Electronic cigarette atomizer core and preparation method thereof and electronic cigarette atomizer

Abstract

The present invention provides an electronic cigarette atomizer core, comprising a conductive heating element, on which a plurality of holes arranged at intervals are provided, each of which is filled with a porous oil-conducting material; the conductive heating element has a conductive heating function, and the cigarette oil can be atomized in the holes of the conductive heating element. The electronic cigarette atomizer core provided by the present invention has both oil-conducting and atomizing functions, which can ensure the balance of supply and demand of the cigarette oil during the electronic cigarette atomization process, and has a large atomization contact area and high atomization efficiency. The present invention also provides a method for preparing an electronic cigarette atomizer core and an electronic cigarette atomizer.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic cigarettes, and in particular to an electronic cigarette atomizer core and a preparation method thereof, and an electronic cigarette atomizer. Background Art

[0002] Electronic cigarettes, also known as virtual cigarettes, steam cigarettes, aerosol generating devices, etc., are mainly used to simulate the feeling of smoking without affecting health, for the purpose of quitting smoking or replacing cigarettes.

[0003] The electronic cigarette atomizer core is the core component of the electronic cigarette atomizer. The heating element in the electronic cigarette atomizer core is the core component of the electrothermal conversion. Its main function is to heat the smoke oil (smoke paste) to produce smoke. At present, the electronic cigarette atomizer core generally uses oil-conducting cotton and a heating net as the heating element, and the oil-conducting cotton is fitted with the heating net; when in use, the oil-conducting cotton absorbs the smoke oil and guides the smoke oil to the contact surface between the oil-conducting cotton and the heating net, and the smoke oil is atomized by the heating net. Then the oil-conducting cotton absorbs the smoke oil again and continues to atomize. This method has a small atomization contact area between the oil-conducting cotton and the heating net, and the atomization efficiency is limited, resulting in insufficient atomization. In addition, the loose fit between the oil-conducting cotton and the heating net will cause the local temperature to be too high and cause the core to be sticky. On the other hand, the oil-conducting cotton will be insufficient when conducting oil, which will also cause the core to be sticky, thereby affecting the taste of the electronic cigarette; on the contrary, if the oil is excessive and the heating element fails to be atomized in time, the electronic cigarette will leak oil. Summary of the invention

[0004] The object of the present invention is to provide an electronic cigarette atomizer core, which has both oil guiding and atomization functions, can ensure the supply and demand balance of cigarette oil during the electronic cigarette atomization process, and has a large atomization contact area and high atomization efficiency.

[0005] The present invention provides an electronic cigarette atomization core, comprising a conductive heating element, on which a plurality of holes arranged at intervals are provided, each of which is filled with a porous oil-conducting material; the conductive heating element has a conductive heating function, and the cigarette oil can be atomized in the holes of the conductive heating element.

[0006] In one feasible manner, the conductive heating element has a top surface and a bottom surface that are relatively arranged, and the hole penetrates both the top surface and the bottom surface of the conductive heating element; or, the hole penetrates the top surface of the conductive heating element, and the hole does not penetrate the bottom surface of the conductive heating element.

[0007] In one achievable manner, a connecting channel is provided on the conductive heating element, adjacent holes on the conductive heating element are connected via the connecting channel, and the porous oil-conducting material is also filled in the connecting channel.

[0008] In one achievable manner, the connecting channel includes a through hole provided in the conductive heating element and / or a groove provided on the surface of the conductive heating element, and the porous oil-conducting material is also filled in the through hole and / or the groove.

[0009] In one achievable manner, the porous oil-conducting material is a porous wood fiber material.

[0010] In one achievable manner, the conductive heating element is a porous metal conductor.

[0011] In one achievable manner, the conductive heating element is foam metal.

[0012] The present invention also provides a method for preparing an electronic cigarette atomizing core, which is used to prepare the above-mentioned electronic cigarette atomizing core. The method for preparing the electronic cigarette atomizing core comprises the following steps:

[0013] S10: preparing a porous oil-conducting slurry;

[0014] S20: providing a conductive heating element, wherein a plurality of holes are provided on the conductive heating element;

[0015] S30: Fill the porous oil-conducting slurry prepared in the above step S10 into the holes of the conductive heating element, and then solidify the porous oil-conducting slurry in the holes. The porous oil-conducting slurry in the holes forms a porous oil-conducting material after solidification, that is, an electronic cigarette atomization core is obtained.

[0016] In one achievable manner, the porous oil-conducting slurry is porous wood pulp, and the components of the porous wood pulp include wood fiber slurry, a binder and a modifier.

[0017] In one achievable manner, the step S10 specifically includes:

[0018] S101: crushing wood and sieving it to obtain wood powder, wherein the wood includes at least one of wood chips, bamboo chips, bagasse and crop straw; putting the wood powder into an alkaline solution for steaming, drying and dehydrating the wood powder, and then continuing to put the wood powder into the alkaline solution for steaming, and controlling the steam pressure during steaming to be 0.1Mpa-0.15Mpa; then ball milling the wood powder at a ball milling temperature of 130°C-140°C; finally filtering and washing the wood powder until the wood powder is neutral, so as to obtain the wood fiber slurry;

[0019] S102: Evenly mix the wood fiber slurry prepared in the above step S101 with the binder and the modifier to obtain the porous oil-conducting slurry.

[0020] In one achievable manner, the weight proportions of the components of the porous wood pulp are: 45-60 parts of the wood fiber pulp, 40-55 parts of the binder, and 2-5 parts of the modifier.

[0021] In one achievable manner, the binder is silica sol, the content of SiO2 nanoparticles in the silica sol is 20%-25%; and the modifier is a silane coupling agent.

[0022] In one achievable manner, the curing treatment of the porous oil-conducting slurry in the pores specifically includes:

[0023] The conductive heating element with the porous oil-conducting slurry filled in the pores is placed in a cold storage for freezing, and then the conductive heating element is dried at 40°C-50°C, and finally the conductive heating element is baked at 150°C-200°C, so as to solidify the porous oil-conducting slurry in the pores.

[0024] In one achievable manner, the conductive heating element is a porous metal conductor.

[0025] In one achievable manner, the conductive heating element is foam metal.

[0026] The present invention also provides an electronic cigarette atomizer, comprising the electronic cigarette atomizer core described above; the electronic cigarette atomizer also includes a shell and an oil storage body, the oil storage body and the electronic cigarette atomizer core are both arranged in the shell, an oil storage cavity is provided in the oil storage body, the oil storage cavity is located above the electronic cigarette atomizer core, an oil outlet hole connected to the oil storage cavity is provided at the bottom of the oil storage body, and the oil outlet hole is arranged corresponding to the electronic cigarette atomizer core.

[0027] In one achievable manner, the electronic cigarette atomizer further comprises a nozzle, which is located above the shell and connected to the shell; a flue is provided in the oil storage body, and the smoke generated on the electronic cigarette atomizer core can flow into the nozzle through the flue.

[0028] In one feasible manner, the electronic cigarette atomization core is a long strip structure, and the oil outlet hole includes a first oil outlet hole, a second oil outlet hole and a third oil outlet hole, the first oil outlet hole and the second oil outlet hole are respectively arranged at two ends of the electronic cigarette atomization core along its length direction, and the third oil outlet hole is arranged corresponding to the middle position of the electronic cigarette atomization core.

[0029] The electronic cigarette atomization core provided by the present invention fills the holes of the conductive heating element with porous oil-conducting material, and uses the porous oil-conducting material to replace the original oil-conducting cotton as the oil-conducting body to guide the smoke oil to the holes on the conductive heating element. At the same time, the conductive heating element has a conductive heating function, and the porous oil-conducting material is a porous structure, and the smoke oil can be atomized in each hole of the conductive heating element. There is a large atomization contact area between the porous oil-conducting material and the conductive heating element, and the atomization efficiency is high, and the oil absorption and atomization amount are large. Moreover, the electronic cigarette atomization core realizes the integration of the oil-conducting structure and the heating structure, and it has both the oil-conducting and atomization functions, which can ensure the balance of supply and demand of the smoke oil during the electronic cigarette atomization process, and the porous oil-conducting material is tightly combined with the conductive heating element, which can avoid the phenomenon of core sticking and oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the structure of the electronic cigarette atomizer in an embodiment of the present invention.

[0031] Figure 2 for Figure 1 Schematic cross-section of .

[0032] Figure 3 for Figure 1 Schematic diagram of the explosion structure.

[0033] Figure 4 for Figure 3 Bottom view of the oil reservoir.

[0034] Figure 5 for Figure 3 A magnified schematic diagram of the structure of the electronic cigarette atomization core.

[0035] Figure 6 for Figure 5 Schematic cross-section of .

[0036] Figure 7 for Figure 6 Schematic diagram of the cross section of the conductive heating element.

[0037] Figure 8 It is a cross-sectional schematic diagram of a conductive heating element in another embodiment of the present invention.

[0038] Fig. 9 It is a cross-sectional schematic diagram of a conductive heating element in another embodiment of the present invention.

[0039] Fig.10 It is a cross-sectional schematic diagram of a conductive heating element in another embodiment of the present invention. DETAILED DESCRIPTION

[0040] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0041] The terms "first", "second", "third", "fourth" and the like (if any) in the description and claims of the present invention are used to distinguish similar objects and are not necessarily used to describe a particular sequence or order.

[0042] The directional words such as up, down, left, right, front, back, top, bottom, etc. (if any) involved in the specification and claims of the present invention are defined by the positions of the structures in the drawings and the positions of the structures relative to each other, and are only for the clarity and convenience of expressing the technical solution. It should be understood that the use of directional words should not limit the scope of protection claimed in the present invention.

[0043] like Figures 5 to 7 As shown, the electronic cigarette atomizer core 1 provided by the embodiment of the present invention includes a conductive heating element 11, and the conductive heating element 11 is a porous structure, that is, a plurality of holes 111 arranged at intervals are provided on the conductive heating element 11, and each hole 111 is filled with a porous oil-conducting material 12, and the porous oil-conducting material 12 is also a porous structure. The conductive heating element 11 has a conductive heating function, and the smoke oil can be atomized in each hole 111 of the conductive heating element 11.

[0044] Specifically, this embodiment fills the hole 111 of the conductive heating element 11 with a porous oil-conducting material 12, and uses the porous oil-conducting material 12 to replace the original oil-conducting cotton as an oil-conducting body to guide the smoke oil into the hole 111 on the conductive heating element 11. At the same time, the conductive heating element 11 has a conductive heating function, and the porous oil-conducting material 12 is a porous structure. The smoke oil can be atomized in each hole 111 of the conductive heating element 11. There is a large atomization contact area between the porous oil-conducting material 12 and the conductive heating element 11, and the atomization efficiency is high. At the same time, the oil absorption and atomization amount are large. Moreover, the electronic cigarette atomization core 1 realizes the integration of the oil-conducting structure and the heating structure, and it has both the oil-conducting and atomization functions, which can ensure the balance of supply and demand of the smoke oil during the electronic cigarette atomization process, and the porous oil-conducting material 12 is tightly combined with the conductive heating element 11, which can avoid the phenomenon of core sticking and oil leakage.

[0045] As an embodiment, the porous oil-conducting material 12 is a porous wood fiber material. Since the wood fiber material itself is porous, when it is used to form the porous oil-conducting material, there is no need to add a large amount of pore-forming agent, and the manufacturing process is simple. At the same time, its raw materials are simple and easy to obtain, the cost is low, and it is green and environmentally friendly, so it is suitable for mass production.

[0046] As an implementation mode, the conductive heating element 11 is a porous metal conductor. Of course, in other embodiments, the conductive heating element 11 may also be other porous conductors, such as a porous carbon conductor.

[0047] As an implementation method, the conductive heating element 11 is a foam metal. Due to the porosity of the foam metal itself, when the foam metal is used to make the electronic cigarette atomization core 1, it is not necessary to additionally provide holes 111 on the conductive heating element 11.

[0048] like Figure 6 and Figure 7 As shown, as an embodiment, the conductive heating element 11 has a top surface 112 and a bottom surface 113 that are arranged opposite to each other, and the hole 111 is a through-hole structure, and the hole 111 penetrates both the top surface 112 and the bottom surface 113 of the conductive heating element 11 .

[0049] like Figure 8 As shown, as another embodiment, the hole 111 is a blind hole structure, the hole 111 passes through the top surface of the conductive heating element 11, and the hole 111 does not pass through the bottom surface of the conductive heating element 11, that is, the conductive heating element 11 forms a structure with an open top and a closed bottom at the position of the hole 111, so that the smoke oil can be stored in the hole 111 after entering the hole 111, thereby further avoiding the phenomenon of oil leakage.

[0050] like Fig. 9 As shown in FIG. 1 , as another embodiment, a connecting channel is further provided on the conductive heating element 11 , and adjacent holes 111 on the conductive heating element 11 are connected through the connecting channel, and the porous oil-conducting material 12 is also filled in the connecting channel. By providing the connecting channel on the conductive heating element 11 , the holes 111 can be connected to each other, which is conducive to the uniform penetration of the tobacco oil into the porous oil-conducting material 12 in each hole 111 .

[0051] like Fig. 9 As shown, as an embodiment, the connection channel includes a through hole 114 disposed in the conductive heating element 11 , adjacent holes 111 are connected through the through hole 114 , and the porous oil-conducting material 12 is also filled in the through hole 114 .

[0052] like Fig.10 As shown, as another embodiment, the connection channel includes a groove 115 disposed on the surface of the conductive heating element 11, adjacent holes 111 are connected through the groove 115, and the porous oil-conducting material 12 is also filled in the groove 115. In this embodiment, the groove 115 is disposed on the top of the conductive heating element 11 (of course, the groove 115 can also be disposed at the bottom of the conductive heating element 11), and the groove 115 is formed by the top surface 112 of the conductive heating element 11 being concave downward. Of course, in other embodiments, the connection channel can also be in other forms or structures.

[0053] As an implementation manner, the conductive heating element 11 is a porous metal conductor.

[0054] As an implementation manner, the conductive heating element 11 is foamed metal.

[0055] like Figure 1 and Figure 2 As shown, an embodiment of the present invention further provides an electronic cigarette atomizer, comprising the electronic cigarette atomizer core 1 mentioned above.

[0056] like Figure 1 and Figure 2 As shown, as an embodiment, the electronic cigarette atomizer also includes a shell 2 and an oil storage body 3, the oil storage body 3 and the electronic cigarette atomization core 1 are both arranged in the shell 2, and the oil storage body 3 is located above the electronic cigarette atomization core 1. The oil storage body 3 and the shell 2 can be an integral structure or a split structure (that is, the oil storage body 3 is a separate component). An oil storage cavity 31 is provided in the oil storage body 3, and the oil storage cavity 31 is located above the electronic cigarette atomization core 1. The bottom of the oil storage body 3 is provided with an oil outlet 32 ​​connected to the oil storage cavity 31, and the oil outlet 32 ​​is arranged corresponding to the electronic cigarette atomization core 1, and the oil outlet 32 ​​is located above the electronic cigarette atomization core 1.

[0057] Specifically, the oil storage chamber 31 is used to store the tobacco oil, and the tobacco oil stored in the oil storage chamber 31 can be supplied to the electronic cigarette atomization core 1 through the oil outlet 32 ​​under the action of gravity; after the tobacco oil reaches the electronic cigarette atomization core 1, the porous oil-conducting material 12 acts as an oil-conducting body to guide the tobacco oil to the holes 111 on the conductive heating element 11, and each hole 111 is equivalent to a heating pot. Hundreds of heating pots on the conductive heating element 11 heat hundreds of oil-conducting bodies at the same time, thereby atomizing the tobacco oil to produce smoke for users to inhale.

[0058] like Figures 1 to 4 As shown, as an embodiment, the electronic cigarette atomizer further includes a suction nozzle 6, which is located above the housing 2 and connected to the housing 2. A flue 33 is provided in the oil storage body 3, and the smoke generated on the electronic cigarette atomizer core 1 can flow into the suction nozzle 6 through the flue 33 for the user to inhale.

[0059] like Figures 2 to 4 As shown, as an implementation mode, the oil storage body 3 is a cylindrical structure, and the flue 33 is arranged in the middle position of the oil storage body 3.

[0060] like Figure 2 , Figure 4 and Figure 5As shown, as an embodiment, the electronic cigarette atomizer core 1 is a long strip structure (in this embodiment, the electronic cigarette atomizer core 1 is specifically a rectangular structure), and the oil outlet hole 32 includes a first oil outlet hole 321, a second oil outlet hole 322 and a third oil outlet hole 323. The first oil outlet hole 321 and the second oil outlet hole 322 are respectively arranged at the two ends of the electronic cigarette atomizer core 1 along its length direction L, and the third oil outlet hole 323 is arranged at the middle position of the electronic cigarette atomizer core 1. By providing a plurality of oil outlet holes 32, the smoke oil in the oil storage cavity 31 can be evenly supplied to various positions of the electronic cigarette atomizer core 1, thereby improving the atomization uniformity and atomization efficiency.

[0061] like Figure 2 and Figure 3 As shown, as an embodiment, the electronic cigarette atomizer further includes an electrode block 4 and an electrical connector 5, the number of the electrode blocks 4 is two, and the two electrode blocks 4 are respectively electrically connected to the two ends of the electronic cigarette atomizer core 1. The number of the electrical connector 5 is also two, and the two electrical connectors 5 are respectively electrically connected to the two electrode blocks 4, and the two electrical connectors 5 are respectively used to electrically connect to the positive and negative electrodes of a power source (not shown).

[0062] like Figures 1 to 3 As shown, as an embodiment, the bottom of the housing 2 is provided with an opening, and the electronic cigarette atomizer further comprises a bottom cover 21, which is connected to the bottom opening of the housing 2 to seal the housing 2. The bottom cover 21 is provided with an air inlet 211 for external air to enter the housing 2.

[0063] The embodiment of the present invention also provides a method for preparing an electronic cigarette atomizer core, comprising the following steps:

[0064] S10: preparing a porous oil-conducting slurry;

[0065] S20: providing a conductive heating element 11; wherein the conductive heating element 11 is a porous structure, and a plurality of holes 111 arranged at intervals are provided on the conductive heating element 11;

[0066] S30: Fill the porous oil-conducting slurry prepared in the above step S10 into each hole 111 of the conductive heating element 11 (for example, by injection molding), and then solidify the porous oil-conducting slurry in the hole 111. After solidification, the porous oil-conducting slurry in the hole 111 forms a porous oil-conducting material 12, that is, the electronic cigarette atomization core 1 is obtained.

[0067] like Fig. 9 As shown, as an embodiment, a connecting channel is also provided on the conductive heating element 11, and adjacent holes 111 on the conductive heating element 11 are connected through the connecting channel, and the porous oil-conducting slurry is also filled in the connecting channel, so that the porous oil-conducting slurry in the connecting channel also forms a porous oil-conducting material 12 after solidification.

[0068] like Fig. 9 As shown, as an embodiment, the connecting channel includes a through-hole 114 arranged in the conductive heating element 11, and the adjacent holes 111 are connected through the through-hole 114, and the porous oil-conducting slurry is also filled in the through-hole 114, so that the porous oil-conducting slurry in the through-hole 114 also forms a porous oil-conducting material 12 after curing.

[0069] like Fig.10 As shown, as another embodiment, the connecting channel includes a groove 115 arranged on the surface of the conductive heating element 11, and adjacent holes 111 are connected through the groove 115. The porous oil-conducting slurry is also filled in the groove 115, so that the porous oil-conducting slurry in the groove 115 also forms a porous oil-conducting material 12 after curing.

[0070] As an implementation method, the porous oil-conducting slurry is porous wood pulp, and the components of the porous wood pulp include wood fiber slurry, a binder and a modifier. The above step S10 specifically includes:

[0071] S101: crushing the wood and sieving it (the mesh number of the sieve is, for example, 800 meshes) to obtain wood powder, wherein the wood includes at least one of wood chips, bamboo chips, bagasse and crop straw; placing the wood powder in an alkaline solution (for example, a 30% lime alkaline solution) for steaming for 3 hours, and drying and dehydrating the wood powder after the steaming is completed; then continuing to place the wood powder in an alkaline solution (for example, a 30% lime alkaline solution) for steaming for 1 hour, and controlling the steam pressure during steaming to be 0.1Mpa-0.15Mpa; then ball milling the wood powder for 24 hours at a ball milling temperature of 130°C-140°C; finally filtering and washing the wood powder until the wood powder is neutral, thereby obtaining wood fiber slurry;

[0072] S102: Evenly mix the wood fiber slurry prepared in the above step S101 with the binder and the modifier to obtain a porous oil-conducting slurry.

[0073] As an implementation mode, the weight proportions of the components of the porous wood pulp are: 45-60 parts of wood fiber pulp, 40-55 parts of binder, and 2-5 parts of modifier.

[0074] As an implementation mode, the binder is silica sol (ie, sol of SiO2 nanoparticles), and the content of SiO2 nanoparticles in the silica sol is 20%-25%. The modifier is a silane coupling agent.

[0075] Specifically, the modifier can modify the SiO2 nanoparticles in the binder. The modified SiO2 nanoparticles change from the original hydroxyl-rich hydrophilic surface to a lipophilic surface containing an organic functional group R. The presence of the organic coating layer on the surface of the SiO2 nanoparticles will not only improve the compatibility of the nanoparticles with the surrounding organic environment, but also effectively prevent the nanoparticles from agglomerating with each other, thereby improving the dispersibility of the SiO2 nanoparticles and ultimately improving the cohesion and porosity of the porous oil-conducting slurry component.

[0076] As an embodiment, in the above step S30, the porous oil-conducting slurry in the pores 111 is solidified, specifically including:

[0077] The conductive heating element 11 with the porous oil-conducting slurry filled in the pores 111 is placed in a cold storage for freezing. The freezing time is 14-18 hours and the freezing temperature is -20°C. At this time, the porous oil-conducting slurry in the pores 111 is frozen to form a frozen slurry; then the conductive heating element 11 is dried in an environment of 40°C-50°C for 8 hours; finally, the conductive heating element 11 is baked in an environment of 150°C-200°C for 3 hours, so that the porous oil-conducting slurry in the pores 111 is solidified.

[0078] As an implementation manner, the conductive heating element 11 is a porous metal conductor.

[0079] As an implementation manner, the conductive heating element 11 is foamed metal.

[0080] The electronic cigarette atomizer core 1 and its preparation method provided in this embodiment are prepared by filling porous oil-conducting slurry into the holes 111 of the conductive heating element 11 to form a porous oil-conducting material 12, and using the porous oil-conducting material 12 to replace the original oil-conducting cotton as the oil-conducting body to guide the smoke oil into the holes 111 on the conductive heating element 11. At the same time, the conductive heating element 11 has a conductive heating function, and the porous oil-conducting material 12 is a porous structure, and the smoke oil can be atomized in each hole 111 of the conductive heating element 11. There is a large atomization contact area between the porous oil-conducting material 12 and the conductive heating element 11, and the atomization efficiency is high, and the oil absorption and atomization amount are large. Moreover, the electronic cigarette atomizer core 1 realizes the integration of the oil-conducting structure and the heating structure, and it has both the oil-conducting and atomizing functions, which can ensure the balance of supply and demand of the smoke oil during the electronic cigarette atomization process, and the porous oil-conducting material 12 is tightly combined with the conductive heating element 11, which can avoid the phenomenon of core sticking and oil leakage.

[0081] Example 1

[0082] The method for preparing the electronic cigarette atomizer provided in this embodiment comprises the following steps:

[0083] Preparation of porous oil-conducting slurry: 50 parts of wood chips and 50 parts of crop straws are crushed and sieved (the mesh size of the sieve is 800 meshes) to obtain wood powder; the wood powder is placed in an alkaline solution (30% lime alkaline solution) and cooked for 3 hours. After the cooking is completed, the wood powder is dried and dehydrated, and then the wood powder is continued to be placed in an alkaline solution (30% lime alkaline solution) and cooked for 1 hour, and the steam pressure during cooking is controlled to be 0.1Mpa-0.15Mpa; then the wood powder is ball-milled, the ball-milling time is 24 hours, and the ball-milling temperature is 140°C; finally, the wood powder is filtered and washed until the wood powder is neutral, so as to obtain wood fiber slurry;

[0084] Take 57 parts of the prepared wood fiber slurry, 40 parts of silica sol with a SiO2 nanoparticle content of 25%, and 3 parts of a silane coupling agent, mix them evenly to obtain a porous oil-conducting slurry;

[0085] The prepared porous oil-conducting slurry is injected into the foam metal so that the porous oil-conducting slurry fills the pores on the foam metal, and then placed in a cold storage and frozen for 14-18 hours at a freezing temperature of -20°C; then dried at 40°C-50°C for 8 hours, and finally baked at 150°C for 3 hours to obtain the electronic cigarette atomization core 1.

[0086] Example 2

[0087] The method for preparing the electronic cigarette atomizer provided in this embodiment comprises the following steps:

[0088] Preparation of porous oil-conducting slurry: 35 parts of wood chips, 35 parts of bamboo chips and 30 parts of bagasse are crushed and sieved (the mesh size of the sieve is 800 meshes) to obtain wood powder; the wood powder is placed in an alkaline solution (30% lime alkaline solution) and cooked for 3 hours, and after the cooking is completed, the wood powder is dried and dehydrated, and then the wood powder is continued to be placed in an alkaline solution (30% lime alkaline solution) and cooked for 1 hour, and the steam pressure during cooking is controlled to be 0.1Mpa-0.15Mpa; then the wood powder is ball-milled, the ball-milling time is 24 hours, and the ball-milling temperature is 140°C; finally, the wood powder is filtered and washed until the wood powder is neutral, so as to obtain wood fiber slurry;

[0089] Take 40 parts of the prepared wood fiber slurry, 55 parts of silica sol with a SiO2 nanoparticle content of 25%, and 5 parts of a silane coupling agent, mix them evenly to obtain a porous oil-conducting slurry;

[0090] The prepared porous oil-conducting slurry is injected into the foam metal so that the porous oil-conducting slurry fills the pores on the foam metal, and then placed in a cold storage and frozen for 14-18 hours at a freezing temperature of -20°C; then dried at 40°C-50°C for 8 hours, and finally baked at 150°C for 3 hours to obtain the electronic cigarette atomization core 1.

[0091] Example 3

[0092] The method for preparing the electronic cigarette atomizer provided in this embodiment comprises the following steps:

[0093] Preparation of porous oil-conducting slurry: 50 parts of wood chips, 20 parts of bamboo chips and 30 parts of bagasse are crushed and sieved (the mesh size of the sieve is 800 mesh) to obtain wood powder; the wood powder is placed in an alkaline solution (30% lime alkaline solution) and cooked for 3 hours, and after the cooking is completed, the wood powder is dried and dehydrated, and then the wood powder is continued to be placed in an alkaline solution (30% lime alkaline solution) and cooked for 1 hour, and the steam pressure during cooking is controlled to be 0.1Mpa-0.15Mpa; then the wood powder is ball-milled, the ball-milling time is 24 hours, and the ball-milling temperature is 140°C; finally, the wood powder is filtered and washed until the wood powder is neutral, so as to obtain wood fiber slurry;

[0094] Take 50 parts of the prepared wood fiber slurry, 46 parts of silica sol with a SiO2 nanoparticle content of 25%, and 4 parts of a silane coupling agent, mix them evenly to obtain a porous oil-conducting slurry;

[0095] The prepared porous oil-conducting slurry is injected into the foam metal so that the porous oil-conducting slurry fills the pores on the foam metal, and then placed in a cold storage and frozen for 14-18 hours at a freezing temperature of -20°C; then dried at 40°C-50°C for 8 hours, and finally baked at 150°C for 3 hours to obtain the electronic cigarette atomization core 1.

[0096] The electronic cigarette atomizer core 1 prepared in Examples 1-3 was cut into a rectangular block of 0.2mm*5mm*10mm (i.e., 0.2mm thick, 5mm wide, and 10mm long), which was able to absorb 0.3-0.35g of smoke oil. It was connected to a 3.7V power supply to atomize the smoke oil. After heating to 200°C, after atomization for 1s-3s, 0.02g of smoke oil remained.

[0097] The nickel foam was cut into rectangular blocks of 0.2mm*5mm*10mm in size, and non-woven fabric was attached to the bottom of the nickel foam to make an atomizer core. The non-woven fabric of the same area can only absorb about 0.2g of e-liquid. It was connected to a 3.7V power supply to atomize the e-liquid. After heating to 200℃ and atomizing for 3s-5s, 0.02g of e-liquid remained.

[0098] It can be seen that the oil absorption and atomization efficiency of the electronic cigarette atomizer core 1 provided in this embodiment are greatly improved compared with conventional atomizer cores.

[0099] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An electronic cigarette atomization core, characterized in that: It comprises a conductive heating element, on which a plurality of holes are provided, the plurality of holes are arranged at intervals on the conductive heating element, and each hole is filled with a porous oil-conducting material; the conductive heating element has a conductive heating function, and the tobacco oil can be atomized in the holes of the conductive heating element; The conductive heating element has a top surface and a bottom surface that are arranged opposite to each other, and the hole penetrates both the top surface and the bottom surface of the conductive heating element; or, the hole penetrates the top surface of the conductive heating element, and the hole does not penetrate the bottom surface of the conductive heating element.

2. The electronic cigarette atomizer core according to claim 1, characterized in that: The conductive heating element is provided with a connecting channel, and the adjacent holes on the conductive heating element are connected through the connecting channel. The porous oil-conducting material is also filled in the connecting channel.

3. The electronic cigarette atomizer core according to claim 2, characterized in that: The connecting channel includes a through hole arranged in the conductive heating body and / or a groove arranged on the surface of the conductive heating body, and the porous oil-conducting material is also filled in the through hole and / or the groove.

4. The electronic cigarette atomizer core according to claim 1, characterized in that: The porous oil-conducting material is a porous wood fiber material.

5. The electronic cigarette atomizer core according to claim 1, characterized in that: The conductive heating element is a porous metal conductor.

6. The electronic cigarette atomizer core according to claim 5, characterized in that: The conductive heating element is foamed metal.

7. A method for preparing an electronic cigarette atomizer core according to any one of claims 1 to 6, characterized in that: The method for preparing the electronic cigarette smoke core comprises the following steps: S10: preparing a porous oil-conducting slurry; S20: providing a conductive heating element, wherein a plurality of holes are provided on the conductive heating element; S30: Fill the porous oil-conducting slurry prepared in the above step S10 into the holes of the conductive heating element, and then solidify the porous oil-conducting slurry in the holes. The porous oil-conducting slurry in the holes forms a porous oil-conducting material after solidification, that is, an electronic cigarette atomization core is obtained.

8. The method for preparing the electronic cigarette atomizer core according to claim 7, characterized in that: The porous oil-conducting slurry is porous wood pulp, and the components of the porous wood pulp include wood fiber slurry, a binder and a modifier.

9. The method for preparing the electronic cigarette atomizer core according to claim 8, characterized in that: The step S10 specifically includes: S101: crushing wood and sieving it to obtain wood powder, wherein the wood includes at least one of wood chips, bamboo chips, bagasse and crop straw; putting the wood powder into an alkaline solution for steaming, drying and dehydrating the wood powder, and then continuing to put the wood powder into the alkaline solution for steaming, and controlling the steam pressure during steaming to be 0.1Mpa-0.15Mpa; then ball milling the wood powder at a ball milling temperature of 130°C-140°C; finally filtering and washing the wood powder until the wood powder is neutral, so as to obtain the wood fiber slurry; S102: Evenly mix the wood fiber slurry prepared in the above step S101 with the binder and the modifier to obtain the porous oil-conducting slurry.

10. The method for preparing the electronic cigarette atomizer core according to claim 8, characterized in that: The weight proportions of the components of the porous wood pulp are as follows: 45-60 parts of the wood fiber pulp, 40-55 parts of the binder, and 2-5 parts of the modifier.

11. The method for preparing the electronic cigarette atomizer core according to claim 8, characterized in that: The binder is silica sol, and the content of SiO2 nanoparticles in the silica sol is 20%-25%; the modifier is a silane coupling agent.

12. The method for preparing the electronic cigarette atomizer core according to claim 7, characterized in that: The curing treatment of the porous oil-conducting slurry in the pores specifically includes: The conductive heating element with the porous oil-conducting slurry filled in the pores is placed in a cold storage for freezing, and then the conductive heating element is dried at 40°C-50°C, and finally the conductive heating element is baked at 150°C-200°C, so as to solidify the porous oil-conducting slurry in the pores.

13. An electronic cigarette atomizer, characterized in that: It includes the electronic cigarette atomizer core as described in any one of claims 1 to 6; the electronic cigarette atomizer also includes a shell and an oil storage body, the oil storage body and the electronic cigarette atomizer core are both arranged in the shell, the oil storage body is provided with an oil storage cavity, the oil storage cavity is located above the electronic cigarette atomizer core, the bottom of the oil storage body is provided with an oil outlet hole connected to the oil storage cavity, and the oil outlet hole is arranged corresponding to the electronic cigarette atomizer core.

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