Atomizing devices and aerosol generating apparatus

Abstract

This application provides an atomizing device and an aerosol generating apparatus. The aerosol generating apparatus includes a power supply structure and an atomizing device, with the power supply structure providing power to the atomizing device. The atomizing device has an airflow channel communicating with the external atmosphere. The atomizing device includes a main shell, a preheating structure, and an atomizing core. The main shell has a receiving cavity for containing the atomizing medium. The preheating structure surrounds the receiving cavity and heats the inner wall of the receiving cavity to preheat and melt the atomizing medium within it. The atomizing core is installed in the main shell and has a porous structure. The liquid inlet surface of the atomizing core communicates with the receiving cavity, and the atomizing surface of the atomizing core communicates with the airflow channel. The atomizing core heats and atomizes the melted atomizing medium to generate an aerosol. This application can gradually preheat and melt the atomizing medium through the preheating structure and gradually heat and atomize it through the atomizing core, thus preserving the original flavor of the atomizing medium to the greatest extent and ensuring a consistent vaping experience.

Description

Technical Field

[0001] This application belongs to the field of aerosol generation technology, and more specifically, relates to an atomizing device and an aerosol generating apparatus. Background Technology

[0002] An aerosol generator is a device used to heat and atomize an atomizing medium to generate an aerosol. The atomizing medium can be solid, liquid, or paste-like. For paste-like media, open-type atomizers are generally used. The paste-like medium contained within the atomizer is heated and atomized to generate an aerosol by heating the bottom and / or perimeter of the atomizer. However, the atomization of paste-like media is a concentration process; low-boiling-point substances evaporate first, followed by high-boiling-point substances, resulting in inconsistent inhalation taste and a tendency for charring and burning at the end of the inhalation. Utility Model Content

[0003] The purpose of this application is to provide an atomizing device and an aerosol generating apparatus to solve the technical problem in the prior art that the atomizing device easily leads to inconsistent inhalation taste before and after inhalation.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: An atomizing device is provided, the atomizing device having an airflow channel communicating with the external atmosphere. The atomizing device includes a main shell, a preheating structure, and an atomizing core. The main shell has a receiving cavity for containing an atomizing medium. The preheating structure is arranged around the receiving cavity and is used to heat the inner peripheral wall of the receiving cavity to preheat and melt the atomizing medium in the receiving cavity. The atomizing core is installed on the main shell and has a porous structure. The liquid inlet surface of the atomizing core communicates with the receiving cavity, and the atomizing surface of the atomizing core communicates with the airflow channel. The atomizing core is used to heat and atomize the melted atomizing medium to generate an aerosol.

[0005] In some embodiments, the first distance between the preheating structure and the atomizing core along the axial direction of the receiving cavity ranges from 3mm to 5mm.

[0006] In some embodiments, the preheating structure extends axially along the receiving cavity;

[0007] The atomizing device also includes two electrodes;

[0008] Alternatively, the preheating structure may include N preheating zones connected sequentially along the axial direction of the receiving cavity, and the atomizing device may also include N+1 electrodes.

[0009] In some embodiments, the preheating structure includes a film thickness resistor, a heating film, a conductive metal coating, or a conductive glass layer.

[0010] In some embodiments, the preheating structure is disposed on the inner and / or outer circumferential surfaces of the main housing.

[0011] In some embodiments, the atomizing device further includes a preheating cylinder, which is sleeved outside the main housing, and the preheating structure is disposed on the inner and / or outer circumferential surfaces of the preheating cylinder.

[0012] In some embodiments, the preheating structure includes an excitation coil, which is sleeved outside the main housing, and the main housing is made of a soft magnetic alloy material;

[0013] Alternatively, the atomizing device may further include a preheating cylinder, which is sleeved outside the main housing, and the excitation coil is sleeved outside the preheating cylinder. The main housing or the preheating cylinder is made of a soft magnetic alloy material.

[0014] In some embodiments, the main housing further has an air guide channel located beside the receiving cavity, the airflow channel including the air guide channel.

[0015] In some embodiments, the atomizing device further includes a base and a mouthpiece, the mouthpiece and the base being respectively installed at opposite ends of the main housing; the base and the main housing together enclose an atomizing chamber communicating with the air guiding channel, the base having an air inlet channel communicating with the atomizing chamber, the mouthpiece having an air outlet channel communicating with the air guiding channel, and the airflow channel including the air inlet channel, the atomizing chamber, the air guiding channel and the air outlet channel.

[0016] On the other hand, this application also provides an aerosol generating device, including a power supply structure and the aforementioned atomizing device, wherein the power supply structure is used to supply power to the atomizing device.

[0017] The beneficial effects of the atomizing device and aerosol generating apparatus provided in this application are as follows: By setting a preheating structure surrounding the receiving cavity and an atomizing core installed on the main housing, the atomizing core has a porous structure, with the liquid inlet surface of the atomizing core communicating with the receiving cavity and the atomizing surface of the atomizing core communicating with the airflow channel. The above settings allow the atomizing medium to be gradually preheated and melted through the preheating structure to enhance the fluidity of the atomizing medium, and the atomizing medium to be gradually heated and atomized through the atomizing core. In other words, the atomizing medium can be slowly melted and atomized in each puff, which means that all components in the atomizing medium can be atomized synchronously, thereby maximizing the preservation of the flavor of the atomizing medium itself and ensuring the consistency of the inhalation experience. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A three-dimensional structural schematic diagram of the aerosol generating device provided in the embodiments of this application;

[0020] Figure 2 A longitudinal cross-sectional view of the aerosol generating apparatus provided in an embodiment of this application;

[0021] Figure 3 A longitudinal sectional view of the atomizing device provided in the first embodiment of this application;

[0022] Figure 4 This is a longitudinal cross-sectional view of the atomizing device provided in the second embodiment of this application;

[0023] Figure 5 A longitudinal sectional view of the atomizing device provided in the third embodiment of this application;

[0024] Figure 6 This is a longitudinal sectional view of the atomizing device provided in the fourth embodiment of this application;

[0025] Figure 7 This is a longitudinal sectional view of the atomizing device provided in the fifth embodiment of this application;

[0026] Figure 8 This is a schematic diagram of a preheating structure for an atomizing device provided in the fifth embodiment of this application;

[0027] Figure 9 This is a schematic diagram of another preheating structure for the atomizing device provided in the fifth embodiment of this application;

[0028] Figure 10 for Figure 3 Enlarged schematic diagram of the connection between the nozzle and the main housing of the atomizing device;

[0029] Figure 11 for Figure 3 A schematic diagram of the nozzle structure in a mid-range atomizing device;

[0030] Figure 12 for Figure 3 Enlarged schematic diagram of the connection between the base and the main housing of the atomizing device.

[0031] The following are the labeling elements in the figure:

[0032] 1. Atomizing device; 100. Main housing; 110. Receiving cavity; 200. Preheating structure; 200a. Heating film; 201a. Film line; 200b. Excitation coil; 210. Preheating zone; 300. Atomizing core; 310. Liquid inlet surface; 320. Atomizing surface; 400. Preheating cylinder; 500. Outer cover; 600. Base; 610. Second annular plate; 620. Second flange; 630. Third flange 700, Nozzle; 710, Connecting part; 711, Cover plate; 712, First flange; 713, First annular plate; 720, Suction part; 800, Electrode; 900, Airflow channel; 910, Air inlet channel; 920, Atomizing chamber; 930, Air guide channel; 940, Air outlet channel; 941, Connecting hole; 942, Air guide groove; 943, Air outlet; 2, Power supply structure; D1, First distance. Detailed Implementation

[0033] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0034] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0035] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] As described in the background section, for paste-like media, open-type atomizers are generally used. The paste-like media is contained within the atomizer, and the paste-like media is heated and atomized to generate an aerosol by heating the bottom and / or periphery of the atomizer. However, for open-type atomizers, the paste-like media is essentially cooked all at once within the atomizer. Its atomization is a concentration process, with low-boiling-point substances evaporating first and high-boiling-point substances evaporating later. In the later stages, most of the high-boiling-point substances remain, resulting in inconsistent inhalation taste at the beginning and end, and a tendency for scorching and burning to occur at the end.

[0038] To address the aforementioned issues, this application provides an atomizing device 1 and an aerosol generating apparatus. The atomizing core 300 gradually absorbs and heats the melted atomizing medium to generate an aerosol, enabling the atomizing medium to be atomized in each puff, allowing all components in the atomizing medium to be atomized simultaneously, preserving the flavor of the paste to the greatest extent, and ensuring a consistent smoking experience.

[0039] Please see Figure 1 The aerosol generating apparatus provided in the embodiments of this application will now be described. The aerosol generating apparatus includes a power supply structure 2 and an atomizing device 1. The power supply structure 2 is used to supply power to the atomizing device 1. The atomizing device 1 is used to contain the atomizing medium, and the atomizing device 1 can heat and atomize the atomizing medium to generate an aerosol after heating.

[0040] Please see Figures 1 to 3 The atomizing device 1 provided in the embodiments of this application will now be described. The atomizing device 1 is mainly used to preheat and melt a paste-like medium, and then heat and atomize it to generate an aerosol. In other embodiments, the atomizing device 1 can also be used to heat and atomize a solid medium, a liquid medium, or a solid-liquid mixture to form an aerosol.

[0041] The atomizing device 1 has an airflow channel 900 communicating with the external atmosphere. The atomizing device 1 includes a main housing 100, a preheating structure 200, and an atomizing core 300. The main housing 100 has a receiving cavity 110 for containing the atomizing medium. The preheating structure 200 is arranged around the receiving cavity 110 and is used to heat the inner peripheral wall of the receiving cavity 110 to preheat and melt the atomizing medium in the receiving cavity 110. The atomizing core 300 is installed on the main housing 100 and has a porous structure. The liquid inlet surface 310 of the atomizing core 300 is communicating with the receiving cavity 110, and the atomizing surface 320 of the atomizing core 300 is communicating with the airflow channel 900. The atomizing core 300 is used to heat and atomize the melted atomizing medium to generate an aerosol.

[0042] Both the preheating structure 200 and the atomizing core 300 are electrically connected to the power supply structure 2, which supplies power to both. When the preheating structure 200 is energized, it generates heat and heats the inner wall of the receiving cavity 110, thereby preheating and melting the atomizing medium within the cavity 110. This improves the fluidity of the atomizing medium, allowing it to gradually flow towards the liquid inlet surface 310 of the atomizing core 300. When the atomizing core 300 is energized, it gradually heats and atomizes the atomizing medium flowing into it, producing aerosol at the atomizing surface 320. Since the airflow channel 900 is connected to the atomizing surface 320, the external atmosphere entering the airflow channel 900 can carry the aerosol and deliver it for the user to inhale.

[0043] The atomizing device 1 in this embodiment features a preheating structure 200 surrounding the receiving cavity 110 and an atomizing core 300 mounted on the main housing 100. The atomizing core 300 has a porous structure, with its liquid inlet surface 310 communicating with the receiving cavity 110 and its atomizing surface 320 communicating with the airflow channel 900. This configuration allows the atomizing medium to be gradually preheated and melted by the preheating structure 200, enhancing its fluidity. The atomizing core 300 also gradually heats and atomizes the medium, ensuring that the atomizing medium melts slowly and is atomized in each puff. This allows all components in the atomizing medium to be atomized simultaneously, maximizing the preservation of the original flavor of the atomizing medium and ensuring a consistent inhalation experience. Furthermore, the atomizing device draws in the atomizing medium via airflow, making the amount of vapor per puff controllable and the dosage adjustable by the number of puffs.

[0044] In this application, for ease of description, the end of each structure in the atomizing device 1 closest to the user's lips is referred to as the proximal end, and the end furthest from the user's lips is referred to as the distal end. The vertical extension direction from the proximal end to the distal end of the atomizing device 1 is referred to as the longitudinal direction of the atomizing device 1.

[0045] In some embodiments, please refer to Figure 3 The top side of the receiving cavity 110 is closed, and the distal center of the main housing 100 has a mounting hole. The atomizing core 300 is installed at the mounting hole, the liquid inlet surface 310 of the atomizing core 300 is located in the receiving cavity 110, and the atomizing surface 320 of the atomizing core 300 is located in the airflow channel 900. The preheating structure 200 is arranged around the periphery of the receiving cavity 110, and the axial direction of the preheating structure 200 is parallel to the longitudinal direction of the atomizing device 1. It can be understood that in other embodiments of this application, the preheating structure 200 is arranged around the receiving cavity 110 with its axial direction perpendicular to the longitudinal direction of the atomizing device 1, and the atomizing core 300 can also be installed on one of the peripheral sidewalls of the main housing 100, wherein the peripheral sidewall refers to the sidewall of the main housing 100 along the circumferential direction.

[0046] In some embodiments, the heating temperature range of the preheating structure 200 on the inner peripheral wall of the receiving cavity 110 is 70°-100°. For example, the heating temperature of the preheating structure 200 on the inner peripheral wall of the receiving cavity 110 can be 70°, 75°, 80°, 85°, 90°, 95°, or 100°. By limiting the heating temperature range of the preheating structure 200 on the inner peripheral wall of the receiving cavity 110, the temperature transferred by the inner peripheral wall of the receiving cavity 110 to the atomizing medium is sufficient to preheat and melt the atomizing medium, but without reaching the boiling point of the atomizing medium, thus preventing some components of the atomizing medium from being atomized before the atomizing core 300 heats and atomizes it. It also ensures that the inner peripheral wall of the receiving cavity 110 is not kept at a high temperature for a prolonged period, thereby preventing scorching, eliminating the need for cleaning, and allowing for disposal after use.

[0047] Specifically, the heating resistance of the preheating structure 200 can be designed to meet the heating temperature requirements of the preheating structure 200. Alternatively, the current and / or voltage of the preheating structure 200 can be controlled by the power supply structure 2 to ensure that the heating temperature of the preheating structure 200 meets the preheating requirements. Or, the distance between the preheating structure 200 and the inner peripheral wall of the receiving cavity 110 can be adjusted to ensure that the heating temperature of the preheating structure 200 meets the preheating requirements.

[0048] In some embodiments, please refer to Figure 4 Along the axial direction of the receiving cavity 110, the first distance D1 between the preheating structure 200 and the atomizing core 300 ranges from 3mm to 5mm. For example, the first distance D1 between the preheating structure 200 and the atomizing core 300 can be 3mm, 3.2mm, 3.4mm, 3.6mm, 3.8mm, 4.0mm, 4.2mm, 4.6mm, 4.8mm, or 5mm, etc.

[0049] It should be noted that the first distance D1 between the preheating structure 200 and the atomizing core 300 here refers to the first distance D1 between the side of the preheating structure 200 facing the atomizing core 300 and the side of the atomizing core 300 facing the preheating structure 200 along the axial direction of the receiving cavity 110. In this embodiment, by limiting the range of the first distance D1 between the preheating structure 200 and the atomizing core 300, the temperature at the overlap of the two temperature fields of the preheating structure 200 and the atomizing core 300 at the wall surface of the main housing 100 does not exceed 100°C, so as to avoid the atomizing medium being atomized before entering the atomizing core 300.

[0050] Specifically, in the actual design process, the range of the first distance D1, the heating range of the preheating structure 200 and the heating range of the atomizing core 300 can be controlled separately so that the temperature at the intersection of the two temperature fields of the preheating structure 200 and the atomizing core 300 on the wall of the main shell 100 does not exceed 100℃.

[0051] In this application, during the atomization process of the atomizing medium, the preheating function of the preheating structure 200 can be activated before the atomizing coil 300 is started. By gradually melting the atomizing medium and atomizing it puff by puff, the flavor-preserving paste is released in a slow-release manner, greatly improving the taste. Alternatively, the atomizing coil 300 can be activated simultaneously with the preheating structure 200. By controlling the power supply of the atomizing coil 300, it can first heat the atomizing medium at a low temperature to improve its fluidity. Then, by controlling the power supply of the atomizing coil 300, it can heat the atomizing medium at a relatively high temperature for atomization. This ensures that each vaping session provides only a few puffs and retains the solid paste medium to the greatest extent, releasing the flavor-preserving paste in a slow-release manner, greatly improving the taste.

[0052] In some embodiments, please refer to Figure 3 The preheating structure 200 extends along the axial direction of the receiving cavity 110. The preheating structure 200 can cover most of the area of ​​the receiving cavity 110 along the axial direction of the receiving cavity 110, thereby satisfying the heating and atomization of the atomizing medium at various points in the receiving cavity 110.

[0053] In this application, the heating method of the preheating structure 200 can be set according to actual needs, and it can be whole heating or segmented heating.

[0054] In some embodiments, please refer to Figure 8 The atomizing device 1 also includes two electrodes 800, which are a positive electrode 800 and a negative electrode 800, respectively. The two electrodes 800 are connected between the preheating structure 200 and the power supply structure 2. The power supply structure 2 electrically controls the preheating structure 200 as a whole, thereby adjusting the heating temperature at various points of the preheating structure 200.

[0055] In other embodiments of this application, please refer to Figure 9 The preheating structure 200 includes N preheating zones 210 sequentially distributed along the axial direction of the receiving cavity 110. The atomizing device 1 also includes N+1 electrodes 800, wherein N electrodes 800 are electrically connected to each of the preheating zones 210, and the other electrode 800 is electrically connected to one of the preheating zones 210. Each electrode 800 is also electrically connected to the power supply structure 2. Specifically, N electrodes 800 may be positive electrodes and the other electrode 800 may be negative electrodes, or N electrodes 800 may be negative electrodes and the other electrode 800 may be positive electrodes.

[0056] During preheating, the preheating structure 200 is heated sequentially from bottom to top. For example, only the bottommost preheating zone 210 is heated initially. As usage progresses, the first and second preheating zones 210 are heated, and so on, until all N preheating zones 210 are heated simultaneously. This configuration ensures that the fluidity of the atomizing medium at the bottom reaches its optimal state, and that the atomizing medium in the receiving cavity 110 can be gradually preheated and melted, and atomized in each mouthful. This allows the flavor-preserving paste to be released in a slow-release manner, greatly improving the taste.

[0057] In this application, the heating principle of the preheating structure 200 can be varied, and the assembly method is also different for different forms of preheating structure 200. The different preheating structures 200 will be described in detail below.

[0058] In some embodiments, the preheating structure 200 operates on the principle of resistance heating and is attached to a wall surface to achieve heating. For example, the preheating structure 200 includes a heating film 200a, which is attached to a wall surface to heat the main housing 100. The heating film 200a is typically a thin film material with heating function, generally composed of a substrate material and a heating coating. It can be directly or indirectly attached to the surface of the object to be heated, generating heat through the application of electricity to achieve the heating purpose.

[0059] Specifically, the heating film 200a includes multiple film lines 201a sequentially distributed along the axial direction of the receiving cavity 110. Each film line 201a extends circumferentially along the main housing 100, and the film lines 201a are connected in series and / or in parallel. The temperature of the heating film 200a is controlled by the TCR (Temperature Coefficient of Resistance) characteristics of the film lines 201a, so that the preheating temperature of the preheating structure 200 on the inner peripheral wall of the receiving cavity 110 is controlled at 70℃-100℃, and the temperature at the junction of each temperature field is also kept between 70℃ and 100℃.

[0060] For example, the preheating structure 200 of the resistance heating principle can also be a film-thickness resistor, a conductive metal coating, or a conductive glass layer. Among them, a film-thickness resistor is a resistor formed by coating or printing a relatively thick layer of resistive material (such as carbon film resistor, metal foil, etc.) on a certain wall surface, and then performing processes such as sintering. Its film layer is relatively thick and has specific resistive properties, which are used to control the current and voltage in the circuit.

[0061] Conductive metal coatings are created by depositing a thin metal film on a wall surface using techniques such as physical vapor deposition (PVD) or chemical vapor deposition (CVD) to provide electrical conductivity. The coating is usually thin and its main function is to conduct electricity.

[0062] The conductive glass layer has advantages such as being transparent and visible, capable of conducting electricity and heating, and having a pure taste.

[0063] In some embodiments, please refer to Figure 3 The preheating structure 200 is disposed on the inner and / or outer circumferential surfaces of the main housing 100. It should be noted that the inner circumferential surface of the main housing 100 refers to the inner circumferential surface of the main housing 100 corresponding to the receiving cavity 110, that is, the inner circumferential surface of the receiving cavity 110.

[0064] The preheating structure 200 can be located on either the inner or outer circumferential surface of the main housing 100. Since the preheating structure 200 performs better the closer it is to the inner circumferential wall of the receiving cavity 110, it is optimal to locate it on the inner circumferential surface of the main housing 100. In this case, the heating temperature of the preheating structure 200 can be controlled between 70℃ and 100℃, ensuring that the preheating temperature of the atomizing medium in the receiving cavity 110 reaches 70℃-100℃, achieving optimal energy efficiency. When the preheating structure 200 is located on the outer circumferential surface of the main housing 100, due to the wall thickness of the main housing 100, to maintain the preheating temperature of the inner circumferential wall of the receiving cavity 110 at 70℃-100℃, the heating temperature of the preheating structure 200 needs to be approximately 10℃ higher than that of the inner circumferential wall of the receiving cavity 110, i.e., controlled between 80℃ and 110℃. Of course, in other embodiments, the preheating structure 200 may be provided on both the inner and outer circumferential surfaces of the main housing 100, and this is not the only limitation.

[0065] In some embodiments, please refer to Figure 5 The atomizing device 1 also includes a preheating cylinder 400, which is sleeved outside the main housing 100. A preheating structure 200 is disposed on the inner and / or outer circumferential surfaces of the preheating cylinder 400. In this embodiment, the preheating structure 200 heats the preheating cylinder 400, and the heat from the preheating cylinder 400 is transferred to the main housing 100, thereby transferring the heat to the inner circumferential wall of the receiving cavity 110 to preheat the atomizing medium.

[0066] In some of these embodiments, please refer to Figure 5 The preheating structure 200 is located on the inner circumferential surface of the preheating cylinder 400. Since the preheating structure 200 and the inner circumferential wall of the receiving cavity 110 are separated by the wall thickness of the main shell 100 and the gap between the main shell 100 and the preheating cylinder 400, the heating temperature of the preheating structure 200 needs to be about 20°C higher than the inner circumferential wall of the receiving cavity 110, that is, the heating temperature of the preheating structure 200 needs to be controlled between 90°C and 120°C.

[0067] In other embodiments, please refer to Figure 6The preheating structure 200 is located on the outer circumferential surface of the preheating cylinder 400. Since the preheating structure 200 and the inner circumferential wall of the receiving cavity 110 are separated by the wall thickness of the preheating cylinder 400, the wall thickness of the main shell 100, and the gap between the main shell 100 and the preheating cylinder 400, the heating temperature of the preheating structure 200 needs to be about 30°C higher than the inner circumferential wall of the receiving cavity 110, that is, the heating temperature of the preheating structure 200 needs to be controlled between 100°C and 130°C.

[0068] Please refer to this application. Figures 3 to 6 To ensure that the easily accessible parts of the atomizing device 1 do not exceed the human body's acceptable temperature of 55°C, an outer cover 500 can be installed outside the main housing 100 or the preheating cylinder 400. The outer cover 500 protects the main housing 100 or the preheating cylinder 400 and has a heat insulation effect.

[0069] Specifically, in the embodiment where the preheating structure 200 is located in the main housing 100, the preheating cylinder 400 may be omitted, and the outer cover 500 may be directly placed over the outside of the main housing 100. In the embodiment where the preheating structure 200 is located in the preheating cylinder 400, the outer cover 500 may be placed over the outside of the preheating cylinder 400.

[0070] Optionally, the outer cover 500 can be made of metallic or non-metallic materials. When the outer cover 500 is made of non-metallic materials, the temperature of the non-metallic outer cover 500 must be ≤55℃. When the outer cover 500 is made of metallic materials, the temperature of the metallic outer cover 500 must be ≤48℃.

[0071] In addition, depending on the complexity of the process and the requirements of cost control, a preheating structure 200 can be set on the inner wall of the outer cover 500. By controlling the gap between the inner wall of the outer cover 500 and the outer wall of the main shell 100, the heat transfer effect can be guaranteed.

[0072] In other embodiments of this application, the preheating structure 200 can also be heated by other means, such as electromagnetic induction heating. For details, please refer to... Figure 7 The atomizing device 1 includes a main housing 100 and a preheating cylinder 400, with the preheating cylinder 400 fitted over the main housing 100. The preheating structure 200 includes an excitation coil 200b fitted over the preheating cylinder 400. The main housing 100 or the preheating cylinder 400 is made of a soft magnetic alloy material. When a high-frequency alternating current (typically 20-50kHz) is applied to the excitation coil 200b, a rapidly changing alternating magnetic field is generated. At this time, the soft magnetic alloy material (such as iron-chromium alloy, iron-silicon alloy, etc.) acts as an inductor in the magnetic field, and eddy currents are generated inside due to the cutting of magnetic lines of force, thereby heating the main housing 100. Furthermore, an outer cover 500 is provided outside the preheating cylinder 400 to protect the excitation coil 200b and achieve heat insulation.

[0073] When the main shell 100 is made of soft magnetic alloy material, the heating temperature of the main shell 100 needs to be ensured to be within the range of 70℃-100℃; when the preheating cylinder 400 is made of soft magnetic alloy material, the heating temperature of the preheating cylinder 400 needs to be ensured to be within the range of 90℃-120℃.

[0074] In addition, in other embodiments, the excitation coil 200b may also be located between the main housing 100 and the preheating cylinder 400, and the main housing 100 may be made of a soft magnetic alloy material, in which case the outer cover 500 may not be required.

[0075] In some embodiments, please refer to Figure 3 The main housing 100 also has an air guide channel 930 located beside the receiving cavity 110, and the airflow channel 900 includes the air guide channel 930. In this embodiment, by forming both the air guide channel 930 and the receiving cavity 110 in the main housing 100, and by placing the air guide channel 930 beside the receiving cavity 110, that is, by not penetrating the receiving cavity 110, there is no need to set a central tube in the receiving cavity 110. This not only saves on the material and assembly costs of the central tube, but also makes the receiving cavity 110 spacious, preventing highly viscous solid, solid-liquid mixture, or liquid paste or oil media from sticking to the outer wall of the central tube and failing to fall to the atomizing core 300.

[0076] In some embodiments, please refer to Figure 3 The atomizing device 1 also includes a base 600 and a mouthpiece 700, which are respectively installed at opposite ends of the main housing 100. The base 600 and the main housing 100 together enclose an atomizing chamber 920 communicating with the air guide channel 930. The base 600 has an air inlet channel 910 communicating with the atomizing chamber 920, and the mouthpiece 700 has an air outlet channel 940 communicating with the air guide channel 930. The airflow channel 900 includes the air inlet channel 910, the atomizing chamber 920, the air guide channel 930, and the air outlet channel 940. The base 600 facilitates the installation of the atomizing core 300 and also facilitates the formation of the atomizing chamber 920, the air inlet channel 910, and the air guide channel 930. Furthermore, the mouthpiece 700 facilitates the formation of the air outlet channel 940 and allows for easy inhalation by the user. It is understood that in other embodiments of this application, the nozzle 700 and / or the base 600 may also be configured to be integrally connected with the main housing 100, and this is not the only one.

[0077] In some embodiments, please refer to Figure 3 and Figure 10The suction nozzle 700 is sealed to the main housing 100, and the suction nozzle 700 blocks the proximal opening of the receiving cavity 110. That is, there is no proximal seal on the receiving cavity 110 in the main housing 100, which simplifies the structure of the main housing 100. Of course, in other embodiments, the proximal opening of the receiving cavity 110 can be sealed with a sealing element when designing the main housing 100, and then the suction nozzle 700 can be installed.

[0078] In some embodiments, please refer to Figure 10 and Figure 11 The nozzle 700 includes a connecting part 710 and a suction part 720. The connecting part 710 is supported on the main housing 100 and blocks the proximal opening of the receiving cavity 110. The connecting part 710 is connected to the air guide channel 930. The suction part 720 is used for user suction. The suction part 720 extends outside the main housing 100 and is connected to the connecting part 710.

[0079] Specifically, the connecting part 710 includes a cover plate 711, a first flange 712, and a first annular plate 713. The cover plate 711 is supported on the main housing 100 and blocks the proximal opening of the receiving cavity 110. The first flange 712 is cylindrical and protrudes from the periphery of the cover plate 711. The first annular plate 713 protrudes from the proximal inner circumferential surface of the first flange 712. The suction part 720 is cylindrical and is connected to the proximal end surface of the first annular plate 713. The cover plate 711 has a connecting hole 941. The cover plate 711, the first annular plate 713, and the first flange 712 enclose a guide groove 942. The suction part 720 has an outlet hole 943 at its center. The connecting hole 941, the guide groove 942, and the outlet hole 943 are connected in sequence, and the connecting hole 941, the guide groove 942, and the outlet hole 943 together form an outlet channel 940.

[0080] Specifically, the preheating cylinder 400 is sleeved on the outside of the main housing 100 and at least part of the first flange 712 to shield and protect the connection position between the nozzle 700 and the main housing 100.

[0081] In some embodiments, please refer to Figure 12 The base 600 includes a second annular plate 610, a second flange 620, and a third flange 630. The second flange 620 is formed on the outer periphery of the proximal end face of the second annular plate 610 and on the outer periphery of the distal end face of the second annular plate 610. The second flange 620 abuts against the outer peripheral wall of the main housing 100 along the axial direction. The second flange 620, the second annular plate 610, and the proximal side of the main housing 100 enclose the aforementioned atomizing chamber 920. The air intake channel 910 is disposed through the second annular plate 610 and the third flange 630. The third flange 630 is connected to the power supply structure 2.

[0082] The atomizing device of this application can be filled with a large amount of atomizing medium at one time, making it easy to carry and providing users with a pocket-sized device that is convenient to carry when going out.

[0083] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An atomizing device, characterized in that, The atomizing device has an airflow channel communicating with the external atmosphere. The atomizing device includes a main shell, a preheating structure, and an atomizing core. The main shell has a receiving cavity for containing the atomizing medium. The preheating structure is arranged around the receiving cavity and is used to heat the inner peripheral wall of the receiving cavity to preheat and melt the atomizing medium in the receiving cavity. The atomizing core is installed on the main shell. The atomizing core has a porous structure. The liquid inlet surface of the atomizing core communicates with the receiving cavity, and the atomizing surface of the atomizing core communicates with the airflow channel. The atomizing core is used to heat and atomize the melted atomizing medium to generate an aerosol.

2. The atomizing device as described in claim 1, characterized in that, Along the axial direction of the receiving cavity, the first distance between the preheating structure and the atomizing core ranges from 3mm to 5mm.

3. The atomizing device as described in claim 1, characterized in that, The preheating structure extends axially along the receiving cavity; The atomizing device also includes two electrodes; Alternatively, the preheating structure may include N preheating zones connected sequentially along the axial direction of the receiving cavity, and the atomizing device may also include N+1 electrodes.

4. The atomizing device according to any one of claims 1 to 3, characterized in that, The preheating structure includes a film thickness resistor, a heating film, a conductive metal coating, or a conductive glass layer.

5. The atomizing device as described in claim 4, characterized in that, The preheating structure is located on the inner and / or outer circumferential surfaces of the main shell.

6. The atomizing device as described in claim 4, characterized in that, The atomizing device also includes a preheating cylinder, which is sleeved outside the main housing, and the preheating structure is located on the inner and / or outer circumferential surfaces of the preheating cylinder.

7. The atomizing device according to any one of claims 1 to 3, characterized in that, The preheating structure includes an excitation coil; The excitation coil is sleeved outside the main housing, and the main housing is made of soft magnetic alloy material; or, the atomizing device further includes a preheating cylinder, which is sleeved outside the main housing, and the excitation coil is sleeved outside the preheating cylinder, and the main housing or the preheating cylinder is made of soft magnetic alloy material.

8. The atomizing device according to any one of claims 1 to 3, characterized in that, The main housing also has an air guide channel located beside the receiving cavity, and the air flow channel includes the air guide channel.

9. The atomizing device as described in claim 8, characterized in that, The atomizing device also includes a base and a mouthpiece, the mouthpiece and the base being respectively installed at opposite ends of the main housing; the base and the main housing together enclose an atomizing chamber communicating with the air guiding channel, the base having an air inlet channel communicating with the atomizing chamber, the mouthpiece having an air outlet channel communicating with the air guiding channel, and the airflow channel including the air inlet channel, the atomizing chamber, the air guiding channel and the air outlet channel.

10. An aerosol generating device, characterized in that, It includes a power supply structure and an atomizing device as described in any one of claims 1 to 9, wherein the power supply structure is used to supply power to the atomizing device.

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