Atomizing core and aerosol-forming device

Abstract

The utility model provides an atomizing core and an aerosol forming device. The atomizing core comprises a porous matrix, a heating net and at least three electrodes. The porous base body is provided with an air channel penetrating through the two opposite ends, the heating net is arranged on the inner wall of the porous base body and at least partially located in the air channel, and the heating net is provided with an opening penetrating in the axial direction of the heating net. The at least three electrodes divide the heating net into at least two sub-heating nets which can be independently controlled, one electrode is a common electrode and is located in the middle area of the heating net, the other two electrodes are located on the two opposite sides of the opening respectively, and the included angle between the other two electrodes and the center of the heating net ranges from 10 degrees to 70 degrees. The included angle between the other two electrodes and the center of the heating net is 10-70 degrees, so that the heating area of the heating net can be increased, the explosive power of the atomizing core during heating and atomizing is improved, the amount of generated aerosol is increased, the problem of short circuit can be avoided, and the safety performance of the atomizing core is effectively improved.

Description

Technical Field

[0001] The present application belongs to the technical field of atomizer cores, and specifically relates to atomizer cores and aerosol forming devices. Background Art

[0002] The atomizer core is mainly used to heat and atomize the aerosol substrate to make it an aerosol for users to inhale or use. However, the current atomizer core does not have enough explosive power when heating and atomizing, resulting in insufficient aerosol volume, which reduces the user's smoking experience. Utility Model Content

[0003] In view of this, the first aspect of the present application provides an atomizer core, comprising:

[0004] A porous substrate, wherein the porous substrate is provided with air passages extending through opposite ends thereof;

[0005] A heating net, the heating net is arranged on the inner wall of the porous substrate and at least partially located in the air passage, and the heating net has an opening penetrating along the axial direction thereof;

[0006] At least three electrodes, the at least three electrodes separate the heating network into at least two independently controllable sub-heating networks, one of the electrodes is a common electrode and is located in the middle area of ​​the heating network, and the other two electrodes are respectively located on opposite sides of the opening and the angle between the two electrodes relative to the center of the heating network is 10°-70°.

[0007] The atomizer core provided in the first aspect of the present application, the heating net is arranged on the inner wall of the porous matrix and can be used to heat and atomize the aerosol substrate conducted from the outer wall of the porous matrix to the inner wall, so that it is atomized into an aerosol. The heating component is composed of a heating net and three electrodes, wherein the heating net is in an arc shape along the circumferential direction, which can be better arranged in the airway and increase the heating area of ​​the heating net. The heating net has an opening that runs through it axially to prevent the heating net from short-circuiting. And at least one of the three electrodes is located in the middle area of ​​the heating net, and the other two are located at both ends of the heating net, forming a dual-electrode structure to separate the heating net into at least two sub-heating nets that can be independently controlled.

[0008] In addition, this embodiment can make the angle between the other two electrodes relative to the center of the heating network 10°-70°, avoiding the arrangement angle being too large, such as greater than 70°, so that the arc angle of the heating network is smaller, the heating area of ​​the heating network is smaller, and then the explosive force of the atomizer core when heating and atomizing is insufficient, and the amount of aerosol generated is insufficient. It is also possible to avoid the arrangement angle being too small, such as less than 10°, so that the distance between the two opposite ends of the heating network is small, which is easy to cause a short circuit.

[0009] In summary, the present application increases the heating area of ​​the heating net, thereby improving the explosive power of the atomizer core during heating and atomization, and increasing the amount of aerosol generated, by making the angle between the other two electrodes relative to the center of the heating net 10°-70°, and can also avoid the problem of short circuit, thereby effectively improving the safety performance of the atomizer core.

[0010] The angle between the common electrode and the electrode on one side of the opening relative to the center of the heating network is 130°-175°, and / or the angle between the common electrode and the electrode on the other side of the opening relative to the center of the heating network is 130°-175°.

[0011] The atomizer core includes three electrodes, which are a first electrode, a second electrode and a third electrode. The first electrode and the second electrode form a first sub-heating network on the heating network, and the second electrode and the third electrode form a second sub-heating network on the heating network. The heating areas of the first sub-heating network and the second sub-heating network are equal.

[0012] Wherein, the heating network further includes three fixed parts, the first electrode, the second electrode and the third electrode are fixedly arranged on the three fixed parts respectively, and / or the sum of the areas of the first sub-heating network and the second sub-heating network accounts for 70%-90% of the total area of ​​the heating network.

[0013] Each of the sub-heating nets has a plurality of meshes arranged in an array, and the meshes of the sub-heating nets have different shapes.

[0014] Wherein, the atomizer core includes two heating nets, one of the two heating nets is completely buried inside the porous matrix, the other of the two heating nets is partially embedded in the porous matrix, and the other part is exposed in the airway.

[0015] Wherein, the heating net is provided with a barb extending along its axial direction, and the barb is buried inside the porous matrix.

[0016] Wherein, two ends of the heating net are substantially flush with two ends of the porous matrix.

[0017] The porosity of the porous matrix is ​​50%-60%, and the pore size of the porous matrix is ​​20 μm-25 μm.

[0018] A second aspect of the present application provides an aerosol-forming device, comprising an atomizing core as provided in the first aspect of the present application.

[0019] The aerosol forming device provided in the second aspect of the present application, by adopting the atomizer core provided in the first aspect of the present application, can increase the heating area of ​​the heating network, thereby improving the explosive power of the atomizer core during heating and atomization, and increase the amount of aerosol generated, and can also avoid the problem of short circuit, thereby effectively improving the safety performance of the atomizer core. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the implementation modes of the present application, the drawings required for use in the implementation modes of the present application will be described below.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the atomizer core in one embodiment of the present application.

[0022] Figure 2 for Figure 1 An exploded view of the atomizer core is shown.

[0023] Figure 3 It is a bottom view of a heating component in one embodiment of the present application.

[0024] Figure 4 This is a bottom view of a heating component in another embodiment of the present application.

[0025] Figure 5 This is a schematic diagram of a heating component when flattened in one embodiment of the present application.

[0026] Figure 6 In one embodiment of the present application Figure 1 A schematic cross-sectional view of the atomizer core is shown.

[0027] Figure 7 In another embodiment of the present application Figure 1 A schematic cross-sectional view of the atomizer core is shown.

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of an aerosol forming device in one embodiment of the present application.

[0029] Fig. 9 for Figure 8 An exploded view of an aerosol-forming device is shown.

[0030] Description of labels:

[0031] Atomizing core-1, aerosol forming device-2, porous matrix-10, air duct-100, inner wall-11, outer wall-12, heating component-20, heating net-21, sub-heating net-210, fixed part-211, non-fixed part-212, mesh-22, opening-23, barb-24, electrode-30, first electrode-31, second electrode-32, third electrode-33, shell-41, battery core assembly-42, nozzle-43. DETAILED DESCRIPTION

[0032] The following are preferred implementations of the present application. It should be noted that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications are also considered to be within the scope of protection of the present application.

[0033] Please refer to Figure 1-Figure 3 , Figure 1 It is a schematic diagram of the three-dimensional structure of the atomizer core in one embodiment of the present application. Figure 2 for Figure 1 An exploded view of the atomizer core is shown. Figure 3 It is a bottom view of the heating component in one embodiment of the present application. The atomizer core 1 provided in this embodiment includes a porous substrate 10, a heating net 21, and at least three electrodes 30. The porous substrate 10 is provided with an air passage 100 running through its opposite ends. The heating net 21 is arranged on the porous substrate 10 and at least partially located in the air passage 100. The heating net 21 has an opening 23 running through it along its axial direction. The at least three electrodes 30 separate the heating net 21 into at least two independently controllable sub-heating nets 210, one of which is a common electrode 30 and is located in the middle area of ​​the heating net 21, and the other two electrodes 30 are respectively located on opposite sides of the opening 23 and the angle between the two relative to the center of the heating net 21 is 10°-70°.

[0034] The atomizer core 1 provided in this embodiment includes a porous matrix 10 and a heating component 20, and the porous matrix 10 is provided with an air channel 100 running through its opposite ends. The heating component 20 is arranged on the inner wall 11 in the air channel 100, and the heating component 20 includes a heating net 21, and a first electrode 31, a second electrode 32, and a third electrode 33 fixed in sequence along the circumferential direction of the heating net 21, and the first electrode 31 and the third electrode 33 are close to the opposite ends of the heating net 21; the first electrode 31 and the third electrode 33 are both used to connect the first pole of the battery component 42, and the second electrode 32 is used to connect the second pole of the battery component 42, and one of the first pole and the second pole is a positive pole, and the other is a negative pole. Along the circumferential direction of the heating net 21, the heating net 21 is in an arc shape and the opposite ends of the heating net 21 are spaced apart, and the arrangement angle between the first electrode 31 and the third electrode 33 is 10°-70°.

[0035] The atomizer core 1 is one of the important components of the aerosol forming device 2. The atomizer core 1 is mainly used to heat the liquid aerosol substrate and atomize it into a mist-like aerosol. This process is mainly a physical change. Optionally, the aerosol substrate includes but is not limited to cigarette oil and various liquids. This embodiment and the following text only schematically illustrate the aerosol substrate as cigarette oil. At this time, the aerosol formed by the cigarette oil can be called smoke.

[0036] The atomizer core 1 includes a porous matrix 10 and a heating component 20, wherein the porous matrix 10 is used to conduct the aerosol substrate and provide a mounting base for the heating component 20. Along the longitudinal direction of the porous matrix 10, i.e., along the height direction of the porous matrix 10, the porous matrix 10 is provided with an air passage 100 that passes through the opposite ends, i.e., the interior of the porous matrix 10 is hollow, so as to form an air passage 100 for aerosol circulation. Therefore, the atomizer core 1 has an inner wall 11 that surrounds and forms the air passage 100, and the atomizer core 1 itself also has an outer wall 12, which is used to contact the aerosol substrate, so the outer wall 12 can also be called a liquid absorption wall, and the aerosol substrate is gradually conducted from the outer wall 12 to the inner wall 11, so as to be heated and atomized by the heating component 20 that is subsequently arranged on the inner wall 11, so the inner wall 11 can also be called an atomization wall. Optionally, the porous substrate 10 includes but is not limited to liquid-absorbing cotton, porous ceramics, porous metals, porous glass or other porous structures that can absorb liquid matrices. This embodiment and the following only schematically illustrate the porous substrate 10 as porous ceramics.

[0037] From the above content, it can be seen that the current ceramic core has insufficient explosive power during heating and atomization, resulting in insufficient aerosol production. This embodiment provides a new heating component 20. The heating component 20 includes a heating net 21 and at least three electrodes 30: a first electrode 31, a second electrode 32, and a third electrode 33. The heating net 21 is arranged on the inner wall 11 of the porous substrate 10, and is mainly used to heat and atomize the aerosol substrate. In this embodiment, the heating net 21 is arc-shaped along the circumferential direction, which can not only better adapt to the shape of the airway 100, but also can be better arranged in the airway 100 and increase the heating area of ​​the heating net 21. And the heating net 21 is not surrounded by a complete circle, but an arc with an opening 23 running through it along its axial direction, so as to avoid the contact between the opposite ends of the heating net 21 and cause the heating net 21 to short-circuit.

[0038] One end of the electrode 30 is fixed to the heating net 21, and the other end extends out of the airway 100 for subsequent electrical connection to the battery cell assembly 42, so that the heating net 21 generates heat. In this embodiment, the first electrode 31, the second electrode 32, and the third electrode 33 can be fixed on the heating net 21 in sequence along the circumferential direction of the heating net 21. The first electrode 31 and the third electrode 33 are close to the opposite ends of the heating net 21, that is, the first electrode 31 and the third electrode 33 are respectively located on both sides of the edge of the heating net 21, and because the heating net 21 is in an arc shape, the first electrode 31 and the third electrode 33 are close to each other, and the second electrode 32 is located in the middle area of ​​the heating net 21. In other words, along the circumferential direction of the heating net 21 are the first electrode 31, the second electrode 32, and the third electrode 33. Among them, "close" can be understood as the first electrode 31 and the third electrode 33 can be directly arranged on the ends of the opposite ends of the heating net 21, or the first electrode 31 and the third electrode 33 have a certain gap with the ends of the opposite ends of the heating net 21, and are not directly arranged on the ends.

[0039] And the first electrode 31 and the third electrode 33 are both used to connect the first pole of the battery cell assembly 42, and the second electrode 32 is used to connect the second pole of the battery cell assembly 42, and one of the first pole and the second pole is a positive pole, and the other is a negative pole. In other words, the polarity of the first electrode 31 and the third electrode 33 is the same, but the polarity of the second electrode 32 is opposite, and the second electrode 32 can be used as a common electrode 30, that is, one of the electrodes 30 is a common electrode 30 and is located in the middle area of ​​the heating network 21, and the other two electrodes 30 are respectively located on opposite sides of the opening 23. For example, when the first electrode 31 and the third electrode 33 are connected to the positive pole, the second electrode 32 is connected to the negative pole. When the first electrode 31 and the third electrode 33 are connected to the negative pole, the second electrode 32 is connected to the positive pole. At this time, the first electrode 31, the second electrode 32, and the third electrode 33 separate the heating network 21 into two independently controllable sub-heating networks 210, and the first sub-heating network 210 is fixed with the first electrode 31 and the second electrode 32, and the positive pole and the negative pole are connected respectively later. The second sub-heating net 210 is fixed with a second electrode 32 and a third electrode 33, which are subsequently connected to the positive electrode and the negative electrode, respectively, to form a dual-electrode 30 structure. Optionally, although the first electrode 31 and the third electrode 33 are both electrically connected to the first level of the battery core assembly 42, they can be connected to the same first pole, and the two sub-heating nets 210 generate heat at the same time. Or the first electrode 31 and the third electrode 33 are connected to different first poles, and the two sub-heating nets 210 can control the heating time and related parameters of the heating respectively. At this time, the atomizer core 1 can also be called a double-fired atomizer core 1, and the two sub-heating nets 210 can be alternately controlled and used, thereby improving the service life of the heating component 20.

[0040] The above content can also be understood as, the first electrode 31 and the second electrode 32 form a first sub-heating net on the heating net 21, the second electrode 32 and the third electrode 33 form a second sub-heating net on the heating net 21, and the heating areas of the first sub-heating net and the second sub-heating net are equal, so as to facilitate the control of the heating parameters of the two sub-heating nets 210. And the equal areas of the two sub-heating nets 210 can ensure equal power, thereby ensuring equal heating temperature, and further ensuring that the taste of the aerosol generated by atomization when the two sub-heating nets 210 are alternately controlled remains consistent.

[0041] In this embodiment, the heating net 21 is in an arc shape, that is, the heating net 21 is not surrounded by a circle, but an arc shape. Because the first electrode 31 and the third electrode 33 are close to the opposite ends of the heating net 21, the overall size and area of ​​the heating net 21 can be adjusted by controlling the angle between the first electrode 31 and the third electrode 33 relative to the center of the heating net 21 when the radius of the arc remains unchanged. When the angle between the first electrode 31 and the third electrode 33 relative to the center of the heating net 21 is smaller, for example, the angle between the first electrode 31 and the third electrode 33 relative to the center of the heating net 21 is less than 10°, the area of ​​the heating net 21 is also larger, thereby increasing the explosive force during heating and atomization and increasing the amount of aerosol generated. However, when the angle between the first electrode 31 and the third electrode 33 relative to the center of the heating net 21 is too small, it is easy to cause contact short circuit phenomenon at both ends of the heating net 21 during subsequent installation and use, and the defect rate is high during mass production, affecting work efficiency. At this time, the angle between the first electrode 31 and the third electrode 33 relative to the center of the heating net 21 can also be called a safe angle. However, the angle between the first electrode 31 and the third electrode 33 relative to the center of the heating net 21 cannot be too large. For example, the angle between the first electrode 31 and the third electrode 33 relative to the center of the heating net 21 is greater than 70°, which makes the arc angle of the heating net 21 smaller. The area of ​​the heating net 21 is too small, which will reduce the efficiency of heating and atomization, thereby resulting in insufficient explosive power of the atomization core 1 during heating and atomization, insufficient amount of aerosol generated, and poor taste results, which cannot effectively solve the above problems. The arrangement angle can also be understood as the angle between the first electrode 31 and the third electrode 33 relative to the center of the heating net 21. Therefore, the above content can also be understood as the angle between the other two electrodes 30 relative to the center of the heating net 21 is 10°-70°.

[0042] In summary, in this embodiment, the angle between the other two electrodes 30 and the center of the heating network 21 (such as Figure 3The angle ∠A shown in the figure is 10°-70°, which can increase the heating area of ​​the heating net 21, thereby increasing the explosive force of the atomizer core 1 when it is heated and atomized, and increase the amount of aerosol generated, so that users can get the best taste experience. It can also avoid the problem of short circuit and effectively improve the safety performance of the atomizer core 1.

[0043] Optionally, the angle between the first electrode 31 and the third electrode 33 relative to the center of the heating network 21 may be 10°, 20°, 30°, 40°, 50°, 60°, or 70°.

[0044] Please refer to Figure 3-Figure 4 , Figure 4 It is a bottom view of a heating component in another embodiment of the present application. In this embodiment, the first electrode 31 is disposed at an end of one end of the heating net 21 , or there is a gap between the first electrode 31 and an end of one end of the heating net 21 .

[0045] The first electrode 31 can be directly disposed on the end of one end of the heating net 21, that is, the first electrode 31 is disposed close to one end of the heating net 21, so that the size of the heating net 21 can be better controlled by controlling the angle between the first electrode 31 and the third electrode 33 relative to the center of the heating net 21. Alternatively, the first electrode 31 is not directly disposed on the end of one end of the heating net 21, but has a certain gap with the end of one end of the heating net 21, so that the difficulty of preparing the first electrode 31 when it is fixed to one end of the heating net 21 can be reduced. This embodiment is only schematically described with a certain gap between the first electrode 31 and the end of one end of the heating net 21.

[0046] In this embodiment, the second electrode 32 is disposed at the end of the other end of the heating net 21 , or there is a gap between the second electrode 32 and the end of the other end of the heating net 21 .

[0047] The second electrode 32 can be directly disposed on the end of the other end of the heating net 21, that is, the second electrode 32 is disposed close to the other end of the heating net 21, so that the size of the heating net 21 can be better controlled by controlling the angle between the first electrode 31 and the third electrode 33 relative to the center of the heating net 21. Alternatively, the second electrode 32 is not directly disposed on the end of the other end of the heating net 21, but has a certain gap with the end of the other end of the heating net 21, so that the difficulty of preparing the second electrode 32 when it is fixed to the other end of the heating net 21 can be reduced. This embodiment is only schematically described with a certain gap between the second electrode 32 and the end of the other end of the heating net 21.

[0048] Please refer again Figure 3In this embodiment, the angle between the first electrode 31 and the second electrode 32 relative to the center of the heating network 21 and the angle between the second electrode 32 and the third electrode 33 relative to the center of the heating network 21 are equal or unequal, and the sum of the angle between the first electrode 31 and the third electrode 33 relative to the center of the heating network 21, the angle between the first electrode 31 and the second electrode 32 relative to the center of the heating network 21, and the angle between the second electrode 32 and the third electrode 33 relative to the center of the heating network 21 is 360°.

[0049] Since the shape of the heating net 21 is an arc, the sum of the angles formed by the first electrode 31, the second electrode 32, and the third electrode 33 is 360°. In other words, the angle between the first electrode 31 and the third electrode 33 relative to the center of the heating net 21, the angle between the first electrode 31 and the second electrode 32 relative to the center of the heating net 21 (such as Figure 3 ∠B), and the angle between the second electrode 32 and the third electrode 33 relative to the center of the heating network 21 (as shown in Figure 3 The sum of the angles ∠C in the figure is 360°. Since the angle between the first electrode 31 and the third electrode 33 relative to the center of the heating net 21 is 10°-70°, the angle between the first electrode 31 and the second electrode 32 relative to the center of the heating net 21, and the angle between the second electrode 32 and the third electrode 33 relative to the center of the heating net 21 are determined by the angle between the first electrode 31 and the third electrode 33. For example, the sum of the angle between the first electrode 31 and the second electrode 32 relative to the center of the heating net 21, and the angle between the second electrode 32 and the third electrode 33 relative to the center of the heating net 21 is 290°-350°.

[0050] As for the angle between the first electrode 31 and the second electrode 32 relative to the center of the heating net 21 and the angle between the second electrode 32 and the third electrode 33 relative to the center of the heating net 21, they can be equal or unequal, and can be set by adjusting the position of the second electrode 32. In this embodiment, the angle between the first electrode 31 and the second electrode 32 relative to the center of the heating net 21 and the angle between the second electrode 32 and the third electrode 33 relative to the center of the heating net 21 are equal for schematic illustration. At this time, the angle between the first electrode 31 and the second electrode 32 relative to the center of the heating net 21 and the angle between the second electrode 32 and the third electrode 33 relative to the center of the heating net 21 are both 130°-175°, which can simplify the structure and make the heating areas of the two sub-heating nets 210 the same. Of course, in other embodiments, if the heating areas of the two sub-heating nets 210 need to be different, the angle between the first electrode 31 and the second electrode 32 relative to the center of the heating net 21 and the angle between the second electrode 32 and the third electrode 33 relative to the center of the heating net 21 can be adjusted by adjusting the position of the second electrode 32, so that the heating areas of the two sub-heating nets 210 are different. The above content can also be understood as the angle between the common electrode 30 and the electrode 30 located on one side of the opening 23 relative to the center of the heating net 21 is 130°-175°, and / or the angle between the common electrode 30 and the electrode 30 located on the other side of the opening 23 relative to the center of the heating net 21 is 130°-175°.

[0051] Optionally, the angle between the first electrode 31 and the second electrode 32 relative to the center of the heating network 21 and the angle between the second electrode 32 and the third electrode 33 relative to the center of the heating network 21 can be 130°, 140°, 150°, 160°, 170°, or 175°.

[0052] Please refer to Figure 5 , Figure 5 It is a schematic diagram of a heating component in an embodiment of the present application when it is flattened. In this embodiment, the heating net 21 includes three fixed parts 211 and two non-fixed parts 212, each of the non-fixed parts 212 is arranged between two adjacent fixed parts 211, and the three fixed parts 211 are used to fix the first electrode 31, the second electrode 32, and the third electrode 33 respectively; and / or, the sum of the areas of the two non-fixed parts 212 accounts for 70%-90% of the total area of ​​the heating net 21. In other words, the heating net 21 also includes three fixed parts 211, the first electrode 31, the second electrode 32 and the third electrode 33 are fixedly arranged on the three fixed parts 211 respectively, and / or, the sum of the areas of the first sub-heating net and the second sub-heating net accounts for 70%-90% of the total area of ​​the heating net 21.

[0053] The heating net 21 can be divided into a fixed portion 211 and a non-fixed portion 212, wherein the fixed portion 211 is used to fix various electrodes 30, and the non-fixed portion 212 is a portion where the electrode 30 is not fixed. The heating net 21 can include three fixed portions 211 and two non-fixed portions 212, each non-fixed portion 212 is arranged between two adjacent fixed portions 211, in other words, the non-fixed portion 212 is the two sub-heating nets 210 mentioned above: the first sub-heating net and the second sub-heating net. Since the electrode 30 has a certain width, the fixed portion 211 will also have a certain width accordingly. In this embodiment, the sum of the areas of the two non-fixed portions 212, i.e., the sum of the areas of the first sub-heating net and the second sub-heating net, accounts for 70%-90% of the total area of ​​the heating net 21, which can avoid the sum of the areas of the two non-fixed portions 212 being too large, thereby causing the area of ​​the fixed portion 211 to be too small and unable to fix the electrode 30. It can also prevent the sum of the areas of the two non-fixed portions 212 from being too small, thereby reducing the area of ​​the sub-heating network 210 and reducing the heating efficiency.

[0054] Optionally, the sum of the areas of the first sub-heating net and the second sub-heating net accounts for 70%, 75%, 80%, 85% or 90% of the total area of ​​the heating net 21 .

[0055] In this embodiment, along the extension direction of the heating net 21, the first electrode 31 is fixed at the position of 0-10% in the heating net 21, the second electrode 32 is fixed at the position of 45%-55% in the heating net 21, and the third electrode 33 is fixed at the position of 90%-100% in the heating net 21.

[0056] Regarding the specific positions of the first electrode 31, the second electrode 32, and the third electrode 33 on the heating net 21, the first electrode 31 can be fixed at the position of 0-10% of the heating net 21 along the extension direction of the heating net 21, that is, along the circumferential direction of the heating net 21. When the first electrode 31 is fixed at the position of 0% in the heating net 21, that is, the first electrode 31 is set at the end of one end of the heating net 21, and the rest of the cases are that the first electrode 31 and the end of one end of the heating net 21 have a certain gap. The second electrode 32 can be fixed at the position of 45%-55% in the heating net 21, that is, the second electrode 32 can be fixed in the middle area of ​​the heating net 21. The third electrode 33 is fixed at the position of 90%-100% of the heating net 21. When the third electrode 33 is fixed at the position of 100% in the heating net 21, that is, the third electrode 33 is set at the end of the other end of the heating net 21, and the rest of the cases are that the third electrode 33 and the end of the other end of the heating net 21 have a certain gap.

[0057] Optionally, the first electrode 31 is fixed at 0%, 2%, 4%, 6%, 8%, 10% of the heating net 21. The second electrode 32 is fixed at 45%, 47%, 49%, 50%, 51%, 53%, 55% of the heating net 21. The third electrode 33 is fixed at 90%, 92%, 94%, 96%, 98%, 100% of the heating net 21.

[0058] In this embodiment, each of the sub-heating nets 210 has a plurality of meshes 22 arranged in an array, and the meshes 22 of each of the sub-heating nets 210 have different shapes. A mesh 22 may be provided on each sub-heating net 210 to increase the contact area between the sub-heating net 210 and the aerosol substrate, further improving the efficiency of heating atomization. The shape of the mesh 22 may be a quadrilateral, a pentagon, a hexagon, an ellipse or a circle. When the meshes 22 are of different shapes, in order to ensure the best atomization effect, each mesh 22 of different shapes has specific parameters such as angle, length and width, which may be selected and set according to actual needs.

[0059] Optionally, when the heating net 21 includes two sub-heating nets 210, the shapes of the meshes 22 of the two sub-heating nets 210 can be different, resulting in different heating areas and different heating powers, thereby forming different temperature fields, which can further stimulate different characteristics of the aerosol substrate, such as fragrance and sweetness. For example, the mesh 22 of one sub-heating net 210 is hexagonal in shape, and the mesh 22 of the other sub-heating net 210 is elliptical in shape, etc. Of course, in other embodiments, the shapes of the meshes 22 of the two sub-heating nets 210 can be the same. This embodiment is only schematically illustrated by the same shape of the meshes 22 of the two sub-heating nets 210.

[0060] Please refer to Figure 6 , Figure 6 In one embodiment of the present application Figure 1 The cross-sectional schematic diagram of the atomizer core is shown. In this embodiment, the atomizer core 1 includes two heating nets 21, one of the two heating nets 21 is completely buried in the porous matrix 10, so as to preheat the e-liquid. At this time, the heating net 21 can also be called a preheating net. Another part of the two heating nets 21 is embedded in the porous matrix 10, and the other part is exposed in the airway 100, so as to atomize the e-liquid and further improve the atomization effect. Optionally, the heating temperature of the heating net 21 completely buried in the porous matrix 10 is lower than the heating temperature of the heating net 21 partially embedded in the porous matrix 10.

[0061] Please refer to Figure 7 , Figure 7 In another embodiment of the present application Figure 1In this embodiment, the heating net 21 is provided with a barb 24 extending along its axial direction, and the barb 24 is embedded in the porous matrix 10, thereby further strengthening the bonding strength between the heating component 20 and the porous matrix 10, and preventing the heating component 20 from easily falling off the porous matrix 10. Optionally, the bending angle of the barb 24 structure is 90°-150°.

[0062] In this embodiment, the two ends of the heating net 21 are roughly flush with the two ends of the porous matrix 10, thereby increasing the size of the heating net 21 in the axial direction, thereby increasing the area of ​​the heating net 21 and improving the atomization effect. It is worth noting that the above-mentioned roughly flush can mean that the two ends of the heating net 21 are flush with the two ends of the porous matrix 10, or that there is a certain distance between the two ends of the heating net 21 and the two ends of the porous matrix 10, for example, the height of the heating net 21 in the axial direction is more than 90% of the height of the porous matrix 10. The above content can also be understood as the two ends of the heating net 21 cannot exceed the porous matrix 10, resulting in energy waste and increasing the difficulty of preparation and assembly.

[0063] In this embodiment, the porosity of the porous matrix 10 is 50%-60%, and the pore size of the porous matrix 10 is 20μm-25μm. The interior of the porous matrix 10 is not completely dense and tight, but has a plurality of holes, and the plurality of holes are interconnected to form liquid conduction channels. It is through these liquid conduction channels that the aerosol substrate can be transferred from the outer wall 12 of the porous matrix 10 to the inner wall 11 of the porous matrix 10. Therefore, this embodiment can control the speed of liquid conduction by controlling the porosity and pore size of the porous matrix 10. When the porosity and pore size of the porous matrix 10 are too small, for example, when the porosity of the porous matrix 10 is less than 50% and the pore size is less than 20μm, the liquid conduction speed will be too slow, resulting in insufficient aerosol substrate on the inner wall 11, which will lead to core sticking. When the porosity and pore size of the porous matrix 10 are too large, for example, when the porosity of the porous matrix 10 is greater than 60% and the pore size is greater than 25 μm, the liquid conduction speed will be too fast, and there will be too much aerosol substrate on the inner wall 11, thus causing oil leakage. In addition, excessive porosity and pore size of the porous matrix 10 will also reduce the structural strength of the porous matrix 10.

[0064] In summary, this embodiment makes the porosity of the porous matrix 10 50%-60% and the pore size of the porous matrix 10 20μm-25μm, which can not only obtain a faster liquid conduction speed without oil leakage, but also make the porous matrix 10 have sufficient structural strength.

[0065] Optionally, the porosity of the porous matrix 10 may be 50%, 52%, 54%, 56%, 58%, or 60%. The pore size of the porous matrix 10 may be 20 μm, 21 μm, 22 μm, 23 μm, 24 μm, or 25 μm.

[0066] Please refer to Figure 8-Figure 9 , Figure 8 It is a schematic diagram of the three-dimensional structure of an aerosol forming device in one embodiment of the present application. Fig. 9 for Figure 6 The exploded view of the aerosol forming device is shown. This embodiment also provides an aerosol forming device 2, and the aerosol forming device 2 includes the atomizing core 1 provided in the above embodiment of the present application.

[0067] The aerosol forming device 2 is a device that can form an aerosol for the user to inhale or use. The aerosol forming device 2 mainly includes a housing 41, a battery assembly 42, and an atomizer core 1 provided in the above embodiment of the present application. The housing 41 is mainly used to install the battery assembly 42 and the atomizer core 1, and the housing 41 also has an oil storage tank for storing aerosol substrates. The aerosol substrates in the oil storage tank can be transferred to the porous matrix 10 of the atomizer core 1 and transferred from the outer wall 12 to the inner wall 11. The battery assembly 42 is electrically connected to the heating assembly 20 in the atomizer core 1 to provide energy to the heating assembly 20, so that the heating assembly 20 heats and atomizes the aerosol substrate on the inner wall 11, converting it into an aerosol, and finally discharged to the outside of the aerosol forming device 2 through the suction nozzle 43.

[0068] The aerosol forming device 2 provided in this embodiment, by adopting the atomizer core 1 provided in the above-mentioned embodiment of the present application, can increase the heating area of ​​the heating network 21, thereby improving the explosive power of the atomizer core 1 when heating and atomizing, and increase the amount of aerosol generated, and can also avoid the problem of short circuit, thereby effectively improving the safety performance of the atomizer core 1.

[0069] In addition, this application also conducted tests on smoke volume and taste, the specific contents are as follows:

[0070] Smoke volume test method: install the atomizer core 1 into the aerosol forming device 2 in a fully charged and full-liquid state. At this time, weigh the fully charged and full-liquid aerosol forming device 2 to obtain the weight data and record it. Then put the weighed aerosol forming device 2 on the smoking test device to set the required number of puffs. When the number of puffs is completed, stop the smoking device, and further weigh and record the aerosol forming device 2 that has completed the specified number of puffs. At this time, the weight of the aerosol forming device 2 before and after puffing is obtained, and the smoke volume data per puff is calculated. The calculation method is as follows: (weight before puffing - weight after puffing) / number of puffs * 1000 = smoke volume (TPM, mg / puff, milligrams / puff).

[0071] Taste evaluation instructions: The taste evaluation is based on poor → poor → better → good → excellent, from left to right.

[0072] Next, the present application produced 7 sets of embodiments with different angles between the first electrode 31 and the third electrode 33, and obtained the smoke volume and inhalation taste results, as shown in Table 1.

[0073] Table 1 Smoke volume and inhalation taste results at different angles between the first electrode and the third electrode

[0074]

[0075] Subsequently, the present applicant produced three sets of comparison ratios of different angles between the first electrode 31 and the third electrode 33, and obtained the smoke volume and the inhalation taste results, as shown in Table 2.

[0076] Table 2 Smoke volume and inhalation taste results at different angles between the first electrode and the third electrode

[0077]

[0078] The above data show that the taste is best when the angle between the first electrode 31 and the third electrode 33 relative to the center of the heating net 21 is 10°-70°, and the aerosol volume, i.e., the smoke volume, is 10mg / puff-16mg / puff. The angle between the first electrode 31 and the second electrode 32 relative to the center of the heating net 21 and the angle between the second electrode 32 and the third electrode 33 relative to the center of the heating net 21 are symmetrical, so that the angle between the first electrode 31 and the second electrode 32 relative to the center of the heating net 21 is 130°-175°, and the angle between the second electrode 32 and the third electrode 33 relative to the center of the heating net 21 is 130°-175°.

[0079] Optionally, when the aerosol forming device 2 is working, the amount of aerosol generated is 10 mg / puff, 11 mg / puff, 12 mg / puff, 13 mg / puff, 14 mg / puff, 15 mg / puff, or 16 mg / puff.

[0080] In the description of the present application, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0081] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0082] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated. It can be mechanically connected or electrically connected. It can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0083] The above describes the contents provided by the implementation methods of the present application in detail, and describes and illustrates the principles and implementation methods of the present application. These descriptions are only used to help understand the method and its core ideas of the present application. However, the contents of this specification should not be construed as limiting the present application, and those skilled in the art may make various changes and modifications to the present application without departing from the spirit and scope of the present application. These modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents.

Claims

1. An atomizer core, characterized in that: include: A porous substrate, wherein the porous substrate is provided with air passages extending through opposite ends thereof; A heating net, the heating net is arranged on the inner wall of the porous substrate and at least partially located in the air passage, and the heating net has an opening penetrating along the axial direction thereof; At least three electrodes, the at least three electrodes separate the heating network into at least two independently controllable sub-heating networks, one of the electrodes is a common electrode and is located in the middle area of ​​the heating network, and the other two electrodes are respectively located on opposite sides of the opening and the angle between the two electrodes relative to the center of the heating network is 10°-70°.

2. The atomizer core according to claim 1, characterized in that: The angle between the common electrode and the electrode located on one side of the opening relative to the center of the heating network is 130°-175°, and / or the angle between the common electrode and the electrode located on the other side of the opening relative to the center of the heating network is 130°-175°.

3. The atomizer core according to claim 1, characterized in that: The atomizer core includes three electrodes, which are a first electrode, a second electrode and a third electrode. The first electrode and the second electrode form a first sub-heating network on the heating network, and the second electrode and the third electrode form a second sub-heating network on the heating network, and the heating areas of the first sub-heating network and the second sub-heating network are equal.

4. The atomizer core according to claim 3, characterized in that: The heating network further includes three fixing parts, the first electrode, the second electrode and the third electrode are fixedly arranged on the three fixing parts respectively, and / or the sum of the areas of the first sub-heating network and the second sub-heating network accounts for 70%-90% of the total area of ​​the heating network.

5. The atomizer core according to claim 1, characterized in that: Each of the sub-heating nets has a plurality of meshes arranged in an array, and the meshes of the sub-heating nets have different shapes.

6. The atomizer core according to claim 1, characterized in that: The atomizer core includes two heating nets, one of which is completely buried in the porous matrix, and the other of which is partially embedded in the porous matrix, and the other is exposed in the airway.

7. The atomizer core according to claim 1, characterized in that: The heating net is provided with a barb extending along its axial direction, and the barb is embedded in the interior of the porous matrix.

8. The atomizer core according to claim 1, characterized in that: The two ends of the heating net are substantially flush with the two ends of the porous matrix.

9. The atomizer core according to claim 1, characterized in that: The porosity of the porous matrix is ​​50%-60%, and the pore size of the porous matrix is ​​20 μm-25 μm.

10. An aerosol forming device, characterized in that Comprising the atomizer core according to any one of claims 1 to 9.

Images