smoking, etc. In this embodiment, the electronic atomization device 100 is used for leisure smoking.

[0044] The electronic atomization device 100 comprises an atomizer 1 and a main machine 2 which are electrically connected to each other. The atomizer 1 is used for storing an aerosol generating substrate and atomizing the aerosol generating substrate to form an aerosol for a user to smoke. The specific structure and function of the atomizer 1 can be referred to the specific structure and function of the atomizer 1 involved in the following embodiments, and the same or similar technical effects can be achieved, which will not be described here again.

[0045] The main machine 2 comprises a battery (not shown in the figure) and a controller (not shown in the figure). The battery is used to provide energy for the working of the atomizer 1, so that the atomizer 1 can atomize the aerosol generating substrate to form an aerosol; the controller is used to control the working of the atomizer 1 to atomize the aerosol generating substrate. The main machine 2 further comprises a battery holder, an airflow sensor and other elements.

[0046] The atomizer 1 and the main machine 2 can be integrally arranged or detachably connected, which is designed according to specific needs.

[0047] Please refer to Figures 2 to 5 , Figure 2 is Figure 1A cross-sectional view of the atomizer of the electronic atomization device along the A-A direction, Figure 3 is Figure 1 A cross-sectional view of the atomizer of the electronic atomization device along the B-B direction, Figure 4 is Figure 2 A structural view of the upper seat of the atomizer, Figure 5 is Figure 2 A structural view of the lower seat of the atomizer.

[0048] The atomizer 1 comprises a housing 11, an upper seat 12, a lower seat 13, and a heating assembly 14. One end of the housing 11 forms a suction port 111, and the other end of the housing 11 is an open end (not marked in the figure). The upper seat 12, the lower seat 13, and the heating assembly 14 are arranged in the housing 11, and the lower seat 13 seals the open end of the housing 11. The heating assembly 14 is arranged on the upper seat 12 and / or the lower seat 13. Specifically, the upper seat 12 and / or the lower seat 13 are provided with a mounting structure (not marked in the figure), and the heating assembly 14 is fixed on the upper seat 12 and / or the lower seat 13 through the mounting structure; the upper seat 12 and the lower seat 13 cooperate to form an atomization cavity 15, and the heating assembly 14 is at least partially located in the atomization cavity 15.

[0049] The housing 11 and the upper seat 12 cooperate to form a liquid storage cavity 16, which is used to store an aerosol generating substrate, such as oil containing aroma components, liquid medicine, etc. The upper seat 12 is provided with a lower liquid port 120, and the heating assembly 14 is in fluid communication with the liquid storage cavity 16 through the lower liquid port 120, that is, the aerosol generating substrate in the liquid storage cavity 16 enters the heating assembly 14 through the lower liquid port 120, and the heating assembly 14 heats and atomizes the aerosol generating substrate to generate an aerosol. It can be understood that the heating assembly 14 completely blocks the lower liquid port 120, so that the aerosol generating substrate flowing out of the lower liquid port 120 all enters the heating assembly 14, preventing the aerosol generating substrate flowing out of the lower liquid port 120 from flowing to other places and causing liquid leakage.

[0050] Specifically, the housing 11 is formed with an air outlet passage 110, and the port of the air outlet passage 110 is the suction port 111. Referring to Figure 4The upper seat 12 comprises a first body part 121 and a boss 122 arranged on the first body part 121; the first body part 121 comprises a top wall 1211 and an annular side wall 1212, and the boss 122 is arranged on a surface of the top wall 1211 away from the annular side wall 1212. The boss 122 is provided with an air outlet hole 1221, which is in communication with the air outlet channel 110; the top wall 1211 is provided with an air outlet (not marked in the figure) corresponding to the air outlet hole 1221. The top wall 1211 serves as a bottom wall of the liquid storage cavity 16; the top wall 1211 is provided with two liquid outlet openings 120, which are respectively located on two sides of the boss 122. The outer surface of the annular side wall 1212 is in abutment with the inner surface of the shell 11, and part of the inner surface of the annular side wall 1212 is in abutment with the heating assembly 14, so that the heating assembly 14 completely covers the liquid outlet openings 120 on the top wall 1211. Optionally, the material of the upper seat 12 is a material with sealing performance, such as silica gel or fluororubber, which is also used as a sealing piece, thereby reducing the number of components.

[0051] Referring to Figure 5 The lower seat 13 comprises a second body part 131. The second body part 131 is provided with a first recess 1312 close to the surface of the upper seat 12, the bottom wall of the first recess 1312 is provided with a second recess 1313, the bottom wall of the second recess 1313 is provided with an air inlet hole 1314, and the air inlet hole 1314 communicates the outside air with the internal space of the second recess 1313. The bottom wall of the first recess 1312 is also provided with an annular protrusion 1315, and the internal space formed by the annular protrusion 1315 communicates the air outlet hole 1221 with the internal space of the second recess 1313; in this embodiment, the inner surface of the side wall of the annular protrusion 1315 is flush with the inner surface of the side wall of the second recess 1313. In order to ensure the air tightness, the annular protrusion 1315 extends into the air outlet hole 1221, at this time, the end surface of the side wall of the first recess 1312 is in abutment with the top wall 1211 of the upper seat 12.

[0052] The side wall of the annular protrusion 1315 is symmetrically provided with two openings 1316, and the two openings 1316 form the mounting structure described above; the heating assembly 14 is arranged on the openings 1316, and the middle part of the heating assembly 14 is suspended, and the two ends of the heating assembly 14 are located outside the space formed by the annular protrusion 1315.

[0053] That is, the inner wall surface of the second groove 1313 of the lower seat 13, the inner wall surface of the annular protrusion 1315 and the top wall 1211 of the upper seat 12 cooperatively form the atomization cavity 15. The atomization cavity 15 is in communication with the air outlet channel 110 through the air outlet of the top wall 1211 and the air outlet hole 1221 of the boss 122. The atomization cavity 15 is in communication with the ambient gas through the air inlet hole 1314 of the bottom wall of the second groove 1313. In the present embodiment, the middle portion of the heating assembly 14 is located in the atomization cavity 15. It can be understood that the air inlet hole 1314, the atomization cavity 15, the air outlet hole 1221, the air outlet channel 110 and the suction port 111 cooperatively form an air flow channel (not marked in the figure); the ambient gas enters the atomization cavity 15 from the air inlet hole 1314, carries the aerosol heated and atomized by the heating assembly 14 to flow out from the air outlet hole 1221, the air outlet channel 110 and the suction port 111, and is inhaled by the user.

[0054] Please refer to Figures 6 to 9 , Figure 6 is Figure 2 a structural schematic view of a heating assembly of an atomizer provided by the present application, Figure 7 is Figure 6 a structural schematic view of a first embodiment of a porous substrate of a heating assembly provided by the present application, Figure 8 is Figure 6 a structural schematic view of a second embodiment of a porous substrate of a heating assembly provided by the present application, Figure 9 is Figure 6 a structural schematic view of a third embodiment of a porous substrate of a heating assembly provided by the present application, Figure 10 is Figure 6 a structural schematic view of a fourth embodiment of a porous substrate of a heating assembly provided by the present application, Figure 11 is Figure 6 a structural schematic view of a fifth embodiment of a porous substrate of a heating assembly provided by the present application, Figure 12 is Figure 6 a structural schematic view of a sixth embodiment of a porous substrate of a heating assembly provided by the present application, Figure 13 is Figure 6 a structural schematic view of a seventh embodiment of a porous substrate of a heating assembly provided by the present application, Figure 14 is Figure 6 a structural schematic view of an eighth embodiment of a porous substrate of a heating assembly provided by the present application.

[0055] The heating assembly 14 includes a porous base 141 and a heating wire 142; the porous base 141 includes an atomization portion 1411 and non-atomization portions 1412 located on both sides of the atomization portion 1411, and the heating wire 142 is arranged on the atomization portion 1411 of the porous base 141. The porous base 141 can be a cotton core, a porous ceramic, etc., and is specifically selected according to needs. The atomization portion 1411 and the non-atomization portions 1412 of the porous base 141 both have a liquid guiding function. Since the heating wire 142 is arranged on the atomization portion 1411, the temperature of the atomization portion 1411 is higher than that of the non-atomization portions 1412, and the temperature of the atomization portion 1411 can atomize the aerosol generating substrate, and the aerosol generating substrate is mainly atomized in the atomization portion 1411. The heating wire 142 can be arranged on the atomization portion 1411 in a winding manner, or can be arranged on the atomization portion 1411 in a printing manner, and is specifically designed according to needs.

[0056] Please refer to Figure 3 In this embodiment, the axis direction of the heating assembly 14 is perpendicular to the airflow direction in the airflow channel, and only the atomization portion 1411 is located in the atomization cavity 15, that is, only the atomization portion 1411 is located in the airflow channel. The non-atomization portions 1412 are arranged outside the space surrounded by the opening 1316 and the annular protrusion 1315, wherein the opening 1316 is located on the side wall of the atomization cavity 15; that is, the non-atomization portions 1412 are arranged at the opening of the side wall of the airflow channel and outside the airflow channel. The non-atomization portions 1412 completely block the liquid inlet 120, and the non-atomization portions 1412 guide the aerosol generating substrate to the atomization portion 1411, which is heated and atomized by the heating wire arranged on the surface of the atomization portion 1411. In other embodiments, the atomization portion 1411 and part of the non-atomization portions 1412 of the porous base 141 can be located in the atomization cavity 15, and are specifically designed according to needs.

[0057] The width of the cross-sectional shape of the atomization portion 1411 gradually increases and then gradually decreases in the length direction (referring to the length direction of the cross-sectional shape of the atomization portion 1411), and the maximum length of the cross-sectional shape of the atomization portion 1411 is greater than the maximum width of the cross-sectional shape of the atomization portion 1411. The length direction of the cross-sectional shape of the atomization portion 1411 is perpendicular to the width direction of the cross-sectional shape of the atomization portion 1411. The dimension of the cross-sectional shape of the atomization portion 1411 perpendicular to the airflow direction is defined as the width.

[0058] It can be understood that the flow direction of the airflow is parallel to the length direction of the cross-sectional shape of the atomization part 1411; along the length direction of the cross-sectional shape of the atomization part 1411, the atomization part 1411 includes a windward surface and a leeward surface, and the windward surface is arranged opposite to the leeward surface. The airflow flows from the windward surface to the leeward surface along the surface of the porous base body 141, and by setting the width of the cross-sectional shape of the atomization part 1411 to gradually increase first and then gradually decrease in the length direction thereof, and setting the maximum length of the cross-sectional shape of the atomization part 1411 to be greater than the maximum width of the cross-sectional shape of the atomization part 1411, the airflow can avoid forming a low-speed and low-pressure region between the airflow and the leeward surface of the atomization part 1411 during the flow to the leeward surface, avoid flow separation between the airflow and the leeward surface of the atomization part 1411, and further avoid vortex, so as to improve the aerosol transmission efficiency, reduce the liquid leakage during suction, and make the aerosol distribution more concentrated and the taste better.

[0059] Optionally, the width of the cross-sectional shape of the atomization part 1411 gradually increases first and then gradually decreases in the length direction (as shown in Figure 7 、 Figure 8 、 Figure 10 、 Figure 13 and Figure 14 ).

[0060] Optionally, the width of the cross-sectional shape of the atomization part 1411 gradually increases first and then gradually decreases in the length direction (as shown in Figure 9 ).

[0061] Optionally, the width of the cross-sectional shape of the atomization part 1411 gradually increases first and then gradually decreases in the length direction (as shown in Figure 11 and Figure 12 ).

[0062] Optionally, the cross-sectional shape of the atomization part 1411 is streamlined (as shown in Figure 7 、 Figure 8 、 Figure 9 、 Figure 11 、 Figure 13 ). By making the cross-sectional shape of the atomization part 1411 streamlined, the possibility of flow separation between the airflow and the surface of the atomization part 1411 during the flow of the airflow from the windward surface to the leeward surface of the atomization part 1411 is reduced, and vortex formation on the leeward surface is further avoided.

[0063] Optionally, the atomization part 1411 is formed by pinching a certain section of the cylindrical porous base body 141. The atomization part 1411 is formed in this way, which is simple to operate.

[0064] The porous base body 141 will be further described in detail below.

[0065] Referring to Figure 7Along a direction perpendicular to the axis of the porous substrate 141, the cross-sectional shape of the atomizing section 1411 includes a first end a and a second end b. Figure 3 Along the axis perpendicular to the porous substrate 141, the end of the cross-section of the porous substrate 141 closest to the air inlet 1314 is defined as the second end b, and the end of the cross-section of the porous substrate 141 away from the air inlet 1314 is defined as the first end a; that is, the windward side of the porous substrate 141 is defined as the surface on the side where the second end b is located, and the leeward side of the porous substrate 141 is defined as the surface on the side where the first end a is located, and the airflow in the airflow channel flows from the side where the second end b is located to the side where the first end a is located. The dimension of the cross-sectional shape of the atomizing section 1411 perpendicular to the airflow direction is defined as the width.

[0066] The cross-sectional shape of the atomizing section 1411 also includes two side edges C extending from the second end b to the first end a, and a first end edge A and a second end edge B connecting the two side edges C.

[0067] Optionally, the maximum width of the first end a is less than the maximum width of the second end b (e.g., Figure 7 , Figure 8 , Figure 9 and Figure 10 (As shown). The surface on the side where the second end b is located serves as the windward side. The airflow flows along the surface of the porous substrate 141 from the side where the second end b is located to the side where the first end a is located. By making the maximum width of the first end a smaller than the maximum width of the second end b, the airflow slows down as it flows to the side where the first end a is located. This avoids the formation of a low-speed and low-pressure area between the airflow and the surface where the first end a is located, and prevents the airflow from separating from the surface where the first end a is located. This also avoids the formation of eddies on the side where the first end a is located, which helps to improve the aerosol transmission efficiency, reduce suction leakage, and make the aerosol distribution more concentrated, thus maintaining a better taste.

[0068] This application sets the width of the cross-sectional shape of the atomizing part 1411 to gradually increase and then gradually decrease along its length, which is equivalent to setting both the windward and leeward sides of the atomizing part 1411 to be pointed. This application sets the maximum width of the first end a to be less than the maximum width of the second end b, which is equivalent to making the tip of the windward side of the atomizing part 1411 more blunt than the tip of the leeward side.

[0069] Optionally, the maximum width of the first end a is the same as the maximum width of the second end b (e.g., Figure 11 , Figure 12 , Figure 13 , Figure 14 (As shown).

[0070] Optionally, both the first end A and the second end B are convex curves (e.g., Figure 7 ,Figure 8 、 Figure 9 、 Figure 11 and Figure 13 .

[0071] Optionally, the first end edge A and the second end edge B are both convex broken lines (as shown in Figure 10 、 Figure 12 、 Figure 14 .

[0072] Optionally, the side edge C is a straight line (as shown in Figure 8 、 Figure 11 and Figure 12 .

[0073] Optionally, the side edge C can be a curve (as shown in Figure 7 、 Figure 9 and Figure 13 .

[0074] Optionally, the side edge C can be a broken line (as shown in Figure 10 and Figure 14 .

[0075] Optionally, the distance between the two side edges C gradually decreases along the direction from the second end b to the first end a (as shown in Figure 8 .

[0076] Optionally, the distance between the two side edges C gradually increases and then gradually decreases along the direction from the second end b to the first end a (as shown in Figure 7 、 Figure 9 、 Figure 10 、 Figure 13 and Figure 14 . It can be understood that the shape of the side edge C can be one or more wave shapes, or a broken line shape.

[0077] Optionally, the distance between the two side edges C is the same along the direction from the second end b to the first end a (as shown in Figure 11 and Figure 12 .

[0078] It can be understood that the shape of the side edge C, the distance between the two side edges C, the shape of the first end edge A, the shape of the second end edge B, and the size relationship between the maximum width of the first end a and the maximum width of the second end b are designed according to the needs, as long as the vortex is avoided on the side where the first end a is located.

[0079] Optionally, the cross-sectional shape of the atomization part 1411 is an axisymmetric figure (as shown in Figures 7 to 14 . Figure 2In the embodiment, the airflow flows from both sides of the atomization part 1411, by setting the cross-sectional shape of the atomization part 1411 as an axisymmetric figure, the aerosol transmission efficiency of both sides of the atomization part 1411 is basically consistent while avoiding the formation of vortex on the side where the first end a is located, avoiding the formation of suction liquid leakage on one side of the atomization part 1411, and facilitating the concentration of aerosol distribution.

[0080] Optionally, the ratio of the maximum width to the maximum length of the cross-sectional shape of the atomization part 1411 is 1:3-1:5. Among them, the dimension of the cross-sectional shape of the atomization part 1411 along the direction parallel to the airflow direction is defined as the length, and the dimension of the cross-sectional shape of the atomization part 1411 along the direction perpendicular to the airflow direction is defined as the width. By this setting, the airflow slows down in the process of flowing from the side where the second end b is located to the side where the first end a is located, avoiding the airflow flowing away from the surface of the side where the first end a is located.

[0081] Optionally, the ratio of the center width to the maximum length of the cross-sectional shape of the atomization part 1411 is 1:3-1:4. Among them, the width of the cross-sectional shape of the atomization part 1411 passing through its geometric center is defined as the center width.

[0082] By setting the atomization part 1411 as above, the number of turns of the heating wire 142 arranged on the surface of the atomization part 1411 is less, and the heat generated by the heating wire 142 is more concentrated, which optimizes the temperature field distribution and facilitates to improve the atomization efficiency. Among them, compared with the cylindrical porous matrix, the atomization part 1411 of the porous matrix 141 in the present application has a longer circumference under the same cross-sectional area; when the heating wire arranged on the surface of the cylindrical porous matrix and the heating wire 142 in the present application have the same material, the same resistance, and the same cross-sectional area, the length of the heating wire 142 is necessarily the same, and under the premise that the circumference of the atomization part 1411 in the present application is longer, the number of turns of the heating wire 142 is less.

[0083] Along the direction perpendicular to the axis of the porous matrix 141, the cross-sectional shape of the non-atomization part 1412 is circular, so that the non-atomization part 1412 can completely block the liquid outlet 120, increase the liquid storage capacity of the non-atomization part 1412, and ensure sufficient liquid supply to the heating wire 142 by the atomization part 1411.

[0084] Continuing to refer to Figure 6 The porous matrix 141 further includes a transition part 1413 connecting the atomization part 1411 and the non-atomization part 1412. The outer surface of the transition part 1413 is a slope, and along the direction parallel to the airflow, the cross-sectional shape of one end is circular and connected with the non-atomization part 1412; the other end is flat and connected with the atomization part 1411.

[0085] The heating assembly 14 further comprises a positive electrode lead 143 and a negative electrode lead 144 arranged at the end of the heating wire 142, and the heating wire 142 is electrically connected to the host 2 through the positive electrode lead 143 and the negative electrode lead 144.

[0086] The above is only the embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or directly or indirectly applied to other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A heating element, characterized in that, include: A porous substrate includes an atomizing portion and non-atomizing portions located on both sides of the atomizing portion; the porous substrate also includes a transition portion connecting the atomizing portion and the non-atomizing portion; A heating wire is disposed in the atomizing section of the porous substrate; In particular, along the direction perpendicular to the axis of the porous substrate, the width of the cross-sectional shape of the atomizing part gradually increases and then gradually decreases in the length direction, and the maximum length of the cross-sectional shape of the atomizing part is greater than the maximum width of the cross-sectional shape of the atomizing part.

2. The heating component according to claim 1, characterized in that, The width of the cross-sectional shape of the atomizing part gradually increases in the length direction to a maximum width and then gradually decreases.

3. The heating component according to claim 1, characterized in that, The width of the cross-sectional shape of the atomizing part gradually increases and then gradually decreases multiple times along the length direction.

4. The heating component according to claim 1, characterized in that, The cross-sectional shape of the atomizing part is streamlined.

5. The heating component according to claim 1, characterized in that, The atomizing section is formed by flattening a section of the cylindrical porous substrate.

6. The heating component according to claim 1, characterized in that, The cross-sectional shape of the atomizing part includes a first end and a second end, wherein the maximum width of the first end is less than the maximum width of the second end.

7. The heating element according to claim 6, characterized in that, The cross-sectional shape of the atomizing part includes two sides extending from the second end to the first end, and the sides are straight lines, curves, or broken lines.

8. The heating element according to claim 7, characterized in that, Along the direction from the second end to the first end, the distance between the two sides gradually decreases, or first gradually increases and then gradually decreases, or remains the same.

9. The heating component according to claim 1, characterized in that, The ratio of the maximum width to the maximum length of the cross-sectional shape of the atomizing part is 1:3 to 1:

5.

10. The heating component according to claim 1, characterized in that, The cross-sectional shape of the atomizing part is an axisymmetric figure.

11. The heating component according to claim 1, characterized in that, Along the direction perpendicular to the axis of the porous substrate, the cross-sectional shape of the non-atomizing part is circular.

12. The heating component according to claim 1, characterized in that, The porous substrate is a cotton core or porous ceramic.

13. An atomizer, characterized in that, include: Airflow channel; A heating element, wherein the heating element is the heating element according to any one of claims 1-12; at least the atomizing part of the heating element is located in the airflow channel; the axial direction of the heating element is perpendicular to the airflow direction in the airflow channel, and the airflow in the airflow channel flows from the side where the second end is located to the side where the first end is located.

14. The atomizer according to claim 13, characterized in that, Only the atomizing part of the heating element is located within the airflow channel.

15. The atomizer according to claim 13, characterized in that, The non-atomizing part is disposed in the opening of the side wall of the airflow channel and outside the airflow channel.

16. An electronic atomizing device, characterized in that, include: An atomizer for storing and atomizing an aerosol generation matrix; said atomizer is the atomizer according to any one of claims 13-15; The host is used to provide energy to the atomizer and control the atomizer to generate aerosol matrix.

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