Atomization assembly and preparation method thereof, and aerosol generating device

Abstract

The present invention relates to an atomizing component and a preparation method thereof, and an aerosol generating device; wherein the atomizing component comprises an oil guiding element and a graphite heating element, wherein the oil guiding element is used for absorbing and conducting oil, the oil guiding element is an internal hollow structure, and an air flow channel is formed inside the oil guiding element, and the graphite heating element is arranged on the inner side surface of the oil guiding element in a surrounding manner; the atomizing component of the present application ensures the contact area and heating effect between the graphite heating element and the oil guiding element by surrounding the graphite heating element in the oil guiding element; the graphite can be used in an oxidizing atmosphere of -200°C-800°C, so that it is not easy to have carbon deposition and oxidation when used as a heating element; in addition, since the surface thermal conductivity of graphite is very high, and the radial thermal conductivity perpendicular to the surface is low, the graphite heating element can not only ensure the heating effect on the oil guiding element, but also prevent the heat from being transferred to the outer shell after the atomizing component is placed in the outer shell, so that the outer shell is not easy to get hot.

Description

Technical Field

[0001] The invention relates to the technical field of atomization, and in particular to an atomization component and a preparation method thereof, and an aerosol generating device. Background Art

[0002] Existing aerosol generating devices generate aerosols through their internal atomizing components for users to absorb through their respiratory system.

[0003] Most of the current atomizer components include a heating wire, oil-conducting cotton, and a shell for accommodating the heating wire and the oil-conducting cotton. By winding the heating wire around the oil-conducting cotton, the heating wire can heat and atomize the oil in the oil-conducting cotton. However, since the oil-conducting cotton only contacts the coil part of the heating wire and the contact area is small, the heating effect of the heating wire on the oil-conducting cotton is limited. Under the same power, the atomization efficiency of the atomizer component is low, and oxidation and carbon deposition are prone to occur in high temperature environments. If the power of the heating wire is increased, although the heating effect of the heating wire on the oil-conducting cotton can be improved, the shell will also quickly become hot, affecting the user experience. Summary of the invention

[0004] Based on this, it is necessary to provide an atomization component and a preparation method thereof, and an aerosol generating device to address the above-mentioned problem of low atomization efficiency, which can not only ensure the atomization effect but also prevent the shell from getting hot.

[0005] An atomizing assembly, comprising:

[0006] An oil guide element, used for absorbing and conducting oil, wherein the oil guide element is an internal hollow structure, and an air flow channel is formed inside the oil guide element;

[0007] A graphite heating element is disposed around the inner side of the oil guide element.

[0008] The above-mentioned atomizing assembly ensures the contact area and heating effect between the graphite heating element and the oil conducting element by surrounding the graphite heating element on the inner side surface of the oil conducting element. At the same time, due to the characteristic that graphite can be used in an oxidizing atmosphere of -200°C-800°C, it is not easy to have carbon deposition and oxidation when used as a heating element. In addition, since the surface thermal conductivity of graphite is very high, and the radial thermal conductivity perpendicular to the surface is relatively low, after using graphite as a heating element, it can not only ensure the heating effect of the oil conducting element, but also prevent the heat from being transferred to the outer shell when the atomizing assembly is placed in the outer shell, so that the outer shell is not easy to get hot.

[0009] In one embodiment, the graphite heating element is attached to the inner side of the oil guide element.

[0010] In the above embodiment, by making the graphite heating element fully contact with the oil conducting element, the graphite heating element can transfer heat to the oil conducting element evenly, thereby ensuring the heating effect of the graphite heating element on the oil conducting element.

[0011] In one embodiment, the graphite heating element is spiral-shaped.

[0012] In the above embodiment, the spiral graphite heating element can generate a spiral airflow, so that the heat of the gas is uniform and condensation is not likely to occur.

[0013] In one embodiment, the oil guide element is spiral, and the spiral graphite heating element is attached to the spiral oil guide element.

[0014] In the above embodiment, the oil-conducting element, which is also in a spiral shape, can ensure the contact effect between the spiral graphite heating element and itself, thereby ensuring the heating effect of the graphite heating element on the oil-conducting element.

[0015] In one embodiment, the air flow channel has an air inlet and an air outlet, and the thickness of the graphite heating element gradually increases with the increase of the distance from the air inlet.

[0016] In the above embodiment, the resistance gradient effect is achieved by adjusting the thickness of graphite, so that under the same power, the smaller the thickness of the graphite heating element, the higher the heat generated. Therefore, by making the thickness of the graphite heating element larger as it is closer to the air outlet, the temperature of the atomized gas gradually decreases when flowing from the air inlet to the air outlet, so that the atomized gas will not be too hot when inhaled into the user's mouth.

[0017] In one of the embodiments, the atomizer assembly further includes a mounting element, a mounting channel is provided in the mounting element, and the oil guide element is disposed around the inner side surface of the mounting element.

[0018] In the above embodiment, the oil guide element can be installed in the atomizing device with assistance of the installation element, and the installation element can protect the spiral oil guide element at the same time.

[0019] In one of the embodiments, the oil guide element is attached to the inner side surface of the mounting element.

[0020] In the above-mentioned embodiments, the stability of the oil guide element in the mounting element is ensured.

[0021] In one of the embodiments, the graphite heating element is hollowed out along the spiral direction to form a through hole.

[0022] In the above embodiment, when the graphite heating element heats and atomizes the oil-conducting element, the generated atomized gas can be output through the through hole.

[0023] In one embodiment, the graphite heating element is a sheet structure.

[0024] In the above embodiment, the contact area between the graphite heating element and the oil guide element is ensured by the sheet structure, thereby ensuring the heating atomization effect.

[0025] An aerosol generating device comprises a shell and the above-mentioned atomizing assembly, wherein the shell is provided with a accommodating cavity, the atomizing assembly is arranged in the accommodating cavity, the shell is provided with an air inlet and an air outlet communicating with the accommodating cavity, and the air inlet and the air outlet are both communicated with the atomizing assembly.

[0026] The above-mentioned aerosol generating device can atomize the oil in the shell through the atomizing component, and the user can then apply suction to the air outlet, so that the gas outside the shell enters the containing cavity through the air inlet and is mixed with the atomized gas and then sucked out through the air outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure between the oil guide element and the graphite heating element in some embodiments of the present application;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure of the graphite heating element;

[0029] Figure 3 for Figure 1 A schematic diagram of the structure of the oil guide element;

[0030] Figure 4 This is a schematic diagram of the structure of the heating component of some embodiments of the present application;

[0031] Figure 5 This is a schematic diagram of the structure of an aerosol generating device according to some embodiments of the present application.

[0032] Reference numerals:

[0033] 1. Oil guide element;

[0034] 11. Oil guide parts; 12. Connecting parts;

[0035] 13. Air inlet;

[0036] 14. Exhaust port;

[0037] 2. Graphite heating element;

[0038] 21. Heating part; 22. Pin part;

[0039] 23. Through hole;

[0040] 3. Install components;

[0041] 4. Shell;

[0042] 5. Power supply components. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 limiting the present invention.

[0045] 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present invention, 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 a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0049] An embodiment of the present invention provides an atomization assembly that can be used in an atomizer. Specifically, the atomization assembly can absorb and heat the oil in the atomizer, so that the oil is atomized under the heating effect for the user to inhale.

[0050] See also Figure 1 The atomization assembly includes an oil guide element 1 and a graphite heating element 2. The oil guide element 1 is used to absorb and conduct the oil body, and the graphite heating element 2 can emit heat after being powered on, and heat and atomize the oil body in the oil guide element 1. Specifically, the oil guide element 1 is an internal hollow structure, and an air flow channel for gas circulation is provided in the oil guide element 1, and the air flow channel has an air inlet 13 and an air outlet 14. When the user applies a suction force to the air outlet 14, the external air can enter the air flow channel through the air inlet 13, and after mixing with the atomized gas in the air flow channel, it is extracted through the air outlet 14. The graphite heating element 2 is arranged around the inner side of the oil guide element 1, so that the heat emitted by the graphite heating element 2 can be evenly conducted to the oil guide element 1, and then the oil body in the oil guide element 1 is heated and atomized. In some embodiments, the graphite heating element 2 is arranged around part of the inner side of the oil guide element 1; in other embodiments, the graphite heating element 2 is arranged around the entire inner side of the oil guide element 1.

[0051] See also Figure 2The graphite heating element 2 includes a heating portion 21 for heating and a pin portion 22 for conducting electricity. The heating portion 21 is a graphite heating element, and at least two pin portions 22 are provided, and both pin portions 22 are electrically connected to the heating portion 21. In a specific setting, the two pin portions 22 can be connected to the positive and negative electrodes of the power supply component respectively, so that the pin portion 22 can conduct electricity to the heating portion 21, so that the heating portion 21 heats and atomizes the oil in the oil guide element 1.

[0052] The above-mentioned atomizing component utilizes the characteristic that graphite can be used in an oxidizing atmosphere of -200℃-800℃, so that it is not easy to have carbon deposition and oxidation when used as a heating element. In addition, since graphite belongs to the hexagonal crystal system, its crystals are composed of hexagonal mesh planes composed of carbon atoms and are regularly stacked, and have a layered structure. In each layer, the carbon atoms are evenly arranged in hexagons. This unique crystal structure makes the surface thermal conductivity of graphite very high, while the radial thermal conductivity perpendicular to the surface is low. Therefore, by setting the heating element as graphite material and utilizing the characteristic that the lateral thermal conductivity of graphite is higher than the radial thermal conductivity, it is possible to ensure the heating effect of the graphite heating element 2 on the oil-conducting element 1, and after the atomizing component is placed in the outer shell, it is difficult for the heat to be transferred to the outer shell, so that the outer shell is not easy to get hot.

[0053] To further ensure the heating effect, the graphite heating element 2 is attached to the inner side of the oil-conducting element 1. Specifically, the graphite heating element 2 and the oil-conducting element 1 are both cylindrical sleeve structures. That is, the outer contour of the cross section of the graphite heating element 2 and the outer contour of the cross section of the oil-conducting element 1 are both circular, and the central axis of the graphite heating element 2 coincides with the central axis of the oil-conducting element 1, and the outer diameter of the graphite heating element 2 is consistent with the inner diameter of the oil-conducting element 1. By fully contacting the graphite heating element 2 with the oil-conducting element 1, the graphite heating element 2 can fully transfer its heat to the oil-conducting element 1, thereby ensuring the heating effect of the graphite heating element 2 on the oil-conducting element 1.

[0054] In one embodiment, the graphite heating element 2 is spiral. Specifically, the graphite heating element 2 includes a spiral flexible segment with multiple turns, wherein the spiral profile has a pitch and a diameter. By setting the shape of the graphite heating element 2 to a spiral shape, the airflow generated by the graphite heating element 2 is also spiral. Thus, by surrounding the spiral graphite heating element 2 arranged in the oil guide element 1, the heat of the gas in the oil guide element 1 is made more uniform and condensation is not easy to occur. In some variations, the pitch of the spiral profile is consistent. Alternatively, the pitch of the spiral profile may also be variable. That is, the pitch of the spiral profile of the graphite heating element 2 gradually increases with the increase of the distance from the air inlet 13. Since the smaller the pitch of the spiral profile of the graphite heating element 2 is under the same power, the higher the heat generated is, the larger the pitch of the graphite heating element 2 is closer to the air outlet 14 and the smaller the pitch is closer to the air inlet 13, so that the heat generated by the portion of the graphite heating element 2 near the air inlet 13 is high and the heat generated by the portion near the air outlet 14 is low. When the atomized gas in the air flow channel is mixed with the gas entering from the air inlet 13 and flows out from the air outlet 14, the temperature of the atomized gas can be gradually reduced, so that the atomized gas will not be too hot when inhaled into the user's mouth. In addition, the diameter of the spiral profile can be consistent along the length of the spiral profile, or it can be variable.

[0055] See also Figure 1 and Figure 3In one embodiment, the oil guide element 1 is spiral, and the spiral graphite heating element 2 is attached to the spiral oil guide element 1. Specifically, the oil guide element 1 includes a spiral flexible segment with multiple turns, wherein the spiral profile has a pitch and a diameter. The pitch of the spiral profile of the oil guide element 1 is consistent with the pitch of the spiral profile of the graphite heating element 2, and the inner diameter of the spiral profile of the oil guide element 1 is consistent with the outer diameter of the spiral profile of the graphite heating element 2. By setting the outer shape of the oil guide element 1 to a spiral shape, the spiral graphite heating element 2 can be completely fitted with the oil guide element 1, and the contact area between the graphite heating element 2 and the oil guide element 1 is guaranteed to the greatest extent, thereby ensuring the heating effect of the graphite heating element 2 on the oil guide element 1. In one embodiment, the air flow channel has an air inlet 13 and an air outlet 14, and the thickness of the graphite heating element 2 gradually increases with the increase of the distance from the air inlet 13. That is, the outer contour of the cross section of the graphite heating element 2 is a circular ring, and the difference between the outer diameter and the inner diameter of the part closer to the air inlet 13 is smaller, and the difference between the outer diameter and the inner diameter of the part closer to the air outlet 14 is larger. The effect of gradual resistance change is achieved by adjusting the thickness of the graphite heating element 2. Since the smaller the thickness of the graphite heating element 2 is under the same power, the higher the heat generated, the greater the thickness of the graphite heating element 2 is closer to the air outlet 14, and the smaller the thickness is closer to the air inlet 13, so that the heat generated by the part of the graphite heating element 2 close to the air inlet 13 is high, and the heat generated by the part close to the air outlet 14 is low. When the atomized gas in the air flow channel is mixed with the gas entering from the air inlet 13 and flows out from the air outlet 14, the temperature of the atomized gas can be gradually reduced, so that the atomized gas will not be too hot when inhaled into the user's mouth.

[0056] In one embodiment, the atomization assembly further includes a mounting element 3, in which a mounting channel is provided, and the oil guide element 1 is arranged around the inner side of the mounting element 3. Specifically, the oil guide element 1 includes an oil guide member 11 and a connector 12, wherein the oil guide member 11 is arranged inside the heat conduction channel, and the oil guide member 11 is attached to the inner side of the mounting element 3, and the oil guide member 11 has a spiral shape. One end of the connector 12 is connected to the oil guide member 11, and the other end of the connector 12 is located outside the mounting element 3. The mounting element 3 can assist the oil guide member 1 in being installed in the atomization device, and the mounting element 3 can protect the spiral oil guide member 11. It is worth mentioning that the pitch of the spiral profile of the oil guide member 11 gradually increases with the increase of the distance from the connector. That is, the pitch of the spiral profile of the oil guide member 11 can be adjusted according to the position of the connector 12. Since the connecting member 12 is used to conduct the oil outside the mounting element 3 to the oil guide member 11, the pitch of the spiral profile of the oil guide member 11 can actually be adjusted according to the oil inlet position. In this embodiment, the connecting member 12 is arranged at the bottom of the oil guide member 11, so that the oil guide element 1 absorbs the oil from the bottom, and the pitch of the spiral profile of the oil guide member 11 gradually decreases from top to bottom. Since the smaller the pitch of the spiral profile, the better the oil absorption effect of the oil guide member 11, this structure can achieve the best atomization effect.

[0057] When the above-mentioned atomizing assembly is specifically set, the mounting element 3 can be fixed inside the shell of the atomizing device, and the mounting element 3 can be communicated with the outside world through the air inlet and the air outlet on the shell. The outside gas can enter the inside of the mounting element 3 through the air inlet and be output through the air outlet. In one embodiment, a chamber for accommodating the oil body is provided inside the shell, the oil body is placed in the chamber, and the end of the connecting member 12 away from the oil guide member 11 is directly placed in the oil body, so that the oil body is directly introduced into the oil guide member 11 through the connecting member 12, so that the graphite heating element 2 heats the oil body in the oil guide member 11. In another embodiment, a chamber for accommodating the oil body is provided inside the shell, and an oil storage member is provided in the chamber, and the oil body is absorbed in the oil storage member, and the end of the connecting member 12 away from the oil guide member 11 is connected to the oil storage member, so that the oil body in the oil storage member is introduced into the oil guide member 11 through the connecting member 12, so that the graphite heating element 2 heats the oil body in the oil guide member 11.

[0058] In some embodiments, a notch is provided on the mounting element 3, and the connecting member 12 passes through the notch. That is, one end of the connecting member 12 is connected to the oil guide member 11, and the other end of the connecting member 12 passes through the notch and is located outside the mounting element 3. The connecting member 12 can absorb the oil through the notch. In one embodiment, the connecting member 12 is connected to the upper part of the oil guide member 11, and the notch is correspondingly arranged at the upper part of the mounting element 3; in another embodiment, the connecting member 12 is connected to the middle part of the oil guide member 11, and the notch is correspondingly arranged at the middle part of the mounting element 3; in another embodiment, the connecting member 12 is connected to the lower part of the oil guide member 11, and the notch is correspondingly arranged at the lower part of the mounting element 3.

[0059] In some embodiments, the oil guide member 11 and the connecting member 12 can be made of the same material. Specifically, the oil guide member 11 and the connecting member 12 can be made of porous ceramics, porous quartz glass, sponge, non-woven fabric, porous fiber or oil-conducting cotton. It should be noted that the oil guide member 11 and the connecting member 12 can also be made of different materials. For example, the oil guide member 11 is made of porous ceramics, and the connecting member 12 is made of porous quartz glass.

[0060] In some embodiments, the number of the connecting members 12 may include two, three, four, etc., which is not limited in the present application. When the number of the connecting members 12 is two, the two connecting members 12 are evenly arranged on the oil guide member 11 with the central axis of the oil guide member 11 as the axis. After absorbing the oil, the two connecting members 12 can evenly transfer the oil to the oil guide member 11. In addition, the connecting member 12 can be a sheet structure or a plate structure. Compared with the rod structure, the sheet structure and the plate structure can make the contact area between the connecting member 12 and the oil guide member 11 larger, and also make the contact area between the connecting member 12 and the oil larger.

[0061] In one embodiment, the oil guide element 1 is attached to the inner side of the mounting element 3. Specifically, the outer contour of the cross section of the oil guide element 1 and the outer contour of the cross section of the mounting element 3 are both circular, and the central axis of the oil guide element 1 coincides with the central axis of the mounting element 3, and the outer diameter of the oil guide element 1 is consistent with the inner diameter of the mounting element 3. The stability of the oil guide element 1 in the mounting element 3 is ensured by fully contacting the oil guide element 1 with the mounting element 3. In addition, the oil guide element 1 can be attached to the inner side of the mounting element 3 by high-temperature glue to further ensure the stability between the oil guide element 1 and the mounting element 3.

[0062] In some embodiments, the outer contour of the cross section of the mounting element 3 and the outer contour of the cross section of the oil guide member 11 of the oil guide member 1 are both circular rings. The oil guide member 11 is at the same height as the mounting element 3. The oil guide member 11 can be completely attached to the inside of the mounting element 3. That is, after the oil guide member 11 is placed inside the mounting element 3 and the central axis of the mounting element 3 and the central axis of the oil guide member 11 are both perpendicular to the horizontal line, the top of the oil guide member 11 and the top of the mounting element 3 are both located on the same horizontal plane, and the bottom of the oil guide member 11 and the bottom of the mounting element 3 are both located on the same horizontal plane. The contact area between the oil guide member 11 and the mounting element 3 is guaranteed to the greatest extent. In addition, the stability of the oil guide member 11 in the mounting element 3 is guaranteed. At the same time, the outer contour of the cross section of the heating portion 21 of the graphite heating element 2 and the outer contour of the cross section of the oil guide member 11 of the oil guide member 1 are also circular rings. The heating portion 21 and the oil guide member 11 are at the same height. The heating portion 21 can be completely attached to the inside of the oil guide member 11. That is, after the heating part 21 is placed inside the oil guide member 11 and the central axis of the heating part 21 and the central axis of the oil guide member 11 are both perpendicular to the horizontal line, the top of the oil guide member 11 and the top of the heating part 21 are both located on the same horizontal plane, and the bottom of the oil guide member 11 and the bottom of the heating part 21 are both located on the same horizontal plane. The contact area between the heating part 21 and the oil guide member 11 is guaranteed to the greatest extent, thereby ensuring the heating effect of the heating part 21 on the oil guide member 11.

[0063] See also Figure 2 In one embodiment, a through hole 23 is hollowed out on the graphite heating element 2. Specifically, the graphite heating element 2 has a spiral shape, and a through hole 23 is hollowed out on the graphite heating element 2 along the spiral direction. The shape of the through hole 23 is circular, rhombus, trapezoidal, square or other shapes. In one embodiment, the through holes 23 are arranged as a group, and a group of through holes 23 is arranged along the midline of the graphite heating element 2 in a spiral extension, that is, the group of through holes 23 divides the graphite heating element 2 into two equal parts along the midline of the graphite heating element 2 along its width direction, which is equivalent to setting two heating elements in parallel. In another embodiment, the through holes 23 are arranged as a number greater than or equal to 2. For example, when two groups of through holes 23 are provided, the two groups of through holes 23 can be arranged along the three-equal dividing line of the width direction of the graphite heating element 2. That is, the graphite heating element 2 is divided into three equal parts along its width direction, which is equivalent to setting three heating elements in parallel. In addition, the through holes 23 between two adjacent groups are arranged in parallel to ensure that the through holes 23 are evenly arranged. In the actual working process, the atomized gas generated by the heating of the oil guide element 1 can be output through the through holes 23 of the graphite heating element 2. Compared with the heating wire, the graphite heating element 2 with the through holes 23 has a stable heating speed and uniform temperature. The graphite heating element 2 using the graphite heating element can not only be used for heating, but also for heat conduction, thereby improving the utilization rate of thermal energy. Under the condition of atomizing the same amount of oil, less thermal energy is consumed, which is more energy-saving.

[0064] In one embodiment, the graphite heating element 2 is a sheet structure. Specifically, the graphite heating element 2 with a spiral sheet structure is arranged around the inner side of the oil guide element 1. The sheet structure ensures the contact area between the graphite heating element 2 and the oil guide element 1, thereby ensuring the heating atomization effect. In addition, the sheet structure is also easier to set the through hole 23, which is convenient for production and processing.

[0065] Another embodiment of the present invention provides a method for preparing an atomizer assembly, comprising the following steps:

[0066] A polyimide film of a specific shape is provided, and the specific shape enables the polyimide film to be fixed in the positioning tube in a spiral shape; a hole punching operation is performed on the polyimide film to form a polyimide film with through holes 23. The structure after punching can be referred to Figure 2 .

[0067] A positioning tube is provided, and the punched polyimide film is attached to the inner wall of the positioning tube in a spiral shape. The polyimide film is fixed by the positioning tube so that it can be placed in a carbonization furnace for firing later. Among them, the positioning tube can be a graphite tube.

[0068] The polyimide film fixed in the positioning tube is fired to carbonize the polyimide film to form a graphite heating element 2 with a spiral shape. In the specific operation, the positioning tube and the polyimide film are first placed in a carbonization furnace, and then the carbonization furnace is controlled to uniformly heat up to 220-230°C at a rate of 10-12°C / min within 1-2 hours, and then uniformly heat up to 300-350°C at a rate of 10-12°C / min within 3-4 hours, and then the heating is stopped to allow the polyimide film to gradually cool. When the polyimide film is cooled to room temperature, nitrogen is injected into the carbonization furnace, and the carbonization furnace is controlled to uniformly heat up to 1250°C at a rate of 3-5°C / min within 2 hours. Then, an ultra-high temperature furnace is used to assist the carbonization furnace in an argon atmosphere to heat up to 2,800°C at a heating rate of 3-5°C / min within 1-2 hours to carbonize the polyimide film and obtain a graphite heating element 2.

[0069] An oil guide element 1 is provided, and the prepared graphite heating element 2 is fixed in the oil guide element 1, and the oil guide element 1 is cut according to the spiral shape of the graphite heating element 2. In the specific operation, the graphite heating element 2 formed by carbonizing the polyimide film is placed in the oil guide element 1, and the outer wall of the graphite heating element 2 is attached to the inner wall of the oil guide element 1. After attachment, the oil guide element 1 is cut according to the pitch of the spiral profile of the graphite heating element 2, so that the oil guide element 1 also has a spiral shape after cutting, and the pitch of the spiral profile of the oil guide element 1 can be adjusted according to demand. The structure after cutting can be referred to Figure 3 .

[0070] See also Figure 5 Another embodiment of the present invention provides an aerosol generating device, including a housing 4 and the above-mentioned atomizing assembly, wherein a housing is provided with a containing cavity, the atomizing assembly is arranged in the containing cavity, and an air inlet and an air outlet communicating with the containing cavity are arranged on the housing, and the air inlet and the air outlet are both communicated with the atomizing assembly. Specifically, the mounting element 3 is arranged inside the housing, and the mounting element 3 is communicated with the air inlet and the air outlet, and the gas outside the housing can enter the mounting element 3 through the air inlet and be output through the air outlet. A power supply assembly 5 is provided inside the housing, and the two pin portions 22 of the graphite heating element 2 are respectively connected to the positive and negative electrodes of the power supply assembly, and the power supply assembly can provide electricity to the graphite heating element 2, so that the graphite heating element 2 dissipates heat. The housing is provided with a chamber for accommodating the oil body, and the chamber contains the oil body. The connector 12 of the oil guide element 1 contacts the oil body, so that the oil body can be introduced into the oil guide member 11 of the oil guide element 1 through the connector 12, so that the oil body in the oil guide member 11 can be heated by the graphite heating element 2 later, so that the oil body in the oil guide element 1 is heated and atomized. In addition, there is a passage for air circulation between the mounting element 3 and the chamber, so that the gas outside the housing can smoothly enter the mounting element 3.

[0071] When the above-mentioned aerosol generating device is used, the user can first drive the power supply assembly to supply power to the graphite heating element 2, so that the graphite heating element 2 heats the oil guiding element 1, and the oil in the oil guiding element 1 is heated and atomized. The user can then apply suction to the air outlet, so that the gas outside the housing enters the mounting element 3 through the air inlet, and mixes with the atomized gas generated by the oil guiding element 1, and the mixed gas is sucked out through the air outlet.

[0072] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An atomizing assembly, characterized in that: include: An oil guide element (1) is used to absorb and conduct oil, the oil guide element (1) is an internal hollow structure, and an air flow channel is formed inside the oil guide element (1); A graphite heating element (2), the graphite heating element (2) being arranged around the inner side surface of the oil guide element (1), and the graphite heating element (2) being in a spiral shape; The air flow channel has an air inlet (13) and an air outlet (14), and the thickness of the graphite heating element (2) gradually increases as the distance from the air inlet (13) increases.

2. The atomizer assembly according to claim 1, characterized in that: The oil guide element (1) is in a spiral shape, and the spiral graphite heating element (2) is attached to the spiral oil guide element (1).

3. The atomizer assembly according to claim 1, characterized in that: The pitch of the spiral profile of the graphite heating element (2) gradually increases as the distance from the air inlet (13) increases.

4. The atomizer assembly according to claim 1, characterized in that: The atomization assembly further comprises a mounting element (3), a mounting channel being arranged in the mounting element (3), and the oil guide element (1) being arranged around the inner side surface of the mounting element (3).

5. The atomizing assembly according to claim 4, characterized in that: The oil guide element (1) comprises an oil guide piece (11) and a connecting piece (12); the oil guide piece (11) is attached to the inner side surface of the mounting element (3), and the oil guide piece (11) is in a spiral shape; one end of the connecting piece (12) is connected to the oil guide piece (11), and the other end of the connecting piece (12) is located outside the mounting element (3); the pitch of the spiral profile of the oil guide piece (11) gradually increases as the distance from the connecting piece (12) increases.

6. The atomizer assembly according to claim 5, characterized in that: The material of the oil guide member is the same as that of the connecting member.

7. The atomizer assembly according to claim 5, characterized in that: The mounting element (3) is provided with a notch, and the connecting piece (12) passes through the notch.

8. The atomizer assembly according to claim 1, characterized in that: The graphite heating element (2) is hollowed out to form a through hole (23).

9. A method for preparing the atomizer assembly according to any one of claims 1 to 8, characterized in that: The following steps are involved: Providing a polyimide film, and performing a punching operation on the polyimide film; and Providing a positioning tube, and spirally attaching the punched polyimide film to the inner wall of the positioning tube; and Firing the polyimide film fixed in the positioning tube to carbonize the polyimide film to form a graphite heating element (2) having a spiral shape; and An oil guide element (1) is provided, the graphite heating element (2) is fixed in the oil guide element (1), and the oil guide element (1) is cut according to the appearance of the graphite heating element (2).

10. An aerosol generating device, characterized in that: It comprises a shell and an atomizer assembly as described in any one of claims 1 to 8, wherein a accommodating cavity is provided in the shell, the atomizer assembly is arranged in the accommodating cavity, and an air inlet and an air outlet communicating with the accommodating cavity are provided on the shell, and the air inlet and the air outlet are both communicated with the atomizer assembly.

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