Heating device and aerosol generator

Abstract

This application provides a heating device and an aerosol generator, belonging to the technical field of aerosol generators. The heating device is used in an inhalation device, which includes a cup for holding an aerosol matrix. The heating device includes an outer shell, a flow guiding structure, and a heating element. A first cavity is formed within the outer shell, and a first air inlet is provided on the outer shell. The flow guiding structure is installed in the first cavity and has a receiving cavity formed within it. A second air inlet and an air outlet communicating with the receiving cavity are provided on the flow guiding structure. The heating element is disposed in the receiving cavity. By placing the heating element in the receiving cavity of the flow guiding structure, and ensuring that the airflow entering from the first air inlet passes through the receiving cavity before exiting the outer shell, it is beneficial for the airflow to fully contact the heating element, thereby increasing the temperature of the airflow flowing through the heating device. Because the heating element is placed in the receiving cavity, the situation where the aerosol matrix easily remains on the heating element when using the aerosol generator can be avoided.

Description

Technical Field

[0001] This application belongs to the field of aerosol generator technology, and particularly relates to a heating device and an aerosol generator. Background Technology

[0002] An aerosol generator is a device used to heat an aerosol matrix to generate aerosols. Some existing aerosol generators use charcoal to heat the aerosol matrix. This method requires igniting the charcoal, which is cumbersome, and leaves behind carbon ash residue that is difficult to clean. Others use an external power source to power an internal heating element to heat the aerosol matrix. However, because the heating element is close to the aerosol matrix, over time, aerosol matrix residue can easily accumulate on the heating element, affecting its heating efficiency. Furthermore, the residue on the heating element is difficult to clean. Utility Model Content

[0003] The purpose of this application is to provide a heating device and an aerosol generator to solve the technical problem that some aerosol generators in the prior art are prone to leaving aerosol matrix residue on the heating element during use, which affects the heating effect of the heating element.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: The first aspect of this application provides a heating device for use in an inhalation device, the inhalation device including a cup for holding an aerosol matrix, and the heating device including:

[0005] The outer shell has a first cavity formed inside it, and a first air inlet is provided on the outer shell.

[0006] A flow guiding structure is installed in the first cavity. A receiving cavity is formed inside the flow guiding structure. A second air inlet and an air outlet connected to the receiving cavity are provided on the flow guiding structure. Gas entering from the first air inlet can flow into the receiving cavity through the second air inlet.

[0007] Heating element, the heating element is disposed in the accommodating cavity.

[0008] In some implementations, the second air inlet and air outlet are located on opposite sides of the heating element, and the second air inlet and air outlet are staggered.

[0009] In some implementations, the heating element is spiral-shaped, with the heating element spirally coiled around its central axis, which extends along the length of the heating element.

[0010] In some implementations, the accommodating cavity is annular, and the heating element is positioned along the circumference of the accommodating cavity along its length.

[0011] In some implementations, the outer casing is provided with a clearance hole, one end of the flow guiding structure is exposed to the outside through the clearance hole, and one end of the air outlet is opened to the end face of the end of the flow guiding structure exposed outside the clearance hole.

[0012] In some implementations, the flow guiding structure includes a first flow guiding section and a second flow guiding section. An annular groove is formed on the second flow guiding section, and the heating element is located in the annular groove. One end of the first flow guiding section blocks the annular groove so that the two form a receiving cavity. A plurality of second air inlets are provided on the first flow guiding section, and the plurality of second air inlets are spaced apart along the circumference of the first flow guiding section. A plurality of air outlets are provided on the second flow guiding section, and the plurality of air outlets are spaced apart along the circumference of the second flow guiding section.

[0013] In some implementations, the circumferential side of the second guide portion has a limiting plate, and the limiting plate and the end of the first guide portion away from the second guide portion respectively cooperate with two inner sides opposite to the outer shell to limit the orientation of the guide structure in the outer shell along the distribution direction of the first and second guide portions.

[0014] In some implementations, the limiting plate is sealed to the inner side of the housing; and / or, the end of the first guide portion away from the second guide portion is sealed to the inner side of the housing.

[0015] In some implementations, a second cavity is formed inside the outer casing, the second cavity being arranged circumferentially along the first cavity, and the heating device also includes a control board disposed in the second cavity, the control board being connected to the heating element.

[0016] In some implementations, the outer shell forms a receiving space for placing the cup, the receiving space is connected to the vent, and the second cavity is arranged circumferentially around the receiving space.

[0017] A second aspect of this application provides an aerosol generator, including an inhalation device and a heating device provided by any of the above-described technical solutions, wherein the heating device is supported on the cup body of the inhalation device.

[0018] The beneficial effects of this application are as follows: by placing the heating element in the accommodating cavity of the flow guiding structure, and by ensuring that the airflow entering from the first air inlet passes through the accommodating cavity before exiting the outer casing, it is beneficial for the airflow to fully contact the heating element, thereby increasing the temperature of the airflow flowing through the heating device, so as to fully heat the aerosol matrix; in addition, since the heating element is placed in the accommodating cavity, it is possible to avoid the situation where the aerosol matrix is ​​easily left on the heating element when using the aerosol generator, so as to ensure the heating effect of the heating element. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the structure of an aerosol generator provided in some embodiments of this application;

[0021] Figure 2 Explosion diagrams of aerosol generators provided in some embodiments of this application;

[0022] Figure 3 This is a schematic diagram of the structure of a heating device provided in some embodiments of this application;

[0023] Figure 4 This is a cross-sectional schematic diagram of a heating device provided in some embodiments of this application;

[0024] Figure 5 This is a cross-sectional schematic diagram of the heating device and the cup body provided in some embodiments of this application;

[0025] Figure 6 This is a cross-sectional schematic diagram of a heating device provided in some embodiments of this application;

[0026] Figure 7 This is a schematic diagram of the structure of the support frame provided in some embodiments of this application;

[0027] Figure 8 This is a schematic diagram of the structure of the cover portion provided in some embodiments of this application;

[0028] Figure 9 This is a schematic diagram of the structure of the support portion provided in some embodiments of this application;

[0029] Figure 10 A cross-sectional schematic diagram of the support frame and the first heating element provided in some embodiments of this application;

[0030] Figure 11 A front view schematic diagram of a first heating element provided for some embodiments of this application;

[0031] Figure 12 A cross-sectional schematic diagram of the main housing provided for some embodiments of this application;

[0032] Figure 13 An exploded schematic diagram of the main casing provided for some embodiments of this application.

[0033] The following are the labeling elements in the figure:

[0034] 100 - Aerosol generator; 200 - Aerosol matrix;

[0035] 10 - Heating device; 20 - Suction device;

[0036] 1-Outer shell; 2-Flow guiding structure; 3-Heating element; 4-First seal; 5-Second seal; 6-Third seal;

[0037] 11-First air inlet; 12-Avoidance hole; 13-First cavity; 14-Second cavity; 15-Accommodation space; 16-First shell; 17-Second shell; 18-Third shell; 19-Matching cylinder;

[0038] 161 - End of opening;

[0039] 171 - Second main body section; 172 - Second end section;

[0040] 181 - Third main body section; 182 - Third end section;

[0041] 21-First guide section; 22-Second guide section; 23-Accommodation cavity;

[0042] 211-Second air inlet; 212-Support cylinder; 213-Side baffle; 214-Limiting groove; 215-First protrusion;

[0043] 221-Air outlet; 222-Limiting plate; 223-Annular groove; 224-Extension; 225-Bottom of bracket; 226-Inner annular cylinder; 227-Outer annular cylinder; 228-Limiting protrusion; 229-Second protrusion;

[0044] 231 - Upper accommodating cavity surface; 232 - Lower accommodating cavity surface; 233 - Proximal accommodating cavity surface; 234 - Distal accommodating cavity surface;

[0045] 201 - Cup body; 202 - Inhalation tube. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings. The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0047] In the description of this application, it should be understood that the terms "length", "width", "thickness", "top", "bottom", "inner", "outer", "upper", "lower", "left", "right", 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.

[0048] To facilitate a clear description of the technical solutions of this application, the terms "first" and "second" are used to distinguish identical or similar items with essentially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and that the terms "first" and "second" do not necessarily imply that they are different.

[0049] In this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0051] It should be noted that, in this application, the words "in one embodiment," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in one embodiment," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "in one embodiment," "exemplarily," and "for example" is intended to present the relevant concepts in a specific manner.

[0052] Please see Figures 1-2 , Figure 1 This is a schematic diagram of the structure of an aerosol generator 100 provided in some embodiments of this application. Figure 2 An exploded schematic diagram of an aerosol generator 100 provided in some embodiments of this application.

[0053] Please see Figure 1 and Figure 2The aerosol generator 100 provided in this application embodiment includes an inhalation device 20 and a heating device 10, with the heating device 10 disposed at one end of the inhalation device 20.

[0054] Please see Figure 2 A cup body 201 is provided at one end of the inhalation device 20. The cup body 201 is used to hold the aerosol matrix 200. The heating device 10 is located at the end of the inhalation device 20 where the cup body 201 is provided. The heating device 10 is used to heat the aerosol matrix 200 in the cup body 201.

[0055] Please see Figure 2 The diagram illustrates that the inhalation device 20 includes an inhalation tube 202. When the user inhales through the inhalation tube 202, external airflow can enter the inhalation device 20 through the heating device 10. The aerosol generated by the heating device 10 heating the aerosol matrix 200 can flow into the interior of the inhalation device 20 with the airflow. After being filtered by the liquid inside the inhalation device 20, the aerosol flows to the inhalation tube 202.

[0056] Please see Figures 3-5 , Figure 3 This is a schematic diagram of the structure of the heating device 10 provided in some embodiments of this application. Figure 4 This is a cross-sectional schematic diagram of the heating device 10 provided in some embodiments of this application. Figure 5 This is a cross-sectional schematic diagram of the heating device 10 and the cup body 201 provided in some embodiments of this application.

[0057] Please see Figure 4 The heating device 10 provided in this embodiment includes a housing 1, a flow guiding structure 2, and a heating element 3. Please refer to... Figure 4 The outer shell 1 has a first cavity 13 inside, the flow guiding structure 2 is disposed in the first cavity 13, and the heating element 3 is disposed on the flow guiding structure 2.

[0058] Please see Figure 4 The outer shell 1 is provided with a first air inlet 11. When the user inhales through the air inlet tube 202, the external airflow can flow into the first cavity 13 through the first air inlet 11.

[0059] Please see Figure 4 A cavity 23 is formed within the flow guiding structure 2, and the heating element 3 is disposed within the cavity 23. Please refer to... Figure 4 The flow guide structure 2 is provided with a second air inlet 211 that communicates with the accommodating cavity 23. Gas entering the first cavity 13 from the first air inlet 11 can flow into the accommodating cavity 23 through the second air inlet 211. Please refer to... Figure 4 One end of the vent 221 is connected to the accommodating cavity 23. The gas flowing into the accommodating cavity 23 passes through the heating element 3 and is discharged from the vent 221.

[0060] In some examples, the number of heating elements 3 is at least one, and when the number of heating elements 3 is two or more, each heating element 3 is disposed in the accommodating cavity 23.

[0061] In some examples, the heating element 3 may include a heating wire or a heating mesh.

[0062] See some examples. Figure 4 The outer shell 1 is provided with a clearance hole 12. One end of the flow guiding structure 2 is exposed outside the outer shell 1 through the clearance hole 12. One end of the vent 221 is opened to the end face of the end of the flow guiding structure 2 exposed outside the clearance hole 12. Alternatively, in other examples, the vent 221 can be formed on the flow guiding structure 2 and the outer shell 1. That is, the vent 221 includes a first hole segment and a second hole segment. The first hole segment and the second hole segment are connected. The first hole segment is provided on the flow guiding structure 2 and is connected to the accommodating cavity 23. The second hole segment is provided on the outer shell 1.

[0063] In this embodiment, by placing the heating element 3 inside the accommodating cavity 23 of the flow guiding structure 2, and by ensuring that the airflow entering the first cavity 13 from the first air inlet 11 passes through the accommodating cavity 23 before exiting the outer shell 1, the airflow can fully contact the heating element 3, thereby increasing the temperature of the airflow flowing through the heating device 10 to fully heat the aerosol matrix. In addition, since the heating element 3 is placed inside the accommodating cavity 23, the situation where the aerosol matrix 200 easily remains on the heating element 3 when using the aerosol generator 100 can be avoided, thus ensuring the heating effect of the heating element 3.

[0064] In some embodiments, see Figure 4 and Figure 5 An extension 224 is formed on the end face of the flow guide structure 2 facing the cup body 201, extending into the cup body 201. The extension 224 is located in the middle region of the end face of the flow guide structure 2.

[0065] Please see Figure 5 The solid arrows indicate the direction of airflow. External airflow can flow into the first cavity 13 through the first air inlet 11, carry away the heat from the heating element 3 after passing through the heating element 3, and exit through the air outlet 221 to the cup body 201. The hot air flowing to the cup body 201 flows into the suction device 20 through the air passage in the middle of the cup body 201. In this embodiment, an extension 224 is provided on the end face of the guide structure 2 facing the cup body 201 to prevent the airflow from flowing along the dashed arrows and into the air passage in the middle of the cup body 201 after exiting through the air outlet 221. This would be detrimental to the heating effect of the high-temperature hot air exiting through the air outlet 221 on the aerosol matrix 200 inside the cup body 201.

[0066] In this embodiment, by setting an extension 224 on the end face of the flow guide structure 2 facing one end of the cup body 201, the flow direction of the hot airflow discharged from the air outlet 221 can be affected, which facilitates the flow of the airflow to the aerosol matrix 200 and ensures the heating effect on the aerosol matrix 200.

[0067] Please see Figures 6-11 , Figure 6 This is a cross-sectional schematic diagram of the heating device 10 provided in some embodiments of this application. Figure 7 This is a schematic diagram of the flow guiding structure 2 provided in some embodiments of this application. Figure 8 This is a schematic diagram of the structure of the first guide section 21 provided in some embodiments of this application. Figure 9 This is a schematic diagram of the structure of the second guide section 22 provided in some embodiments of this application. Figure 10 This is a cross-sectional schematic diagram of the flow guiding structure 2 and the heating element 3 provided in some embodiments of this application. Figure 11 This is a front view schematic diagram of the heating element 3 provided in some embodiments of this application.

[0068] In some embodiments, see Figure 11 The heating element 3 is spiral-shaped, meaning it is a spiral heating wire. Please refer to [link / reference]. Figure 11 The central axis of the heating element 3 is indicated by the dashed line L. The central axis extends along the length of the heating element 3, and the heating element 3 is spirally coiled around the central axis.

[0069] In some examples, the spacing between two adjacent spiral turns in the heating element 3 along the central axis is 0~2mm. For example, the spacing between two adjacent spiral turns in the heating element 3 along the central axis can be set to 0~0.2mm, 0.2~0.4mm, 0.4~0.8mm, 0.8~1mm, 1~1.2mm, 1.2~1.4mm, 1.4~1.6mm, 1.6~1.8mm, or 1.8~2mm, etc.

[0070] In this embodiment, by setting the heating element 3 in a spiral shape, the heating area can be increased and the heating efficiency can be improved.

[0071] In some embodiments, the receiving cavity 23 on the flow guiding structure 2 is annular, and the length direction of the heating element 3 is along the circumferential direction of the receiving cavity 23. Specifically, please refer to Figure 6 The cavity wall of the accommodating cavity 23 includes an upper accommodating cavity surface 231, a lower accommodating cavity surface 232, a proximal accommodating cavity surface 233, and a distal accommodating cavity surface 234. Please refer to [link / reference]. Figure 6The upper accommodating cavity surface 231 and the lower accommodating cavity surface 232 are arranged opposite each other in the vertical direction, and the proximal accommodating cavity surface 233 and the distal accommodating cavity surface 234 are arranged opposite each other in the radial direction of the guide structure 2. The upper accommodating cavity surface 231, the lower accommodating cavity surface 232, the proximal accommodating cavity surface 233 and the distal accommodating cavity surface 234 are all annular surfaces.

[0072] In some examples, one end of the vent 221 is opened to the lower receiving cavity surface 232, and one end of the second vent 211 is opened to the upper receiving cavity surface 231; or, in other examples, one end of the vent 221 may be opened to the lower receiving cavity surface 232, and one end of the second vent 211 may be opened to the distal receiving cavity surface 234.

[0073] In this embodiment, the accommodating cavity 23 on the flow guiding structure 2 is arranged in an annular shape, which facilitates the setting of multiple air outlets 221 connected to the accommodating cavity 23, and at the same time, allows the air entering from the second air inlet 211 to fully contact the heating element 3 and then be discharged from the air outlet 221.

[0074] In some embodiments, see Figure 4 The second air inlet 211 and the air outlet 221 are located on opposite sides of the heating element 3, and the second air inlet 211 and the air outlet 221 are staggered.

[0075] Regarding the misalignment of the second air inlet 211 and the air outlet 221, it can be understood that when the second air inlet 211 is projected onto the cavity wall surface where the air outlet 221 is located, the second air inlet 211 does not coincide with the air outlet 221, nor does it intersect with the air outlet 221.

[0076] In some examples, one end of the air outlet 221 is opened to the lower accommodating cavity surface 232, and one end of the second air inlet 211 is opened to the upper accommodating cavity surface 231. Multiple second air inlets 211 are spaced apart on the guide structure 2 in the circumferential direction, and multiple air outlets 221 are spaced apart on the guide structure 2 in the circumferential direction. Each second air inlet 211 is offset from the air outlet 221. For example, it can be configured that when the second air inlet 211 is projected onto the lower accommodating cavity surface 232 where the air outlet 221 is located, the projection falls on the position between two adjacent air outlets 221.

[0077] In some examples, the shape of the second air inlet 211 may be annular, square, or elliptical, etc.; and / or, the shape of the air outlet 221 may be annular, square, or elliptical, etc.

[0078] In this embodiment, by setting the second air inlet 211 and the air outlet 221 to be staggered, the time for airflow to flow in the accommodating cavity 23 is increased, so as to facilitate the airflow to fully absorb the heat generated by the heating element 3.

[0079] In some embodiments, see Figure 6 The second air inlet 211 on the flow guide structure 2 is directly opposite the first air inlet 11 on the outer casing 1.

[0080] See some examples. Figure 4 The outer casing 1 is provided with two or more first air inlets 11, which are spaced apart along the circumferential direction.

[0081] In some examples, please participate Figure 4 The first air inlet 11 is elongated; or, in other examples, the first air inlet 11 may be circular or elliptical.

[0082] In some examples, the sum of the cross-sectional areas of each first air inlet 11 may be set to be no less than the sum of the cross-sectional areas of each second air inlet 211.

[0083] In this embodiment of the application, by setting the second air inlet 211 to face the first air inlet 11 on the outer shell 1, the airflow flowing in from the first air inlet 11 on the outer shell 1 can quickly flow to the second air inlet 211.

[0084] In some embodiments, the number of heating elements 3 may be one; or, in other embodiments, the number of heating elements 3 may be two or more. In this case, the heating elements 3 may be arranged sequentially along the radial direction of the flow guiding structure 2, or the heating elements 3 may be arranged sequentially along the axial direction of the flow guiding structure 2. The following mainly takes the example of one heating element 3 to describe the specific position of the heating element 3 and the accommodating cavity 23.

[0085] In some embodiments, see Figure 6 The heating element 3 can be configured to contact the proximal accommodating cavity surface 233 and the distal accommodating cavity surface 234; or, in other examples, the distance between the proximal accommodating cavity surface 233 and the distal accommodating cavity surface 234 can be configured to be slightly greater than the length of the heating element 3 in the radial direction of the guide structure 2, so that the air entering from the second air inlet 211 can fully contact the heating element 3 and then be discharged from the air outlet 221.

[0086] Regarding the distance between the proximal receiving cavity surface 233 and the distal receiving cavity surface 234 being slightly larger than the length of the heating element 3 along the radial direction of the flow guiding structure 2, in some examples, the difference between the distance between the proximal receiving cavity surface 233 and the distal receiving cavity surface 234 and the length of the heating element 3 along the radial direction of the flow guiding structure 2 can be set to a range of 0~5mm. For example, the difference between the distance between the proximal receiving cavity surface 233 and the distal receiving cavity surface 234 and the length of the heating element 3 along the radial direction of the flow guiding structure 2 can be set to 0~1mm, 1~2mm, 2~3mm, 3~4mm, or 4~5mm, etc.

[0087] In some embodiments, see Figure 6 The distance between the upper accommodating cavity surface 231 and the lower accommodating cavity surface 232 is greater than the length of the heating element 3 along the axis of the flow guiding structure 2; or, in other embodiments, the heating element 3 may be arranged to contact the upper accommodating cavity surface 231 and the lower accommodating cavity surface 232.

[0088] In this embodiment, when the second air inlet 211 and air outlet 221 are arranged opposite each other on both sides of the heating element 3, by setting the distance between the upper accommodating cavity surface 231 and the lower accommodating cavity surface 232 to be greater than the length of the heating element 3 along the axial direction of the guide structure 2, the flow time of the airflow in the accommodating cavity 23 can be increased as much as possible; by setting the heating element 3 to contact the upper accommodating cavity surface 231 and the lower accommodating cavity surface 232, the volume of the guide structure 2 can be reduced.

[0089] In some embodiments, see Figure 6 and Figure 7 The flow guiding structure 2 includes a first flow guiding part 21 and a second flow guiding part 22. Please refer to [link / reference]. Figure 9 An annular groove 223 is formed on the second guide section 22, and the heating element 3 is located in the annular groove 223. Please refer to [link / reference]. Figure 10 One end of the first guide section 21 is shielded by a ring to form a receiving groove 223 so that the two form a receiving cavity 23.

[0090] Please see Figure 7 and Figure 8 The first guide section 21 is provided with a plurality of second air inlets 211, which are spaced apart along the circumference of the first guide section 21; the second guide section 22 is provided with a plurality of air outlets 221, which are spaced apart along the circumference of the second guide section 22.

[0091] In this embodiment of the application, by setting the flow guiding structure 2 to include a first flow guiding part 21 and a second flow guiding part 22, the number of components of the flow guiding structure 2 can be minimized while the flow guiding structure 2 can be assembled to form a receiving cavity 23.

[0092] In some embodiments, see Figure 9 and Figure 10 The circumferential outer surface of the second guide section 22 has a limiting plate 222, please refer to [link / reference]. Figure 6 The limiting plate 222 and the end of the first guide portion 21 facing away from the second guide portion 22 respectively cooperate with the two inner sides opposite to the outer shell 1 to limit the position of the guide structure 2 inside the outer shell 1 along the distribution direction of the first guide portion 21 and the second guide portion 22, so that the second guide portion 22 and the first guide portion 21 can be assembled on the outer shell 1 without the need for other connecting parts.

[0093] In some embodiments, see Figure 6 A first sealing element 4 is provided between the end of the first guide section 21 that is away from the second guide section 22 and the inner side of the outer casing 1.

[0094] In some examples, the first seal 4 is a high-temperature resistant silicone seal to improve the service life of the first seal 4.

[0095] In some examples, the first seal 4 can be configured as an annular sealing ring.

[0096] See some examples. Figure 6 The outer casing 1 includes an opening end 161, on which a first air inlet 11 is provided, and the inner side of the opening end 161 contacts the first sealing member 4. Specifically, the opening end 161 includes a middle region and an edge region, the edge region is located circumferentially to the middle region, the first air inlet 11 is provided on the edge region, and the first sealing member 4 is provided between the inner side of the middle region and one end of the first guide portion 21.

[0097] In this embodiment, a first sealing member 4 is provided between the end of the first guide portion 21 that is away from the second guide portion 22 and the inner side of the outer shell 1, so that the end of the first guide portion 21 that is away from the second guide portion 22 can be limited to the inner side of the outer shell 1 by squeezing the first sealing member 4.

[0098] In some embodiments, the limiting plate 222 is sealed to the inner side of the outer casing 1.

[0099] See some examples. Figure 4 An obstacle avoidance hole 12 is provided on the outer shell 1. The end of the second guide part 22 facing away from the first guide part 21 is inserted into the obstacle avoidance hole 12. A second sealing member 5 is provided between the second guide part 22 and the outer shell 1. The second sealing member 5 realizes the sealing fit between the limiting plate 222 and the inner side of the outer shell 1 and / or realizes the sealing fit between the obstacle avoidance hole 12 and the second guide part 22.

[0100] Regarding the second sealing element 5 achieving a sealing fit between the limiting plate 222 and the inner side of the outer shell 1 and / or a sealing fit between the clearance hole 12 and the second guide portion 22, it can be understood that the second sealing element 5 can be configured to achieve a sealing fit only between the limiting plate 222 and the inner side of the outer shell 1, or the second sealing element 5 can be configured to achieve a sealing fit only between the clearance hole 12 and the second guide portion 22, or the second sealing element 5 can be configured to achieve a sealing fit not only between the limiting plate 222 and the inner side of the outer shell 1, but also a sealing fit between the clearance hole 12 and the second guide portion 22.

[0101] Regarding the specific shape of the second seal 5, in some examples, the second seal 5 may include a first annular region, a second annular region, and a third annular region. The second annular region connects the first annular region and the third annular region. The third annular region is disposed between the clearance hole 12 and the second guide portion 22. The second annular region is disposed between the limiting plate 222 and the inner side of the outer shell 1. The first annular region is disposed around the circumferential outer side of the limiting plate 222.

[0102] In this embodiment, a sealing fit is provided between the limiting plate 222 and the inner side of the outer shell 1 to prevent gas inside the outer shell 1 from overflowing through the space between the limiting plate 222 and the outer shell 1.

[0103] In some embodiments, see Figure 10 The second guide section 22 includes a support bottom 225, an inner annular cylinder 226, and an outer annular cylinder 227. The inner annular cylinder 226 is fitted inside the outer annular cylinder 227. The support bottom 225 is located at one end of the inner annular cylinder 226 and the outer annular cylinder 227. Please refer to [link to relevant documentation]. Figure 9 An annular groove 223 is formed between the inner annular cylinder 226 and the outer annular cylinder 227, and an air outlet 221 is provided on the bottom 225 of the support.

[0104] See some examples. Figure 10 An extension 224 is provided on the side of the bottom 225 of the bracket away from the inner annular cylinder 226 and the outer annular cylinder 227, and a limit plate 222 is provided on the circumferential outer side of the bottom 225 of the bracket.

[0105] In some examples, the second guide section 22 is a one-piece molded structure.

[0106] In some embodiments, see Figure 8 and Figure 10 The first guide section 21 includes a support cylinder 212 and an edge baffle 213. The edge baffle 213 is disposed on the support cylinder 212 along the circumferential direction of the support cylinder 212. The edge baffle 213 is used to cover the annular placement groove 223. A second air inlet 211 is provided on the edge baffle 213.

[0107] In some examples, one end of the support cylinder 212 abuts against the end face of the inner annular cylinder 226; or, in other examples, see [link to relevant documentation]. Figure 10 One end of the support cylinder 212 is inserted into the inner annular cylinder 226 to facilitate the positioning and installation of both.

[0108] See some examples. Figure 10 The height of the inner annular cylinder 226 is greater than the height of the outer annular cylinder 227, and one end of the inner annular cylinder 226 is inserted into the support cylinder 212.

[0109] In some embodiments, one of the outer annular cylinder 227 and the edge baffle 213 is provided with a limiting protrusion 228, and the other is provided with a limiting groove 214. The limiting protrusion 228 is inserted into the limiting groove 214 to achieve the positioning and installation of the first guide section 21 and the second guide section 22. Please refer to Figure 9 The diagram illustrates that a limit protrusion 228 is provided on the end face of the outer annular cylinder 227. Please refer to [link / reference]. Figure 8 A limit groove 214 is provided on the edge baffle 213.

[0110] In some examples, at least one limiting protrusion 228 is provided on the outer annular cylinder 227. When there are two or more limiting protrusions 228, the limiting protrusions 228 are spaced apart along the circumferential direction of the outer annular cylinder 227. In addition, the number of upper limiting grooves 214 on the edge baffle 213 is the same as the number of limiting protrusions 228, and the two correspond one-to-one.

[0111] In some embodiments, see Figure 9 At least one second protrusion 229 is provided on the bottom surface of the annular groove 223, and the second protrusion 229 is used to support the heating element 3.

[0112] In some examples, there are more than two second protrusions 229, and each second protrusion 229 is spaced apart along the circumferential direction of the annular positioning groove 223.

[0113] In some embodiments, see Figure 8 At least one first protrusion 215 is provided on the side of the edge baffle 213 facing the annular placement groove 223. The first protrusion 215 is used to limit the amount of movement of the heating element 3 along the axial direction of the flow guiding structure 2.

[0114] In some examples, there are two or more first protrusions 215, and each first protrusion 215 is spaced apart along the circumferential direction of the edge baffle 213.

[0115] In some examples, the first bump 215 is in contact with the heating element 3 or there is a gap between them.

[0116] Please see Figures 12-13 , Figure 12 This is a cross-sectional schematic diagram of the outer casing 1 provided in some embodiments of this application. Figure 13 An exploded schematic diagram of the outer casing 1 provided for some embodiments of this application.

[0117] In some embodiments, see Figure 12 The outer shell 1 has a first cavity 13 and a second cavity 14. The second cavity 14 is arranged around the first cavity 13. The flow guiding structure 2 is located in the first cavity 13. The heating device 10 also includes a control board, which is arranged in the second cavity 14. The heating element 3 is electrically connected to the control board.

[0118] In some examples, the heating device 10 also includes a battery that is wired to the control board and is disposed within the second cavity 14.

[0119] In this embodiment, the second cavity 14 is arranged circumferentially along the first cavity 13 to prevent the position of the control board and battery from affecting the airflow channel on the guide structure 2.

[0120] In some embodiments, see Figure 12 The outer shell 1 forms a receiving space 15 for placing the cup 201. The receiving space 15 is connected to the air vent 221. The second cavity 14 is arranged around the circumference of the receiving space 15.

[0121] In this embodiment, the outer shell 1 forms a receiving space 15 so that the cup body 201 can be inserted into the receiving space 15, and the heating device 10 is stably supported on the cup body 201.

[0122] In some embodiments, see Figure 12 The outer shell 1 includes a first shell 16, a second shell 17 and a third shell 18. The first shell 16 is disposed at one end of the second shell 17, and a first cavity 13 is formed between the first shell 16 and the second shell 17. The third shell 18 is disposed inside the second shell 17 and the two together form a second cavity 14.

[0123] In some examples, the first housing 16 and the second housing 17 may be detachably connected by a connector, or the first housing 16 and the second housing 17 may be snap-fit ​​connected.

[0124] In some examples, the second housing 17 and the third housing 18 may be detachably connected by a connector, or the second housing 17 and the third housing 18 may be snap-fit ​​connected.

[0125] In this embodiment of the application, the outer casing 1 is provided to include a first casing 16, a second casing 17 and a third casing 18, so as to assemble the flow guiding structure 2, the control board and the battery, etc., inside the outer casing 1.

[0126] In some embodiments, see Figure 13The third housing 18 includes a third end section 182 and a third main body section 181. The third main body section 181 is cylindrical, and the third end section 182 is disposed on the outer peripheral side of the third main body section 181 and close to the bottom end of the third main body section 181. The second housing 17 includes a second main body section 171 and a second end section 172. The second end section 172 is disposed on the inner peripheral side of the second main body section 171 and close to the top end of the second main body section 171. An avoidance hole 12 is provided on the second end section 172. The second main body section 171 is sleeved on the outside of the third main body section 181, and the end of the second main body section 171 away from the first housing 16 is in contact with the third end section 182.

[0127] In some examples, the top end of the third main body segment 181 may be configured to seal against the second end segment 172; or, in other embodiments, please refer to [reference needed]. Figure 12 and Figure 13 The outer shell 1 also includes a mating cylinder 19, the bottom end of which contacts the top end of the third main body section 181, and the top end of the mating cylinder 19 is sealed to the second end section 172 through the third sealing member 6.

[0128] In some examples, the mating cylinder 19 and the third main body section 181 can be detachably connected, for example, by means of a connector.

[0129] In some embodiments, the heating device 10 further includes a temperature detection component for detecting the temperature of the accommodating space 15, and the temperature detection component is connected to the control board.

[0130] In some examples, when the temperature detection component detects that the temperature inside the containment space 15 is higher than the preset temperature, the control board controls to reduce the power of the heating element 3; or, when the temperature detection component detects that the temperature inside the containment space 15 is lower than the preset temperature, the control board controls to increase the power of the heating element 3.

[0131] 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. A heating device, characterized in that, For use in an inhalation device (20), the inhalation device (20) includes a cup (201) for holding an aerosol matrix (200), and the heating device (10) includes: The outer shell (1) has a first cavity (13) formed inside it, and a first air inlet (11) is provided on the outer shell (1). A flow guiding structure (2) is installed in the first cavity (13). A receiving cavity (23) is formed inside the flow guiding structure (2). A second air inlet (211) and an air outlet (221) are provided on the flow guiding structure (2) and communicate with the receiving cavity (23). Gas entering the first cavity (13) from the first air inlet (11) can flow into the receiving cavity (23) from the second air inlet (211). Heating element (3) is disposed in the accommodating cavity (23).

2. The heating device as described in claim 1, characterized in that, The second air inlet (211) and the air outlet (221) are located on opposite sides of the heating element (3), and the second air inlet (211) and the air outlet (221) are misaligned.

3. The heating device as described in claim 1, characterized in that, The heating element (3) is spiral in shape and is spirally coiled around the central axis of the heating element (3), wherein the central axis extends along the length direction of the heating element (3).

4. The heating device as described in claim 3, characterized in that, The accommodating cavity (23) is annular in shape, and the heating element (3) is arranged along the circumference of the accommodating cavity (23) in the length direction.

5. The heating device as described in claim 1, characterized in that, The outer shell (1) is provided with a clearance hole (12), one end of the flow guiding structure (2) is exposed to the outside through the clearance hole (12), and one end of the air outlet (221) is opened to the end face of the flow guiding structure (2) exposed outside the clearance hole (12).

6. The heating device according to any one of claims 1-5, characterized in that, The flow guiding structure (2) includes a first flow guiding part (21) and a second flow guiding part (22). An annular groove (223) is formed on the second flow guiding part (22). The heating element (3) is located in the annular groove (223). One end of the first flow guiding part (21) blocks the annular groove (223) so that the two form the receiving cavity (23). The first guide section (21) is provided with a plurality of second air inlets (211), which are spaced apart along the circumference of the first guide section (21); the second guide section (22) is provided with a plurality of air outlets (221), which are spaced apart along the circumference of the second guide section (22).

7. The heating device as described in claim 6, characterized in that, The second flow guide (22) has a limiting plate (222) on its circumferential side. The limiting plate (222) and the end of the first flow guide (21) away from the second flow guide (22) respectively cooperate with the two inner sides opposite to the outer shell (1) to limit the orientation of the flow guide structure (2) in the outer shell (1) along the distribution direction of the first flow guide (21) and the second flow guide (22).

8. The heating device as described in claim 7, characterized in that, The limiting plate (222) is sealed to the inner side of the outer shell (1); and / or, The end of the first guide portion (21) facing away from the second guide portion (22) is sealed to the inner side of the outer shell (1).

9. The heating device as described in any one of claims 1-5 or 7-8, characterized in that, The outer shell (1) also has a second cavity (14) formed inside it. The second cavity (14) is arranged around the first cavity (13). The heating device (10) also includes a control board, which is disposed in the second cavity (14) and is connected to the heating element (3).

10. The heating device as described in claim 9, characterized in that, The outer shell (1) forms a receiving space (15) for placing the cup (201), the receiving space (15) is connected to the air vent (221), and the second cavity (14) is arranged around the circumference of the receiving space (15).

11. An aerosol generator, characterized in that, It includes an inhalation device (20) and a heating device (10) according to any one of claims 1-10, the heating device (10) being supported on the cup body (201) of the inhalation device (20).

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