Heating assembly and aerosol generating device

Abstract

The embodiment of the utility model belongs to the technical field of aerosol generating devices, and relates to a heating assembly and an aerosol generating device.The heating assembly comprises a heating body, and the inner wall of the heating body is constructed into a plurality of heating parts which are sequentially connected end to end and are at least partially spaced; the multiple spaced heating parts are used for guiding current to flow along a preset path, and a containing cavity used for containing smokable materials and allowing gas to circulate is defined by the multiple heating parts. According to the scheme provided by the invention, the gap between the heating parts is very small, so that the heating area is large, and the heating parts can guide the current to flow on the inner wall of the whole heating main body along the heating parts according to the preset path, so that the effect of uniformly heating the smokable material in the accommodating cavity is realized.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generating devices, and more specifically, to a heating component and an aerosol generating device. Background Art

[0002] The structure of the existing aerosol generating device is a nozzle, a heating component, and a base from top to bottom. The nozzle, the heating component, and the base have an air passage that passes through from top to bottom.

[0003] When using an aerosol generating device, a smokeable material is usually placed in the airway of the heating component. At this time, when the heating component is heated, the temperature of various parts thereof will be different, which will cause different degrees of heating of various parts of the smokeable material, and the effect of uniform heating cannot be achieved, which affects the atomization effect and user experience of the aerosol generating device. Summary of the invention

[0004] The technical problem to be solved by the embodiments of the present application is that the existing heating components cannot achieve the effect of uniform heating.

[0005] In order to solve the above technical problems, the embodiment of the present application provides a heating component capable of achieving uniform heating, which adopts the following technical solution:

[0006] A heating component is applied to an aerosol generating device, the heating component comprises a heating body, the side wall of the heating body is configured into a plurality of heating parts which are connected end to end and at least partially separated, the plurality of separated heating parts are used to guide the current to flow along a preset path, and the plurality of heating parts enclose a receiving cavity for accommodating an inhalable material and for gas circulation.

[0007] Furthermore, the heating body is arranged in a tubular shape, and a plurality of the heating parts are surrounded along the circumference of the heating body to form the accommodating cavity, and the plurality of the heating parts are spaced apart from each other along the circumference of the heating body.

[0008] Furthermore, the heating body has a first opening for inserting the smokeable material and a second opening located at the opposite end of the first opening, and a gap is formed between two adjacent heating parts, one end of the gap passes through the first opening or the second opening, and the other end of the gap extends to near the second opening or the first opening.

[0009] Furthermore, the heating assembly also includes an insulating filling piece arranged in the gap for enhancing the strength of the heating body.

[0010] Furthermore, the heating component also includes at least two leads, one of which is connected to the starting end of the heating part, and the other is connected to the end of the heating part.

[0011] Furthermore, the heating assembly further comprises a heat-insulating shell, and the heat-insulating shell is arranged around the outer surface of the heating body;

[0012] A heat-insulating cavity is arranged in the heat-insulating shell, and the heat-insulating cavity surrounds the heating body.

[0013] Correspondingly, the present application also provides an aerosol generating device, which includes the heating component as described above.

[0014] Furthermore, the aerosol generating device further comprises a base, wherein the base is provided with an airway and a top plate, wherein one end of the airway is connected to the accommodating cavity, and the other end is connected to the external environment;

[0015] The top plate is located at one end of the base close to the accommodating cavity, and the top plate is provided with a plurality of evenly distributed air inlet holes, through which the air passage is communicated with the accommodating cavity.

[0016] Furthermore, the aerosol generating device also includes an atomizing body and a flip cover, wherein the flip cover is rotatably connected to one end of the atomizing body away from the accommodating chamber and is used for rotating to control the opening and closing of the airway.

[0017] Furthermore, the aerosol generating device also includes a rotating shaft and a torsion spring. The rotating shaft passes through the base and the torsion spring. One end of the torsion spring abuts against the flip cover, and the other end abuts against the atomizing body, so as to reset the flip cover.

[0018] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0019] Because the heating parts in the solution provided in the present application are at least partially separated and connected end to end, the heating parts can guide the current to flow along the heating parts according to a preset path, that is, the current can spread throughout the inner wall of the entire heating body, thereby achieving the effect of uniformly heating the smokeable material located in the accommodating cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the solutions in the present application or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 is a schematic diagram of the structure of the heating component of an embodiment of the present application;

[0022] Figure 2 yes Figure 1 A three-dimensional partial cross-sectional view of the heating assembly;

[0023] Figure 3 is a schematic diagram of an explosion of an aerosol generating device according to an embodiment of the present application;

[0024] Figure 4 is a schematic structural diagram of an aerosol generating device (in use) according to an embodiment of the present application;

[0025] Figure 5 yes Figure 4 a side cross-sectional view of an aerosol generating device (not in use);

[0026] Figure 6 yes Figure 4 A schematic diagram of the structure of the lower cover and the flip cover of the aerosol generating device;

[0027] Figure 7 yes Figure 6 A schematic diagram of the structure of the middle flip cover;

[0028] Figure 8 yes Figure 6 Another structural schematic diagram of the middle flip cover.

[0029] Reference numerals:

[0030] The bracket 10, the housing 20, the inhalable material 30, the PCB board 40, the aerosol generating device 50, and the flip cover assembly 60;

[0031] Heating assembly 100, heating part 110, gap 111, heating body 120, insulation shell 130, insulation cavity 131, lead 140, first opening 150, second opening 160, base 200, air duct 210, top plate 220, air inlet 221, flip cover 300, first groove 310, flip cover air inlet 320, second groove 330, first surface 331, second surface 332, reinforcement part 340, first fixing part 350, second fixing part 360, limiting protrusion 370, rotating shaft 410, torsion spring 420, lower cover 500, air outlet 510, second slide groove 520, upper cover 600, heat sink 700, suction nozzle 800, battery 900. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0033] In this application, unless otherwise stated, directional words such as "upper" and "lower" generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inner" and "outer" refer to the outline of the device. In addition, in the description of this application, the term "including" means "including but not limited to". The terms first, second, third, etc. are used only as labels and do not impose numerical requirements or establish an order.

[0034] In this application, "and / or" describes the association relationship of associated objects, indicating that there may be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural.

[0035] In this application, "at least one" means one or more, and "plurality" means two or more. "At least one", "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, "at least one of a, b, or c", or "at least one of a, b, and c" can all mean: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, and c can be single or multiple.

[0036] Various embodiments of the present application may be presented in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity and should not be understood as a rigid limitation on the scope of the present application; therefore, the range description should be considered to have specifically disclosed all possible sub-ranges and single numerical values ​​within the range. For example, the range description from 1 to 6 should be considered to have specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, which apply regardless of the range. In addition, whenever a numerical range is indicated herein, it is meant to include any cited number (fractional or integer) within the indicated range.

[0037] Please refer to Figures 1 to 5 , Figure 1The Z direction is the up-down direction. The embodiment of the present application provides a heating component 100 including a heating body 120, the side wall of the heating body 120 is constructed into a plurality of heating parts 110 which are connected end to end in sequence and at least partially separated, and the plurality of separated heating parts 110 are used to guide the current to flow along a preset path, and the plurality of heating parts 100 are enclosed to form a receiving cavity for accommodating the inhalable material and for gas circulation. At this time, because the heating parts 110 in the solution provided by the present application are at least partially separated and each heating part 110 is connected end to end, the heating part 110 can guide the current to flow along the heating part 110 according to Figure 2 The preset path shown in the figure flows in a serpentine manner, that is, the current can extend Figure 2 and Figure 5 As shown by the middle arrow, the entire inner wall of the heating body 120 is spread over, thereby achieving the effect of uniformly heating the smokeable material located in the accommodating cavity.

[0038] Furthermore, the heating body 120 of the present application has a first opening 150 for inserting the smokeable material and a second opening 160 located at the opposite end of the first opening 150, and a gap 111 is formed between two adjacent heating parts 110, one end of the gap 111 passes through the first opening 150 or the second opening 160, and the other end of the gap 111 extends to near the second opening 160 or the first opening 150.

[0039] Please refer to Figures 1 to 3 , the gap 111 includes a first gap, a second gap and a third gap, and the first gap connects the upper edge and the lower edge of the side wall. The second gap (not marked in the figure) extends from the upper edge of the side wall to the lower edge, but there is a gap between it and the lower edge, that is, it is not connected to the lower edge. The third gap extends from the lower edge of the side wall to the upper edge, but there is a gap between it and the upper edge, that is, it is not connected to the upper edge. The second gap and the third gap are distributed at intervals. At this time, because the gap 111 will have a blocking effect on the current, the inner wall of the heating body is restricted by the gap 111 to form a current conduction channel, that is, the current will be connected along the heating part 110 in a serpentine shape and spread throughout the inner wall of the entire heating body, thereby achieving the effect of uniformly heating the smokeable material 30 located in the accommodating cavity.

[0040] It is understandable that the shape, size, and distribution position of the gap 111 can be adjusted according to actual needs, as long as the gap 111 can make the inner wall of the heating body form a heating portion 110 that is connected end to end and at least partially separated. For example, a spiral-shaped gap 111 can also be designed on the side wall, so that the gap 111 extends along the bottom of the inner wall of the heating body, spirally extends to the top of the side wall, and the side wall is limited to form a spirally ascending current conduction channel. At this time, the current can still flow through the inner wall of the entire heating body, that is, to achieve a uniform heating effect. The material of the heating body 120 includes but is not limited to one of nickel-chromium alloy, iron-chromium-aluminum alloy, stainless steel alloy, palladium, and graphene, or a combination thereof.

[0041] Please continue to refer to Figures 1 to 3 The heating body 120 is arranged in a tubular shape, and a plurality of heating parts 110 are enclosed along the circumference of the heating body 120 to form a receiving cavity, and the plurality of heating parts 110 are spaced from each other along the circumference of the heating body 120. The cross-section of the receiving cavity defined inside is circular, and can also be triangular, square or other shapes to adapt to different smokeable materials 30. The receiving cavity can also be divided into multiple sections, and the cross-sectional shapes of the multiple sections of the receiving cavity are different. At this time, the smokeable materials 30 of different shapes can enter the receiving cavity to different depths, so that the heating range of the smokeable material 30 can be controlled. At this time, the cross-section of the receiving cavity is circular. When the circumference is equal, the circle has the largest area. Therefore, the gas flow rate of the heating body 120 of the present application is large; at the same time, the gas can be evenly distributed on the inner wall of the heating body 120, so that the heating body 120 is evenly heated, thereby improving the service life of the heating component 100.

[0042] For example, the accommodating chamber is divided into two sections from top to bottom, the cross section of the upper section is a circle, the cross section of the lower section is an equilateral triangle, and the radius of the circle is equal to the midline of the triangle. At this time, the smokeable material 30 is divided into a first smokeable material and a second smokeable material, the heating portion 110 of the first smokeable material has a circular cross section, and the heating portion 110 of the second smokeable material has an equilateral triangle section and a circular section. Because the first smokeable material cannot penetrate into the lower section of the accommodating chamber, it can avoid that the part that does not need to be heated is damaged by heating. The second smokeable material can penetrate into the accommodating chamber, which can ensure its heating effect. In summary, the design of the accommodating chamber being divided into two sections can control the heating range of the smokeable material 30, and can also adapt to different smokeable materials 30.

[0043] For further information, please refer to Figure 1, the heating component 100 also includes at least two leads, one of which is connected to the starting end of the heating part 110, and the other is connected to the end of the heating part 110. When there is only one current conduction channel, the distance that the current can flow through is different as the positions of the two leads 140 are different, that is, the size of the area that the heating component 100 can heat will be different. The two leads 140 of the embodiment of the present application are respectively located at the starting end and the end of the heating part 110, which can make the current flow completely through the inner wall of the entire heating component 100, further improving the uniform heating effect of the heating component 100.

[0044] For further information, please refer to Figures 1 to 5 The heating component 100 further includes a heat-insulating outer shell 130, which is arranged around the outer surface of the heating body 120 to isolate the temperature. When the heating component 100 is working, the inner wall of the heating body 120 in the heating body 120 continues to heat up. At this time, the embodiment of the present application is provided with a heat-insulating outer shell 130, which can prevent the damage of other components caused by excessive temperature, and prevent the user from being scalded. It can also further improve the heating efficiency of the heating component 100 by heat preservation.

[0045] It is understandable that the heat-insulating shell 130 can be made of heat-insulating materials, including but not limited to aerogel, ceramic fiber, silicate material, foam plastic, perlite, expanded graphite, silicon aerogel, foam glass, mineral wool, etc., or any one or a combination thereof. In order to avoid the heating component 100 from being damaged due to excessive temperature, a heat-insulating structure can also be added to the outside of the heating component 100, for example, a heat-insulating layer that wraps the heating component 100 is provided in the aerosol generating device 50, and the heat is insulated by the heat-insulating layer. However, this method will make the production process of the aerosol generating device 50 more complicated, reduce the production efficiency of the aerosol generating device 50, and at the same time, it is not easy to maintain. The heat-insulating shell 130 of the embodiment of the present application surrounds the outer surface of the heating body 120 and can be integrally formed with the heating body 120. At this time, when assembling the aerosol generating device 50, only the heating component 100 can be installed without installing the heat-insulating structure, thereby improving the production efficiency. The heat-insulating shell 130 can also have multiple layers, and the heat is reduced by multiple layers to improve the heat insulation effect.

[0046] For further information, please refer to Figures 1 to 5The heat-insulating shell 130 includes a heat-insulating cavity 131, and the heat-insulating cavity 131 is arranged around the outer surface of the heating body 120 to isolate the temperature. The heat-insulating shell 130 can be a heat-insulating material itself, and / or can form a heat-insulating cavity 131 between the heating body 120, and the heat-insulating cavity 131 is a vacuum environment or filled with an inert gas. If a heat-insulating material is used as the heat-insulating shell 130, the production cost of the heating component 100 will increase. If an inert gas is used to fill the heat-insulating cavity 131, gas convection may also exist in the inert gas such as helium or argon, resulting in heat transfer. At the same time, there are molecules in the inert gas or air, and these molecules may scatter thermal radiation, thereby affecting the thermal insulation effect. When vacuum insulation is adopted, since there are no molecules in a vacuum, it will not be affected by gas convection and the scattering of thermal radiation can be almost ignored. In the embodiment of the present application, the insulation cavity 131 is set as a vacuum environment, which can further improve the insulation effect of the heating component 100, reduce production costs, avoid heat loss, and improve the heating effect of the heating component 100.

[0047] Furthermore, the heating body in the prior art is usually located on the outer wall of the smoke pipe, and the material to be smoked 30 is heated by conducting heat to the inner wall of the smoke pipe, so its energy consumption is high, and the insulation pressure around the smoke pipe is relatively large. The heating body 120 in the embodiment of the present application is directly in contact with the inserted material to be smoked 30, and can directly heat the material to be smoked 30, which can significantly improve the utilization rate of heat and reduce heat loss, thereby achieving energy saving. In addition, the outer side of the heating body 120 is provided with an insulating outer shell 130 fixed to it. The insulating outer shell 130 can avoid the heat loss of the heating body 120, and can make full use of the heat of the heating body 120 to heat the material to be smoked 30, thereby further improving the heating efficiency and reducing the energy consumption of the aerosol generating device 50. The material to be smoked 30 can be a cigarette, and the smoke pipe can be a component including an airway.

[0048] A plurality of depressions (not shown in the figure) may be provided in the insulation cavity 131. Since the thermal conductivity of a vacuum is worse than that of a solid material, the larger the volume of the insulation cavity 131, the better the insulation effect of the insulation cavity 131. However, simply increasing the volume of the insulation cavity 131 may result in a decrease in the structural strength of the heating component 100. However, by providing depressions in the insulation cavity 131 to increase the area of ​​the insulation cavity 131, since the depressions are small and uniform structural changes, after providing the depressions in the embodiment of the present application, the internal support points and stability of the heating body 120 or the insulation shell 130 do not change significantly, which can enhance the insulation effect of the insulation cavity 131 and avoid a significant decrease in the strength of the heating component 100.

[0049] Furthermore, the heating component 100 also includes an insulating filler (not shown in the figure), which is filled in the gap 111 to strengthen the strength of the heating body 120. Since the inner wall of the heating body is provided with a gap 111, and the gap 111 will reduce the strength of the heating body 120, in order to avoid deformation of the heating body 120, affecting the service life of the heating component 100. In the embodiment of the present application, an insulating filler is filled in the gap 111, and the material of the insulating filler includes but is not limited to any one of rubber, plastic, mica, ceramic, epoxy resin, silicone rubber, polytetrafluoroethylene (PTFE), asbestos, and glass fiber or a combination thereof. When the material of the insulating filler is an insulating material with high temperature resistance such as ceramic, porcelain insulator, epoxy resin, silicone rubber, polytetrafluoroethylene (PTFE), asbestos, and glass fiber, it can prevent the insulating material from melting and failing during the operation of the heating component 100. It is understandable that the insulating filler can also extend beyond the gap 111, that is, protrude from the inner wall of the heating body toward the axis of the accommodating cavity. At this time, a recess matching the insulating filler can be set on the heating period to achieve positioning and anti-mistake effects.

[0050] Accordingly, the present application also provides an aerosol generating device 50, please refer to Figures 2 to 4 , the aerosol generating device 50 includes the above-mentioned heating component 100. It is understandable that the aerosol generating device 50 may also include a housing 20, a bracket 10, an upper cover 600, a lower cover 500, a heat sink 700, a nozzle 800, and a PCB board 40. A third airway (not marked in the figure) is provided in the nozzle 800, one end of the third airway is connected to the accommodating cavity, and the other end is connected to the external environment, and can form a gas channel running through the aerosol generating device 50 with the accommodating cavity and the airway 210. The heat sink 700 can wrap the heating component 100 to further reduce the heat overflowed from the heating component 100. The bracket 10 is installed in the housing 20, and the bracket 10 is restricted in the housing 20 by the upper cover 600 and the lower cover 500, while the heating component 100 is installed on one side of the bracket 10, and the battery 900 is installed on the other side of the bracket 10. The lead wire 140 of the heating component 100 can be connected to the PCB board 40 and the battery 900 , and the start, stop and heating temperature of the heating component 100 can be controlled by the PCB board 40 .

[0051] When the aerosol generating device 50 is needed, the inhalable material 30 (containing aerosol) can be allowed to enter the accommodating chamber through the third air passage, and the heating body can surround the inhalable material 30. The button is pressed to control the PCB board 40 in the aerosol generating device 50, and the battery 900 is controlled by the PCB board 40 to provide electric energy to the heating body 120 through the lead 140, so that the heating body 120 continues to heat up. The heating body 120 begins to evenly heat and bake the inhalable material 30 from the outside to the inside. The light waves generated by the heating body 120 can also penetrate the inhalable material 30 to heat the aerosol inside the inhalable material 30. When the user inhales the aerosol, the normal temperature air enters the accommodating chamber from the air passage 210 of the base 200, and a high-temperature aerosol matrix is ​​formed inside the accommodating chamber for the user to inhale.

[0052] For further information, please refer to Figure 3 and Figure 4 The aerosol generating device 50 also includes a base 200, and the base 200 is provided with an airway 210 and a top plate 220. One end of the airway 210 is connected to the accommodating chamber, and the other end is connected to the external environment. The top plate 220 is located at one end of the base 200 close to the accommodating chamber, and the top plate 220 is provided with a plurality of evenly distributed air inlet holes 221, and the airway 210 is connected to the accommodating chamber through the air inlet holes 221. The aerosol generating device 50 in the prior art is prone to uneven heating of the inhalable material 30 and poor user experience due to the uneven distribution of gas when the gas circulates. In the embodiment of the present application, the base 200 is provided with a plurality of evenly distributed air inlet holes 221. At this time, the gas can flow from the outside through the airway 210 and enter the accommodating chamber through the air inlet holes 221 on the top plate 220. When the gas passes through the air inlet holes 221, the gas will be evenly divided because the air inlet holes 221 are evenly distributed, so that the inhalable material 30 can be evenly heated.

[0053] It is understandable that if the inhalable material 30 of the aerosol generating device 50 generates residue after being heated, the air inlet 221 can prevent the residue from slipping out of the airway 210, affecting the user experience and damaging the environment. Therefore, the aerosol generating device 50 of the embodiment of the present application can also prevent the residue from slipping out of the airway 210, and the residue can be cleaned by disassembling and installing the base 200. Of course, it is also possible to control the uniform distribution of gas by adding a structure similar to the top plate 220 in the accommodating chamber, but if this structure is set in the accommodating chamber, it will cause the residue to accumulate in the accommodating chamber, which is not convenient for cleaning. The heating component 100 is usually arranged inside the aerosol generating device 50 and cannot be taken out for cleaning, which makes it difficult to remove the residue.

[0054] Furthermore, the heating body 120 proposed in the present application is made of a thermosensitive material, that is, the heating body 120 is a thermistor, whose resistance value changes with temperature, and the temperature of the heating body 120 can be measured by using the resistance temperature coefficient of the thermosensitive material. Specifically, the heating body 120 can not only be used as a heating element, but also can be used in conjunction with the lead 140 and the PCB board 40 to measure the heating temperature. When working, one end of the lead 140 is connected to the heating body 120, and the other end is connected to the PCB board 40, and the heating temperature of the heating body 120 is obtained by measuring the resistance of the heating body 120. It can be seen that the heating body 120 proposed in the present application integrates heating and temperature measurement, which can simplify the structure and reduce costs.

[0055] For further information, please refer to Figure 3 The air inlet holes 221 are stacked and arranged radially along the air passage 210, and are axially symmetrically distributed, that is, the multiple air inlet holes 221 form a stacked and nested multi-layer ring. Compared with the distribution forms of the air inlet holes 221 in a matrix distribution or a polygonal distribution, the distribution mode of the air inlet holes 221 in the embodiment of the present application can be adapted to the cross-sectional shape of the accommodating cavity, so that the gas flows into the accommodating cavity in an evenly proportional manner, thereby further improving the uniform heating effect of the aerosol generating device 50.

[0056] For further information, please refer to Figures 3 to 5 , the aerosol generating device 50 also includes an atomizing body and a flip cover 300, which is rotatably connected to one end of the atomizing body away from the accommodating chamber, and is used to rotate to control the opening and closing of the airway 210. During the use of the aerosol generating device 50, dust often enters the accommodating chamber and the airway 210 due to long-term non-use. At this time, it will seriously affect the heating effect of the aerosol generating device 50 and the user experience. In the embodiment of the present application, a rotatable flip cover 300 is added, and the flip cover 300 can be flipped to open or close the accommodating chamber, so that the user can clean the accommodating chamber, and dust can also be prevented from entering. It is understandable that a flip cover 300 can also be set on the suction nozzle 800 part. At this time, by controlling the flip cover 300 on the base 200 and the flip cover 300 on the suction nozzle 800, the accommodating chamber and the airway 210 can be completely closed, further preventing the external environment from polluting the accommodating chamber and the airway 210. It is understandable that the rotation connection mode of the flip cover 300 is not limited to the connection modes such as bearings, sliding bearings, rotating shafts, hinges, etc.

[0057] For further information, please refer to Figure 3 to Figure 4The aerosol generating device 50 further includes a rotating shaft 410 and a torsion spring 420. The rotating shaft 410 is provided through the flip cover 300 and the torsion spring 420. One end of the torsion spring 420 abuts against the flip cover 300, and the other end abuts against the atomizing body, so as to reset the flip cover 300. After the flip cover 300 is flipped over, the user often needs to operate the flip cover 300 again to reset the flip cover 300, resulting in low efficiency of the aerosol generating device 50. In the embodiment of the present application, a torsion spring 420 is added, and the two ends of the torsion spring 420 abut against the flip cover 300 and the atomizing body, respectively. Therefore, during the operation of the flip cover 300, the flip cover 300 will be reset due to the recovery of the elastic deformation of the torsion spring 420, and no manual reset is required, thereby improving the efficiency of the aerosol generating device 50. It is understandable that the flip cover 300 can also be reset by using common springs, elastic members, etc. For example, a spring is provided at one end of the flip cover 300 away from the rotating shaft 410, one end of the spring abuts against the flip cover 300, and the other end abuts against the atomizing body. In this case, the flip cover 300 can also achieve the reset function, but the spring will affect the airflow effect of the accommodating cavity. The atomizing body can be Figure 2 The housing 20 may also be a lower cover 500 or other components.

[0058] Furthermore, in the present embodiment, the flip cover 300 and the lower cover 500 together constitute a flip cover assembly 60, which is used to allow outside air to enter the airway 210, so that during the user's inhalation process, the gas in the airway 210 can be used to carry the aerosol generated by atomization in the heating assembly 100 to flow out from the mouthpiece for the user to inhale.

[0059] In some embodiments, the lower cover 500 is provided with an air outlet 510, and the inner diameter of the air channel 210 gradually increases as the flip cover 300 approaches the air channel 210. In this way, the gas entering the air channel 210 from the second groove 330 is diffused, thereby improving the flow efficiency of the gas in the air channel 210, and further improving the gas outlet efficiency of the air outlet 510.

[0060] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution of the flip cover assembly 60 in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0061] See also Figures 4 to 8 The embodiment of the present application provides a flip cover assembly 60 applied to an aerosol generating device 10 , wherein the flip cover assembly 60 includes a lower cover 500 and a flip cover 300 , wherein the flip cover 300 is disposed on the lower cover 500 .

[0062] Among them, the lower cover 500 is provided with an air outlet 510, and the flip cover 300 is used to cover the air inlet end of the air outlet 510; in the direction of the flip cover 300 close to the air outlet 510, the flip cover 300 is sequentially provided with a first groove 310, a flip cover air inlet hole 320 and a second groove 330, and the first groove 310, the flip cover air inlet hole 320, the second groove 330 and the air outlet 510 are connected to each other.

[0063] It is understandable that in the present application, the external air may enter the air outlet 510 after passing through the first groove 310 , the flip cover air inlet 320 , and the second groove 330 in sequence.

[0064] Among them, by opening the first groove 310 and the second groove 330 at the two ends of the flip cover 300 away from and close to the lower cover 500 respectively, the flip cover 300 is thinned, and the raw materials for preparing the flip cover 300 are reduced, which is beneficial to the miniaturization of the aerosol generating device 10 using the flip cover assembly 60 of the embodiment of the present application; and the thinned first groove 310 and second groove 330 on the flip cover 300 respectively form a staggered step structure with the flip cover 300, so that the external gas is easier to converge at the first groove 310, and the gas in the flip cover air inlet 320 is easier to flow out at the second groove 330, thereby improving the air intake efficiency and air exhaust efficiency of the flip cover assembly 60, and then improving the atomization effect of the aerosol generating device 10 using the flip cover assembly 60 of the present application.

[0065] In some embodiments, see Figure 4 and Figure 8 The first groove 310 is a gas compression groove, which is used to compress the external gas and guide it into the flip cover air inlet hole 320.

[0066] Understandably, in order to reduce the amount of dust, foreign matter and other impurities entering the flip cover air inlet 320, the flip cover air inlet 320 is smaller in size than the first groove 310. In the present application, when the external gas enters the flip cover air inlet 320, the gas compression groove compresses the external gas to reduce the volume of the external gas, making it easier for the external gas to enter the flip cover air inlet 320, thereby improving the air intake efficiency of the external gas entering the flip cover air inlet 320, and further improving the suction effect of the aerosol generating device 10 to which the flip cover assembly 60 of the embodiment of the present application is applied.

[0067] In some embodiments, see Figures 6 to 8 , as the flip cover 300 approaches the gas outlet 510 , the inner diameter of the gas compression groove gradually decreases.

[0068] In this embodiment, the gas compression groove has an air inlet end connected to the outside atmosphere and an air outlet end connected to the air inlet end of the flip cover air inlet hole 320, wherein the inner diameter of the air inlet end of the gas compression groove is larger than the inner diameter of the air outlet end. Understandably, the air inlet end of the gas compression groove with a larger inner diameter can allow more outside gas to enter, thereby ensuring the air intake of the outside gas; and in the process of the outside gas flowing from the air inlet end of the gas compression groove to the air outlet end, the outside gas is gradually compressed, thereby reducing the volume of the outside gas, and is guided to flow toward the air inlet end close to the flip cover air inlet hole 320, thereby facilitating the outside gas to enter the flip cover air inlet hole 320, and effectively improving the air intake efficiency of the outside gas entering the flip cover air inlet hole 320.

[0069] In some embodiments, see Figure 6 and Figure 8 The second groove 330 is a gas diffusion groove, which is used to diffuse the gas in the flip cover air inlet hole 320 into the air outlet 510 .

[0070] In this embodiment, a gas diffusion groove is utilized to diffuse the gas flowing out from the air outlet end of the flip cover air inlet hole 320, thereby improving the flow efficiency of the gas flowing out of the flip cover air inlet hole 320, achieving diffusion and extraction of the gas within the flip cover air inlet hole 320, and improving the air outlet efficiency of the flip cover air inlet hole 320; and, since the air outlet efficiency of the air outlet end of the flip cover air inlet hole 320 is accelerated, the pressure at the air outlet end of the flip cover air inlet hole 320 is lower than the pressure at the air inlet end, thereby promoting the flow of the gas within the flip cover air inlet hole 320, and thereby improving the air intake efficiency of the external gas flowing into the flip cover air inlet hole 320.

[0071] In some embodiments, see Figures 4 to 6 , in the direction where the flip cover 300 approaches the gas outlet 510 , the inner diameter of the gas diffusion groove gradually increases.

[0072] In this embodiment, the gas diffusion groove has an inlet end connected to the outlet end of the flip cover inlet hole 320 and an outlet end connected to the inlet end of the outlet port 510, wherein the inner diameter of the inlet end of the gas diffusion groove is smaller than the inner diameter of the outlet end. It can be understood that the inner diameter of the gas diffusion groove from the inlet end to the outlet end gradually decreases, so that the gas from the inlet end of the gas diffusion groove toward the outlet end, the gas outlet of the gas diffusion groove gradually increases, and the gas discharge in the flip cover inlet hole 320 can be accelerated, thereby promoting the flow efficiency of the gas in the flip cover inlet hole 320, and further improving the intake efficiency and outlet efficiency of the flip cover inlet hole 320.

[0073] In some embodiments, see Figures 4 to 8, the depth ratio of the first groove 310 to the second groove 330 is 0.3 to 1. Within this range, as the depth ratio of the first groove 310 to the second groove 330 gradually increases, the gas outlet efficiency of the gas in the flip cover air inlet 320 entering the first groove 310 and the gas intake efficiency of the external gas entering the flip cover air inlet 320 through the first groove 310 are gradually balanced, thereby ensuring the atomization effect of the aerosol generating device 10 using the flip cover assembly 60 of the present application.

[0074] Optionally, a depth ratio between the first groove 310 and the second groove 330 is selected from a range formed by any one of 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, or any two of them.

[0075] In some embodiments, see Figures 4 to 8 The number of the flip cover air inlet holes 320 is at least three, and each of the flip cover air inlet holes 320 is arranged around the center of the first groove 310. In this way, external air can enter the second groove 330 from the flip cover air inlet holes 320 in different directions of the first groove 310, thereby effectively increasing the air intake and air outlet of the flip cover air inlet holes 320.

[0076] Preferably, the number of the flip cover air inlet holes 320 is six, and the six flip cover air inlet holes 320 are arranged in an array around the center of the first groove 310, so that the first groove 310 is arranged with flip cover air inlet holes 320 in all directions, so that after the outside air enters the first groove 310, the outside air can enter the flip cover air inlet holes 320 from different directions on the first groove 310, thereby effectively increasing the air intake of the flip cover air inlet holes 320; and, the gas in the flip cover air inlet holes 320 can also enter the second groove 330 from different directions, thereby effectively increasing the air outlet of the flip cover air inlet holes 320.

[0077] In some embodiments, see Figures 6 to 8 The second groove 330 includes a first surface 331 and a second surface 332 connected to the first surface 331, and the second surface 332 is arranged around the first surface 331; the flip cover assembly 60 also includes a reinforcing portion 340, and the reinforcing portion 340 is respectively connected and fixed to the first surface 331 and the second surface 332.

[0078] It is understandable that since the first groove 310 and the second groove 330 are provided on the flip cover 300, the structural strength of the flip cover 300 is reduced; in this embodiment, the reinforcing portion 340 is used to connect the first surface 331 and the second surface 332 in the second groove 330 to enhance the structural strength and impact resistance of the second groove 330, thereby extending the service life of the flip cover 300.

[0079] In some embodiments, see Figures 6 to 8 , the number of the reinforcing part 340 is at least one. As the number of the reinforcing parts 340 increases, the structural strength of the flip cover 300 increases.

[0080] Preferably, the number of the reinforcing parts 340 is two, and the two reinforcing parts 340 are relatively arranged in the second groove 330. In this way, the two reinforcing parts 340 can not only further enhance the structural strength of the flip cover 300, but also prevent the reinforcing parts 340 from occupying too much space in the second groove 330, thereby ensuring the air outlet of the second groove 330, and then ensuring the air intake of the air outlet 510.

[0081] In some embodiments, see Figures 6 to 8 The flip cover assembly 60 also includes a switch structure, which is arranged between the flip cover 300 and the lower cover 500; the flip cover 300 and the lower cover 500 are rotatably connected, and the switch structure is used to drive the flip cover 300 to open or cover the air inlet end of the air outlet 510.

[0082] In this embodiment, the switch structure can enable the flip cover 300 to cover the air inlet end of the sealed air outlet 510, thereby reducing the entry of impurities such as dust and foreign matter into the air duct 210 from the air outlet 510; it can also drive the flip cover 300 to open the air inlet end of the air outlet 510 to clean the air outlet 510, thereby ensuring the suction effect of the aerosol generating device 10 using the flip cover assembly 60 of the embodiment of the present application.

[0083] In some embodiments, the air outlet 510 is a mounting port for connecting with the device body 200 , thereby achieving communication between the air channel 210 and the second groove 330 .

[0084] In some embodiments, see Figure 4 and Figure 8 A limiting protrusion 370 for limiting the closing position of the flip cover 300 is provided on one side of the flip cover 300 close to the lower cover 500 or on one side of the lower cover 500 close to the flip cover 300 to ensure the accuracy of the closing position of the flip cover 300.

[0085] In some embodiments, see Figures 2 to 8 The lower cover 500 is provided with a first slide groove (not marked), and the flip cover 300 is slidably installed in the first slide groove; the switch structure includes a driving member (not marked), and a first fixing portion 350 and a first fixing portion 360 used in conjunction with each other; the output end of the driving member is connected to the flip cover 300; the first fixing portion 350 and the first fixing portion 360 are respectively installed on the lower cover 500 and the flip cover 300.

[0086] In this embodiment, when the first fixing portion 350 and the first fixing portion 360 are connected in cooperation, the flip cover 300 covers the air inlet end of the air outlet 510; when the flip cover 300 slides in the first slide groove in a direction away from the first fixing portion 350, the first fixing portion 360 on the flip cover 300 is separated from the first fixing portion 350 on the lower cover 500, and at this time, the flip cover 300 is driven by the driving member to open the air inlet end of the air outlet 510.

[0087] In some embodiments, see Figures 4 to 8 The first groove 310 on the flip cover 300 can facilitate the operator to push the flip cover 300 to slide on the first slide groove, thereby improving the convenience of operation.

[0088] In some embodiments, the mating connection manner between the first fixing portion 350 and the first fixing portion 360 includes but is not limited to a snap connection, a plug connection, a mortise and tenon connection, etc.

[0089] Preferably, the first fixing portion 350 and the first fixing portion 360 are connected in a snap-fit ​​connection; wherein, one of the first fixing portion 350 and the first fixing portion 360 is a snap-fit, and the other is a slot, and the flip cover 300 covers the air inlet end of the air outlet 510 through the snap-fit ​​cooperation between the snap-fit ​​and the slot.

[0090] In some embodiments, the first fixing portion 360 may be disposed at one end or side of the flip cover 300 , which is not specifically limited herein.

[0091] For example, if the first fixing portion 360 is disposed at one end of the flip cover 300, and the other end of the flip cover 300 is rotatably connected to the lower cover 500; in actual application, when the flip cover 300 slides on the first slide groove, the flip cover 300 can move facing or facing away from the first fixing portion 360, thereby facilitating the connection and separation of the first fixing portion 360 on the flip cover 300 and the first fixing portion 350 on the lower cover 500. For another example, if the first fixing portion 360 is disposed on the side of the flip cover 300, the base body can have a larger first slide groove in this case to provide enough space for the sliding of the flip cover 300.

[0092] Further, the first fixing portion 360 is disposed on the side of the flip cover 300 , and there may be multiple groups of first fixing portions 350 and first fixing portions 360 , and the multiple groups of first fixing portions 350 and first fixing portions 360 are distributed on both sides of the flip cover 300 .

[0093] In some embodiments, the flip cover 300 is rotatably connected to the lower cover 500 via a rotating shaft (not marked in the figure); the lower cover 500 is provided with a second sliding groove 520, and the rotating shaft is slidably installed in the second sliding groove 520, and the sliding direction of the rotating shaft is parallel to the sliding direction of the flip cover 300. In this way, the flip cover 300 can realize both rotation and sliding movement.

[0094] In some embodiments, the driving member is a torsion spring, which is sleeved on the rotating shaft, and the output end of the torsion spring is connected to an end of the flip cover 300 close to the air outlet 510 .

[0095] It can be understood that when the first fixing part 350 is connected to the first fixing part 360, a limit is formed on the flip cover 300, so that the flip cover 300 covers the air inlet end of the air outlet 510. At this time, the torsion spring is compressed by the flip cover 300 to store energy; when the first fixing part 350 is separated from the first fixing part 360, the flip cover 300 is not limited. At this time, the torsion spring uses its stored energy to drive the flip cover 300 to rotate and open, thereby realizing automatic opening of the flip cover 300.

[0096] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

[0097] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, combinations, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present application, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A heating assembly, applied to an aerosol generating device, characterized in that: The heating assembly includes a heating body, and the side wall of the heating body is constructed into a plurality of heating parts that are connected end to end and at least partially separated, the plurality of separated heating parts are used to guide the current to flow along a preset path, and the plurality of heating parts are enclosed to form a accommodating cavity for accommodating the smokeable material and for gas circulation.

2. The heating assembly according to claim 1, characterized in that The heating body is arranged in a tubular shape, and a plurality of the heating parts are surrounded along the circumference of the heating body to form the accommodating cavity, and the plurality of the heating parts are spaced apart from each other along the circumference of the heating body.

3. The heating assembly according to claim 2, characterized in that The heating body has a first opening for inserting the smokeable material and a second opening located at the opposite end of the first opening. A gap is formed between two adjacent heating parts, one end of the gap passes through the first opening or the second opening, and the other end of the gap extends to near the second opening or the first opening.

4. The heating assembly according to claim 3, characterized in that The heating assembly also includes an insulating filling piece arranged in the gap and used to enhance the strength of the heating body.

5. The heating assembly according to claim 1, characterized in that The heating component also includes at least two lead wires, one of which is connected to the starting end of the heating portion, and the other is connected to the end of the heating portion.

6. The heating assembly according to claim 1, characterized in that The heating assembly further comprises a heat-insulating shell, which is arranged around the outer surface of the heating body; A heat-insulating cavity is arranged in the heat-insulating shell, and the heat-insulating cavity surrounds the heating body.

7. An aerosol generating device, characterized in that: The aerosol generating device comprises a heating assembly according to any one of claims 1 to 6.

8. The aerosol generating device according to claim 7, characterized in that: The aerosol generating device further comprises a base, wherein the base is provided with an airway and a top plate, wherein one end of the airway is connected to the accommodating cavity, and the other end is connected to the outside; The top plate is located at one end of the base close to the accommodating cavity, and the top plate is provided with a plurality of evenly distributed air inlet holes, through which the air passage is communicated with the accommodating cavity.

9. The aerosol generating device according to claim 8, characterized in that The aerosol generating device further comprises an atomizing body and a flip cover, wherein the flip cover is rotatably connected to one end of the atomizing body away from the accommodating cavity and is used for rotating to control the opening and closing of the airway.

10. The aerosol generating device according to claim 9, characterized in that: The aerosol generating device further comprises a rotating shaft and a torsion spring. The rotating shaft penetrates the base and the torsion spring. One end of the torsion spring abuts against the flip cover and the other end abuts against the atomizing body, so as to reset the flip cover.

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