Aerosol generating device and aerosol generating system

Abstract

The embodiment of the invention provides an aerosol generating device and an aerosol generating system. The aerosol generating device comprises a shell assembly and a heating unit. The shell assembly is provided with an installation space. The heating unit is at least partially arranged in the installation space and defines at least part of a containing cavity used for containing the aerosol generating product. On the cross section perpendicular to the height direction of the aerosol generating device, the size of the cross section of the containing cavity in the first direction is larger than the size of the cross section in the second direction, and the first direction intersects with the second direction. According to the aerosol generating device provided by the embodiment of the invention, the miniaturization of the aerosol generating device is facilitated, and the user experience is improved. Besides, in the heating process of the flat containing cavity, the minimum distance between the heating unit and the center of the aerosol generating product is smaller, the heat transfer path is shortened, rapid, efficient and uniform heating is facilitated, the heating performance is improved, and therefore the atomization effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of atomization, and particularly to an aerosol generating device and an aerosol generating system. Background Art

[0002] This section aims to provide background or context for the embodiments described in the present application. The descriptions herein are not admitted to be prior art merely because they are included in this section.

[0003] An aerosol generating device is an electronic delivery system that controls its working state and aerosol output through a control circuit and a heating element for user use.

[0004] Existing aerosol media to be heated (such as cigarette media) and heating element assemblies are usually cylindrical. At the center of the cylindrical aerosol medium, the heat transfer path is long. At the same time, due to the extremely large thermal resistance of the aerosol medium, it is easy to cause insufficient heating of the part of the aerosol medium near the center, wasting the aerosol medium. If the heating duration is extended or the heating power is increased, the outer aerosol medium is prone to charring due to repeated heating or excessive temperature, reducing the user experience. At the same time, since the aerosol medium and the heating element assembly are cylindrical, the structure of the aerosol generating device is relatively large. If the diameter of the aerosol medium is reduced, in order to meet the requirement of sufficient puff numbers and release of sufficient active ingredients of the aerosol medium, the length of the aerosol medium needs to be increased, resulting in a longer length of the aerosol generating device and poor user experience. Summary of the Invention

[0005] In view of this, embodiments of the present application are expected to provide a miniaturized aerosol generating device and an aerosol generating system, which can improve the atomization effect.

[0006] To achieve the above object, one aspect of the embodiments of the present application provides an aerosol generating device, including:

[0007] A housing assembly provided with an installation space;

[0008] A heating unit, at least partially disposed in the installation space and defining at least part of a receiving cavity for receiving an aerosol generating article;

[0009] In a cross-section perpendicular to the height direction of the aerosol generating device, the size of the cross-section of the receiving cavity along a first direction is greater than the size along a second direction, wherein the first direction intersects the second direction.

[0010] In some embodiments, in a cross-section perpendicular to the height direction of the aerosol generating device, the ratio range of the size of the cross-section of the receiving cavity along the first direction to the size along the second direction is 1.2 - 11.

[0011] In some embodiments, in a cross-section perpendicular to the height direction of the aerosol generating device, the ratio of the size of the cross-section of the accommodation cavity in a first direction to the size in a second direction ranges from 1.8 to 2.3.

[0012] In some embodiments, the cross-sectional shape of the accommodation cavity is rectangular, oval, trapezoidal or racetrack-shaped.

[0013] In some embodiments, the heating unit includes a connecting member and a heating element fixed to the connecting member. The connecting member is connected to the housing assembly, and the heating element is located in the installation space and is used to heat and atomize an aerosol generating article to generate an aerosol.

[0014] In some embodiments, the heating element is tubular. In a cross-section perpendicular to the height direction of the aerosol generating device, the cross-sectional shape of the heating element is rectangular, oval, trapezoidal or racetrack-shaped.

[0015] In some embodiments, the housing assembly includes a housing body and an air outlet unit connected to the housing body. The housing body is provided with the installation space and an opening communicating with the installation space. The air outlet unit is disposed at the opening and defines the accommodation cavity with the heating unit. The air outlet unit further forms an air outlet channel communicating with the accommodation cavity.

[0016] In some embodiments, the heating unit is provided with a first accommodation groove, and the air outlet unit is provided with a second accommodation groove. The first accommodation groove and the second accommodation groove together form the accommodation cavity. One end of the aerosol generating article is inserted into the first accommodation groove, and the other end of the aerosol generating article is inserted into the second accommodation groove.

[0017] In some embodiments, the groove wall of the second accommodation groove is provided with convex ribs for making an interference fit between the air outlet unit and the aerosol generating article.

[0018] In some embodiments, the cross-sectional area of the air outlet channel is smaller than the cross-sectional area of the second accommodation groove, and along the flow direction of the air flow, the cross-sectional area of the air outlet channel gradually increases.

[0019] In some embodiments, the air outlet unit is provided with a supplementary air channel. One end of the supplementary air channel penetrates the outer side wall of the air outlet unit, and the other end communicates with one end of the second accommodation groove close to the air outlet channel and communicates with the air outlet channel.

[0020] In some embodiments, the second receiving groove includes a connected connection section and a contraction section. The connection section is used to receive the aerosol generating article, the contraction section is communicated with the air outlet channel, and along the flowing direction of the air flow, the cross-sectional area of the contraction section gradually decreases.

[0021] In some embodiments, the air outlet unit is provided with a supplementary air channel. One end of the supplementary air channel penetrates the outer side wall of the air outlet unit, and the other end is communicated with the contraction section.

[0022] In some embodiments, the aerosol generating device is provided with an air inlet channel. The housing assembly is provided with a first sub-airway that constitutes at least part of the air inlet channel. The accommodation cavity is communicated with the outside through the first sub-airway.

[0023] In some embodiments, the first sub-airway is formed on the housing body; and / or, the first sub-airway is formed on the air outlet unit; and / or, the first sub-airway is defined between the housing body and the air outlet unit.

[0024] In some embodiments, the heating unit is provided with a first receiving groove, and the first receiving groove at least constitutes part of the accommodation cavity;

[0025] The air inlet channel further includes a second sub-airway. A second sub-airway is defined between the groove wall of the first receiving groove and the aerosol generating article received in the first receiving groove, and the second sub-airway is communicated with the first sub-airway.

[0026] In some embodiments, the second sub-airway includes a first air inlet section and a second air inlet section that are communicated with each other. The first air inlet section is located on the periphery of the aerosol generating article received in the first receiving groove, and the second air inlet section is located at one end of the aerosol generating article received in the first receiving groove away from the air outlet unit.

[0027] In some embodiments, in a cross-section perpendicular to the height direction of the aerosol generating device, the cross-sectional shape of the air outlet unit is adapted to the cross-sectional shape of the opening.

[0028] In some embodiments, the air outlet unit is in snap-fit connection with the housing body.

[0029] In some embodiments, the air outlet unit is provided with a supplementary air channel. One end of the supplementary air channel penetrates the outer side wall of the air outlet unit, and the other end penetrates the side wall of the air outlet channel and / or the second receiving groove.

[0030] Another aspect of the embodiments of the present application provides an aerosol generating system, including an aerosol generating article and the aerosol generating device described above. The aerosol generating article is disposed in the accommodation cavity. In a cross-section perpendicular to the height direction of the aerosol generating device, the cross-sectional shape of the aerosol generating article is adapted to the cross-sectional shape of the accommodation cavity.

[0031] In some embodiments, the housing assembly includes a housing body and an air outlet unit connected to the housing body. The housing body is provided with the installation space and an opening communicating with the installation space. The air outlet unit is disposed at the opening and defines at least part of the accommodation cavity. The air outlet unit further forms an air outlet channel communicating with the accommodation cavity;

[0032] The aerosol generating article extends out of the housing body, or the aerosol generating article is located within the housing body, or the end face of the aerosol generating article near the air outlet unit is flush with the end face of the housing body.

[0033] The aerosol generating device provided by the embodiments of the present application includes a housing assembly and a heating unit. The heating unit is at least partially disposed in the installation space of the housing assembly and defines at least part of the accommodation cavity for accommodating the aerosol generating article. The heating unit heats and atomizes the aerosol generating article to generate aerosol. In a cross-section perpendicular to the height direction of the aerosol generating device, by setting the dimension of the cross-section of the accommodation cavity in the first direction to be greater than the dimension in the second direction, that is, the accommodation cavity is flat. On the premise of a certain cross-sectional area, compared with the accommodation cavity with a circular cross-section, the aerosol generating device of the embodiments of the present application reduces the dimension of the accommodation cavity in the second direction to a certain extent. Thus, it is beneficial to realize the miniaturization of the aerosol generating device and improve the user experience. In addition, during the heating process of the flat accommodation cavity, the minimum distance between the heating unit and the center of the aerosol generating article is smaller, shortening the heat transfer path, which is beneficial for rapid, efficient, and uniform heating, improving the heating performance, and thus improving the atomization effect. Description of the Drawings

[0034] Figure 1 is a schematic structural diagram of an aerosol generating device in an embodiment of the present application;

[0035] Figure 2 is Figure 1 a cross-sectional view of the first perspective;

[0036] Figure 3 is Figure 2 an enlarged view of part A in

[0037] Figure 4 is Figure 3 a cross-sectional view of with the aerosol generating article omitted;

[0038] Figure 5 is Figure 1 a cross-sectional view of the second perspective;

[0039] Figure 6 is a cross-sectional view of the air outlet unit in an embodiment of the present application;

[0040] Figure 7 is a partial structural schematic diagram of an aerosol generating device in an embodiment of the present application;

[0041] Figure 8 is a partial structural schematic diagram of an aerosol generating device in another embodiment of the present application.

[0042] Description of reference numerals

[0043] 10. Housing assembly; 11. Housing body; 11a. Installation space; 11b. Opening; 111. Outer shell; 112. Installation bracket; 12. Air outlet unit; 12a. Second receiving groove; 12b. Rib; 12c. Air outlet channel; 12d. Air supplement channel; 12e. Connection section; 12n. Contraction section; 20. Heating unit; 20a. First receiving groove; 21. Connector; 22. Heating element; 30. Power supply assembly; 100. Aerosol generating device; 100a. Accommodation cavity; 100b. First sub-airway; 100c. Second sub-airway; 100d. First intake section; 100e. Second intake section; 200. Aerosol generating article; 200a. Air flow channel. Detailed description of the specific implementation

[0044] It should be noted that, without conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other. The detailed description in the specific implementation should be understood as an explanatory description of the purpose of the present application and should not be regarded as an improper limitation of the present application.

[0045] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "first direction", "second direction", etc. is based on the orientation or positional relationship shown in the attached Figure 2 drawing and the attached Figure 5 drawing. These orientation terms are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the embodiments of the present application. The present application will be further described in detail below with reference to the drawings and specific embodiments.

[0046] One aspect of the embodiments of the present application provides an aerosol generating system. Please refer to Figures 1 to 8, including an aerosol - generating article 200 and the aerosol - generating device 100 of any of the above embodiments. The aerosol - generating article 200 is disposed within the receiving cavity 100a of the aerosol - generating device 100. In a cross - section perpendicular to the height direction of the aerosol - generating device 100, the cross - sectional shape of the aerosol - generating article 200 is adapted to the cross - sectional shape of the receiving cavity 100a.

[0047] The aerosol - generating article 200 is disposed within the receiving cavity 100a, and the heating unit 20 is configured to heat the aerosol - generating article 200 to generate an aerosol.

[0048] It should be noted that, in the embodiments of the present application, please refer to Figure 2 and Figure 3 , the aerosol - generating article 200 is in a solid form.

[0049] The structure of the aerosol - generating article 200 is not limited. Exemplarily, in some embodiments, the aerosol - generating article 200 may include a functional section and an aerosol - generating matrix. The functional section is disposed at one end of the aerosol - generating matrix along the length direction. It should be noted that the aerosol - generating article 200 generates an aerosol relying on the aerosol - generating matrix, and the functional section does not generate an aerosol.

[0050] The functional section may include a cooling section for cooling the aerosol to reduce the temperature of the aerosol and improve the "scalding mouth" phenomenon when the user inhales the aerosol. The functional section may also include a support section. The support section has a certain structural strength and provides an axial limiting effect on the aerosol - generating matrix. The functional section may also include a filtering section for filtering the aerosol.

[0051] In other embodiments, the aerosol - generating article 200 does not include a functional section.

[0052] The aerosol - generating article 200 may further include an outer wrapping layer that wraps around the outer peripheral sides of the functional section and the aerosol - generating matrix. Of course, the aerosol - generating article 200 may also not have an outer wrapping layer. Specifically, in the embodiments of the present application, the aerosol - generating article 200 without an outer wrapping layer is taken as an example for illustration.

[0053] The material of the aerosol - generating matrix is not limited. Exemplarily, the aerosol - generating article 200 includes, but is not limited to, drugs, nicotine - containing materials, nicotine - free materials, etc. In one embodiment, the aerosol - generating matrix may include tobacco materials. In one example, the aerosol - generating matrix is provided with a macroscopic internal air flow channel 200a. The aerosol - generating matrix can be made by extrusion, die - casting, etc., and the internal air flow channel 200a can be directly formed by extrusion, die - casting, etc. Of course, the aerosol - generating matrix may also have microscopic ventilation holes, which are not limited herein.

[0054] The aerosol generating article 200 includes, but is not limited to, materials for medical, health preservation, health, beauty and other purposes.

[0055] Another aspect of the embodiments of the present application provides an aerosol generating device 100. Please refer to Figures 1 to 7 , which includes a housing assembly 10 and a heating unit 20. The housing assembly 10 is provided with an installation space 11a. At least part of the heating unit 20 is disposed in the installation space 11a and defines at least part of a receiving cavity 100a for receiving the aerosol generating article 200. In a cross-section perpendicular to the height direction of the aerosol generating device 100, the dimension of the cross-section of the receiving cavity 100a along a first direction is greater than the dimension along a second direction, wherein the first direction intersects the second direction.

[0056] At least part of the heating unit 20 being disposed in the installation space 11a means that the heating unit 20 may be partially disposed in the installation space 11a or may be entirely disposed in the installation space 11a.

[0057] The heating unit 20 defining at least part of the receiving cavity 100a for receiving the aerosol generating article 200 means that the heating unit 20 may define a part of the receiving cavity 100a or may define the entire receiving cavity 100a.

[0058] The heating unit 20 defines at least part of the receiving cavity 100a for receiving the aerosol generating article 200, and the heating unit 20 heats the aerosol generating article 200 to generate aerosol. That is to say, the aerosol generating article 200 of the embodiments of the present application is heated in a circumferential manner, that is, the heating unit 20 circumferentially heats the aerosol generating article 200.

[0059] In a cross-section perpendicular to the height direction of the aerosol generating device 100, the cross-sectional shape of the aerosol generating article 200 is adapted to the cross-sectional shape of the receiving cavity 100a, which is beneficial to the assembly of the aerosol generating article 200, the miniaturization of the aerosol generating device 100 and the improvement of the heating efficiency.

[0060] Please refer to Figure 5 、 Figure 7 and Figure 8 , in a cross-section perpendicular to the height direction of the aerosol generating device 100, the dimension of the cross-section of the receiving cavity 100a along the first direction is greater than the dimension along the second direction, that is, the receiving cavity 100a is a flat cavity, and the corresponding aerosol generating article 200 is also flat.

[0061] The first direction is, for example, the length direction of the aerosol generating device 100, and the second direction is, for example, the width direction of the aerosol generating device 100.

[0062] The shape of the accommodation cavity 100a with a flat cross-sectional shape has various types. Exemplarily, the cross-sectional shape of the accommodation cavity 100a is rectangular, oval, trapezoidal or racetrack-shaped.

[0063] Among them, the racetrack shape refers to a shape similar to an athletics track, which is formed by alternately connecting two semi-circles or arcs with the same radius and two parallel straight edges.

[0064] When the cross-sectional shape of the accommodation cavity 100a is rectangular, the accommodation cavity 100a can be smoothly connected by an arc at the top corner, or can be not smoothly connected by an arc.

[0065] When the cross-sectional shape of the accommodation cavity 100a is trapezoidal, the accommodation cavity 100a can be smoothly connected by an arc at the top corner, or can be not smoothly connected by an arc.

[0066] The shape of the aerosol-generating article 200 with a flat cross-sectional shape has various types. Exemplarily, the cross-sectional shape of the aerosol-generating article 200 is rectangular, oval, trapezoidal or racetrack-shaped.

[0067] When the cross-sectional shape of the aerosol-generating article 200 is rectangular, the aerosol-generating article 200 can be smoothly connected by an arc at the top corner, or can be not smoothly connected by an arc.

[0068] In a specific embodiment, by setting the cross-sectional shapes of both the aerosol-generating article 200 and the accommodation cavity 100a to be rectangular or racetrack-shaped, the structure of the heating unit 20 is optimized to realize the thinning and lightening of the whole aerosol-generating device 100, so that the thickness (the dimension of the aerosol-generating device 100 along the second direction) is 8 mm - 12 mm, such as 8 mm, 9 mm, 10 mm, 11 mm or 12 mm, etc.

[0069] Exemplarily, please refer to Figure 2 and Figure 8 , the aerosol-generating device 100 further includes a power supply device, and the power supply device is electrically connected to the heating unit 20.

[0070] Among them, the power supply device is mainly used for supplying power to the heating unit 20 and controlling operations such as turning on or off the whole aerosol-generating device 100.

[0071] It should be noted that the specific type of the aerosol-generating device 100 provided in the embodiments of the present application is not limited. Exemplarily, the aerosol-generating device 100 can be a medical atomization device, an air humidifier, or an atomization device such as an electronic cigarette.

[0072] The housing assembly 10 can be understood as the main body part of the aerosol-generating device 100, and the housing assembly 10 constitutes the general framework of the aerosol-generating device 100.

[0073] At least a part of the housing assembly 10 can serve as the exterior part of the aerosol generating device 100, and the installation space 11a can facilitate the arrangement of the heating unit 20.

[0074] The aerosol generating device 100 provided by the embodiment of the present application includes a housing assembly 10 and a heating unit 20. The heating unit 20 is at least partially disposed in the installation space 11a of the housing assembly 10, and defines a receiving cavity 100a for receiving an aerosol generating article 200 with the housing assembly 10. The heating unit 20 heats and atomizes the aerosol generating article 200 to generate an aerosol. In a cross-section perpendicular to the height direction of the aerosol generating device 100, by setting the dimension of the cross-section of the receiving cavity 100a in the first direction to be greater than the dimension in the second direction, that is, the receiving cavity 100a is flat, on the premise of a certain cross-sectional area, compared with the receiving cavity 100a with a circular cross-section, the aerosol generating device 100 of the embodiment of the present application reduces the dimension of the receiving cavity 100a in the second direction to a certain extent. Thus, it is beneficial to realize the miniaturization of the aerosol generating device 100 and improve the user experience. In addition, during the heating process of the flat receiving cavity 100a, the minimum distance between the heating unit 20 and the center of the aerosol generating article 200 is smaller, shortening the heat transfer path, which is beneficial to perform rapid, efficient and uniform heating, improving the heating performance, and thus improving the atomization effect.

[0075] In some embodiments, in a cross-section perpendicular to the height direction of the aerosol generating device 100, the ratio range of the dimension of the cross-section of the receiving cavity 100a in the first direction to the dimension in the second direction is 1.2 - 11. For example, it is 1.2, 1.3, 1.5, 1.8, 2.0, 2.3, 2.4, 2.5, 2.7, 2.8, 2.9, 3.0, 3.5, 4.0, 4.8, 5.0, 5.3, 6.0, 6.4, 7.0, 7.5, 8.0, 8.7, 9.0, 9.8, 10.0, 10.6 or 11.0, etc.

[0076] By setting the ratio range of the dimension of the cross-section of the receiving cavity 100a in the first direction to the dimension in the second direction to be 1.2 - 11, while being beneficial to realizing the miniaturization of the aerosol generating device 100, it also shortens the heat transfer path, which is beneficial to perform rapid, efficient and uniform heating, improving the heating performance, and thus improving the atomization effect.

[0077] In some embodiments, in a cross-section perpendicular to the height direction of the aerosol generating device 100, the ratio range of the dimension of the cross-section of the receiving cavity 100a in the first direction to the dimension in the second direction is 1.8 - 2.3. For example, it is 1.8, 1.9, 2.0, 2.1, 2.2 or 2.3, etc.

[0078] By setting the ratio of the cross-sectional dimension of the accommodating cavity 100a along the first direction to the cross-sectional dimension along the second direction to be in the range of 1.8-2.3, it is further beneficial to realize the miniaturization of the aerosol generating device 100 and further improve the heating performance, thereby improving the atomization effect.

[0079] In some embodiments, see Figures 3 to 7 The heating unit 20 includes a connecting member 21 and a heating member 22 fixed to the connecting member 21. The connecting member 21 is connected to the housing assembly 10. The heating member 22 is located in the installation space 11a and is used to heat the atomized aerosol generating product 200 to generate aerosol.

[0080] The type of the heating element 22 is not limited. For example, see Figures 3 to 8 The heating element 22 is tubular, and the cross-section of the heating element 22 is rectangular, elliptical, trapezoidal or racetrack-shaped in a cross section perpendicular to the height direction of the aerosol generating device 100. The inner space of the heating tube constitutes a part of the accommodating cavity 100a.

[0081] The material of the heating tube is not limited. For example, it can be stainless steel or quartz tube. The heating tube is used to heat the aerosol generating product 200 and generate aerosol. In other words, the aerosol generating product 200 of the embodiment of the present application is heated in a circumferential manner.

[0082] The heating technology of the heating tube is not limited, for example, it can be electromagnetic induction heating or resistance film heating.

[0083] The heating unit 20 is fixed by directly connecting the connector 21 to the shell assembly 10. In the related art, the heating unit 20 is fixed by setting the connector 21 to be clamped at both ends of the heating element 22, and by sleeved on the periphery of the heating element 22 a fixing bracket is used to fix the connector 21 located at both ends of the heating element 22, while the aerosol generating device 100 of the embodiment of the present application can choose not to set a fixing bracket to fix the connector 21, but directly connect the connector 21 to the shell assembly 10 to fix the heating unit 20, which is conducive to miniaturization of the aerosol generating device 100, reduces parts, reduces costs, improves assembly efficiency, and enhances user experience. In addition, since no additional fixing bracket is set to fix the heating unit 20, it is conducive to reducing the heat generated by the heating unit 20 and transferring it to the fixing bracket, so that the heat can be kept in the heating unit 20 as much as possible, reducing energy consumption during heating and improving heating performance.

[0084] In some embodiments, see Figures 2 to 4, the housing assembly 10 includes a housing body 11 and an air outlet unit 12 connected to the housing body 11. The housing body 11 is provided with an installation space 11a and an opening 11b communicating with the installation space 11a. The air outlet unit 12 is disposed at the opening 11b and defines an accommodation cavity 100a with the heating unit 20. The air outlet unit 12 further forms an air outlet channel 12c communicating with the accommodation cavity 100a.

[0085] The specific manner in which the air outlet unit 12 is connected to the housing body 11 is not limited herein. Exemplarily, the air outlet unit 12 and the housing body 11 may be connected by, for example, magnetic attraction connection, snap connection, fastening connection, or plug connection.

[0086] Among them, the fastening connection includes, but is not limited to, screw connection, bolt connection, or rivet connection, etc.

[0087] Exemplarily, the air outlet unit 12 and the housing body 11 are in snap-fit, which is beneficial to realizing the disassembly and assembly between the air outlet unit 12 and the housing body 11.

[0088] For a specific embodiment, please refer to Figures 2 to 4 , a snap flange is formed on the circumferential side wall of the air outlet unit 12, and a snap groove is formed at the opening 11b of the housing body 11. The snap flange and the snap groove are snap-fitted to enable the snap-fit between the air outlet unit 12 and the housing body 11. In another specific embodiment, the connection between the air outlet unit 12 and the housing body 11 is made of a soft material (such as rubber, silica gel, etc.). When the air outlet unit 12 is connected to the housing body 11, the air outlet unit 12 undergoes elastic deformation and cooperates with the housing body 11. For example, it is inserted into the housing body 11 through the opening 11b. When disassembly and assembly are required, the air outlet unit 12 can be directly pulled out. Of course, the air outlet unit 12 can also be entirely made of a soft material, which is not limited herein.

[0089] In this embodiment, by setting the housing assembly 10 to include the housing body 11 and the air outlet unit 12, and the air outlet unit 12 is provided with the air outlet channel 12c, the aerosol generated by heating and atomizing the aerosol generating article 200 by the heating element 22 can enter the air outlet channel 12c from the accommodation cavity 100a and thus be sucked by the user. That is, the aerosol can be filtered, cooled, etc. by the air outlet unit 12, so that the aerosol generating article 200 does not need to be provided with a functional section and an outer wrapping layer. That is to say, the aerosol generating article 200 in this embodiment can only include an aerosol generating matrix, saving the components such as cooling and filtering in the aerosol generating article 200, simplifying the manufacturing process and packaging volume of the aerosol generating article 200, reducing the cost, and the functional section, etc. will not be discarded with each puff, which is beneficial to environmental protection.

[0090] In addition, according to the product style characteristics, filtering and flavor enhancing substances can be placed inside the air outlet unit 12, which is beneficial to improving the taste of the aerosol.

[0091] In some embodiments, in a cross-section perpendicular to the height direction of the aerosol generating device 100, the cross-sectional shape of the air outlet unit 12 is adapted to the cross-sectional shape of the opening 11b. Thus, it is beneficial to the connection between the air outlet unit 12 and the housing body 11.

[0092] There are various forms in which the air outlet unit 12 and the heating unit 20 define the accommodation cavity 100a.

[0093] Exemplarily, in some embodiments, please refer to Figures 2 to 4 , the heating unit 20 is provided with a first accommodation groove 20a, and the air outlet unit 12 is provided with a second accommodation groove 12a. The first accommodation groove 20a and the second accommodation groove 12a together form the accommodation cavity 100a. One end of the aerosol generating article 200 is inserted into the first accommodation groove 20a, and the other end of the aerosol generating article 200 is inserted into the second accommodation groove 12a.

[0094] That is to say, one end of the aerosol generating article 200 is inserted into the heating unit 20, and the other end is inserted into the air outlet unit 12. That is, the heating unit 20 and the air outlet unit 12 clamp the aerosol generating article 200 therebetween to achieve the fixation of the aerosol generating article 200.

[0095] The aerosol generated by the heating unit 20 heating the aerosol generating article 200 can flow into the air outlet channel 12c in the air outlet unit 12 through the air flow channel 200a provided inside the aerosol generating article 200, which facilitates the installation and fixation of the aerosol generating article 200, and can be filtered and cooled by the air outlet unit 12. While being beneficial to the rapid outflow of the aerosol, it can also enable the aerosol generating article 200 not to be provided with functional segments and outer wrapping layers, etc.

[0096] In some other embodiments, it may also be that the heating unit 20 is provided with a first accommodation groove 20a, and the air outlet unit 12 is not provided with a second accommodation groove 12a, but covers the upper part of the first accommodation groove 20a to jointly form the accommodation cavity 100a with the first accommodation groove 20a.

[0097] In some embodiments, please refer to Figure 4 and Figure 6, the groove wall of the second receiving groove 12a is provided with a rib 12b for making the air outlet unit 12 and the aerosol generating article 200 in an interference fit. That is to say, by providing the rib 12b on the groove wall of the second receiving groove 12a, an interference fit is made between the air outlet unit 12 and the aerosol generating article 200. In this way, it is beneficial to make the aerosol generating article 200 located at the center of the receiving cavity 100a and is beneficial to further fix the aerosol generating article 200. In addition, it is also possible to minimize the entry of external air into the air outlet channel 12c through the gap between the air outlet unit 12 and the aerosol generating article 200.

[0098] The number of ribs 12b can be one or multiple.

[0099] It should be noted that the rib 12b can extend along the axial direction of the second receiving groove 12a (i.e., the height direction of the aerosol generating device 100) or can extend along the circumferential direction of the second receiving groove 12a.

[0100] The air outlet unit 12 is, for example, a mouthpiece. The material of the air outlet unit 12 is not limited herein. Exemplarily, the air outlet unit 12 is made of a soft rubber material, for example. In this way, it is beneficial for the aerosol generating article 200 to be inserted into the air outlet unit 12.

[0101] In some embodiments, please refer to Figure 6 , the cross-sectional area of the air outlet channel 12c for fluid flow is smaller than the cross-sectional area of the second receiving groove 12a. And along the flow direction of the air flow, the cross-sectional area of the air outlet channel 12c for fluid flow gradually increases.

[0102] It should be noted that the cross-sectional area for fluid flow refers to the cross-section orthogonal to all streamlines of the elementary flow or the total flow, that is, the plane perpendicular to the velocity cluster such as the air flow or the liquid flow. When the streamline clusters are not parallel to each other, the cross-sectional area for fluid flow is a curved surface; when the streamline clusters are parallel straight lines to each other, the cross-sectional area for fluid flow is a plane.

[0103] It can be understood that along the flow direction of the air flow, the cross-sectional area of the air outlet channel 12c for fluid flow gradually increases. In this way, the flow velocity of the air flow in the air outlet channel 12c gradually decreases and the air pressure gradually increases. The air pressure shows a continuous change trend, and the turbulence degree of the air flow can be reduced.

[0104] Of course, the air outlet channel 12c also includes an equal-diameter region. It should be noted that along the flow direction of the air flow, the cross-sectional areas of the cross-sections of the air outlet channel 12c located in the equal-diameter region are equal.

[0105] The cross-sectional area of the air outlet channel 12c for fluid flow is smaller than the cross-sectional area of the second receiving groove 12a. In this way, the flow velocity of the air flow flowing from the second receiving groove 12a into the air outlet channel 12c gradually increases and the air pressure gradually decreases. The air pressure shows a continuous change trend, and the turbulence degree of the air flow can be reduced.

[0106] The cross-sectional area of the second receiving groove 12a is relatively large, which is conducive to the aerosol generated by the aerosol generating article 200 converging at one end of the second receiving groove 12a close to the air outlet passage 12c through the air flow passage 200a provided inside the aerosol generating article 200. And the cross-sectional area of the air outlet passage 12c is set to be smaller than that of the second receiving groove 12a. That is, by reducing the cross-sectional area of the air outlet passage 12c, it is beneficial to increase the flow rate of the aerosol, thereby enhancing the user experience.

[0107] In some embodiments, refer to Figures 3 to 6 , the second receiving groove 12a includes a connecting section 12e and a contracting section 12n. The connecting section 12e is used to accommodate the aerosol generating article 200. The contracting section 12n is communicated with the air outlet passage 12c, and along the flowing direction of the air flow, the cross-sectional area of the contracting section 12n gradually decreases.

[0108] The aerosol generated by the aerosol generating article 200 converges in the contracting section 12n through the air flow passage 200a provided inside the aerosol generating article 200.

[0109] The cross-sectional area of the air outlet passage 12c is set to be smaller than that of the second receiving groove 12a. That is, a design similar to a Venturi tube is adopted. When the restricted flow passes through the reduced cross-sectional area, the fluid shows a phenomenon of increasing flow rate, and its flow rate is inversely proportional to the cross-sectional area. When the air flow carrying the aerosol flows through the contracting section 12n and the air outlet passage 12c of this structure, the flow rate is increased, thereby improving the heat exchange efficiency between the aerosol and the inner wall of the air outlet unit 12 and reducing the temperature of the aerosol.

[0110] In some embodiments, refer to Figure 4 and Figure 6 , the air outlet unit 12 is provided with a supplementary air passage 12d. One end of the supplementary air passage 12d penetrates the outer wall of the air outlet unit 12, and the other end is communicated with one end of the second receiving groove 12a close to the air outlet passage 12c and is communicated with the air outlet passage 12c and / or the second receiving groove 12a.

[0111] The aerosol generated by the aerosol generating article 200 converges in the air flow passage 200a provided inside the aerosol generating article 200. During the suction process, negative pressure is generated in the air outlet passage 12c and the second receiving groove 12a. The aerosol in the air flow passage 200a flows into the second receiving groove 12a and the air outlet passage 12c in sequence under the action of the negative pressure. At the same time, under the action of the negative pressure, the outside cold air flows into the air outlet passage 12c and / or the second receiving groove 12a through the supplementary air passage 12d to neutralize the taste with the aerosol and can cool the aerosol, which is beneficial to enhancing the taste of the aerosol.

[0112] In some embodiments, the air outlet unit 12 is provided with a supplementary air channel 12d. One end of the supplementary air channel 12d penetrates the outer side wall of the air outlet unit 12, and the other end penetrates the side wall of the air outlet channel 12c and / or the second accommodation groove 12a. Specifically, please refer to Figure 4 and Figure 6 , one end of the supplementary air channel 12d penetrates the outer side wall of the air outlet unit 12, and the other end communicates with the contraction section 12n. That is to say, one end of the supplementary air channel 12d penetrates the outer side wall of the air outlet unit 12, and the other end penetrates the inner side wall of the contraction section 12n.

[0113] Since the cross-sectional area of the flow-through section of the contraction section 12n gradually decreases, when the restricted flow passes through the reduced cross-sectional area of the flow-through section, the fluid velocity increases. Therefore, the cold air from the outside flows into the contraction section 12n, which is conducive to the full mixing of the cold air and the aerosol, further improving the cooling effect and enhancing the taste of the aerosol.

[0114] In some embodiments, please refer to Figure 3 and Figure 4 , the aerosol generating device 100 is provided with an air inlet channel. The housing assembly 10 is provided with a first sub-airway 100b that constitutes at least part of the air inlet channel. The accommodation cavity 100a communicates with the outside through the first sub-airway 100b.

[0115] The housing assembly 10 is provided with a first sub-airway 100b that constitutes at least part of the air inlet channel, that is, the housing assembly 10 is provided with a first sub-airway 100b, and the first sub-airway 100b constitutes at least part of the air inlet channel.

[0116] The accommodation cavity 100a communicates with the outside through the first sub-airway 100b. When the user sucks, the outside air flows into the accommodation cavity 100a through the first sub-airway 100b and carries the aerosol generated in the accommodation cavity 100a into the user's mouth for the user to inhale.

[0117] It should be noted that there are various forms in which the housing assembly 10 is provided with the first sub-airway 100b. Exemplarily, in some embodiments, the housing body 11 forms the first sub-airway 100b. In other embodiments, the air outlet unit 12 forms the first sub-airway 100b. In still other embodiments, please refer to Figure 3 , the first sub-airway 100b is defined between the housing body 11 and the air outlet unit 12. For example, the air outlet unit 12 is provided with a first air inlet groove, and the first sub-airway 100b is defined between the groove wall of the first air inlet groove and the housing body 11.

[0118] In some embodiments, please refer to Figures 3 to 4, the heating unit 20 is provided with a first receiving groove 20a, and the first receiving groove 20a at least constitutes a part of the receiving cavity 100a. The intake passage further includes a second sub-airway 100c. A second sub-airway 100c is defined between the groove wall of the first receiving groove 20a and the aerosol-generating article 200 received in the first receiving groove 20a, and the second sub-airway 100c communicates with the first sub-airway 100b.

[0119] The groove wall of the first receiving groove 20a can be understood as the wall of the first receiving groove 20a in any direction.

[0120] The second sub-airway 100c can be understood as the gap formed between the aerosol-generating article 200 disposed in the first receiving groove 20a and the groove wall of the first receiving groove 20a.

[0121] It can be understood that when the user inhales the aerosol, the external air flow enters the second sub-airway 100c through the first sub-airway 100b, and then enters the interior of the aerosol-generating article 200 to carry away the aerosol.

[0122] In some embodiments, please refer to Figures 3 to 4 , the second sub-airway 100c includes a first intake section 100d and a second intake section 100e that communicate with each other. The first intake section 100d is located on the peripheral side of the aerosol-generating article 200 received in the first receiving groove 20a. The second intake section 100e is located at one end of the aerosol-generating article 200 received in the first receiving groove 20a away from the outlet unit 12.

[0123] In this embodiment, when the user inhales the aerosol, the external air flow can enter the second intake section 100e through the first sub-airway 100b and the first intake section 100d. The air flow entering the second intake section 100e enters the internal air flow passage 200a of the aerosol-generating article 200 from the end face of the aerosol-generating article 200 at the end away from the outlet unit 12, and then flows toward the side close to the outlet unit 12. In this way, the air flow path inside the aerosol-generating article 200 is larger, so that as much aerosol inside the aerosol-generating article 200 can be extracted as possible.

[0124] In some embodiments, please refer to Figure 7, the connecting member 21 includes at least two connecting brackets. The two connecting brackets are disposed at both ends of the heating element 22 in the height direction and are respectively connected to the housing body 11. That is to say, by providing two connecting brackets, the two connecting brackets are respectively disposed at both ends of the heating element 22 in the height direction, so as to fix the heating element 22, and the two connecting brackets are respectively connected to the housing body 11 to fix the heating unit 20. This connection structure is simple and reliable, and there is no need to provide additional components for fixing the connecting brackets, which is beneficial to miniaturize the aerosol generating device 100, saves components, reduces costs, and improves the user experience.

[0125] The two connecting brackets and the heating element 22 jointly define a first receiving groove 20a, and a first air inlet section 100d is defined between the inner side walls of the two connecting brackets and the heating element 22 and the outer side wall of the heating element 22; the connecting bracket located at the bottom of the heating element 22 is provided with a first guiding groove extending in the radial direction of the heating element 22, and a second air inlet section 100e is defined between the groove wall of the first guiding groove and the bottom end of the aerosol generating article 200 received in the first receiving groove 20a.

[0126] The extension length of the first guiding groove is not limited, as long as the air flow reaching the side of the first air inlet section 100d away from the air outlet unit 12 can flow into the end face of the aerosol generating article 200.

[0127] In some embodiments, please refer to Figures 2 to 3 , the housing body 11 includes a housing 111 and a mounting bracket 112. The mounting bracket 112 is disposed inside the housing 111 and jointly defines a mounting space 11a and an opening 11b communicating with the mounting space 11a with the housing 111.

[0128] At least a part of the housing 111 can be used as the appearance part of the aerosol generating device 100, and the housing 111 can facilitate the setting of the mounting bracket 112 and the heating unit 20.

[0129] In some embodiments, the aerosol generating article 200 extends out of the housing body 11. By setting the aerosol generating article 200 to extend out of the housing body 11, it is convenient to fixedly install with the air outlet unit 12, and the temperature that the air outlet unit 12 needs to bear can be reduced, thereby improving the service life of the air outlet unit 12.

[0130] In other embodiments, the aerosol generating article 200 is located inside the housing body 11. Since the aerosol generating article 200 is located inside the housing body 11, the aerosol generating article 200 can be located as much as possible inside the heating unit 20, so that the aerosol generating article 200 can be fully heated and the utilization rate of the aerosol generating article 200 can be improved.

[0131] In some other embodiments, the end face of the aerosol-generating article 200 near one end of the air outlet unit 12 is flush with the end face of the housing body 11. Since the end face of the aerosol-generating article 200 near one end of the air outlet unit 12 is flush with the end face of the housing body 11, the aerosol-generating article 200 can be located as much as possible within the heating unit 20, so that the aerosol-generating article 200 can be fully heated, and the utilization rate of the aerosol-generating article 200 can be improved.

[0132] In the description of the present application, the description with reference to terms such as "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", or "exemplary", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic expression of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine the different embodiments or examples described in the present application and the features of different embodiments or examples.

[0133] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. An aerosol generating device, characterized in that, Comprising: A housing assembly provided with an installation space; A heating unit, at least partially disposed within the installation space and defining at least a part of a receiving cavity for receiving an aerosol-generating article; In a cross-section perpendicular to the height direction of the aerosol-generating device, the size of the cross-section of the receiving cavity in a first direction is greater than the size in a second direction, wherein the first direction intersects the second direction.

2. The aerosol generating device according to claim 1, wherein In a cross-section perpendicular to the height direction of the aerosol-generating device, the ratio range of the size of the cross-section of the receiving cavity in the first direction to the size in the second direction is 1.2 - 11.

3. The aerosol generating device according to claim 1, wherein, In a cross-section perpendicular to the height direction of the aerosol-generating device, the ratio range of the size of the cross-section of the receiving cavity in the first direction to the size in the second direction is 1.8 - 2.

3.

4. The aerosol generating device according to claim 1, wherein, The cross-sectional shape of the receiving cavity is rectangular, oval, trapezoidal or racetrack-shaped.

5. The aerosol generating device according to claim 1, wherein The heating unit includes a connecting member and a heating element fixed to the connecting member. The connecting member is connected to the housing assembly, and the heating element is located within the installation space and is used to heat and atomize the aerosol-generating article to generate aerosol.

6. The aerosol generating device according to claim 5, wherein, The heating element is tubular. In a cross-section perpendicular to the height direction of the aerosol-generating device, the cross-sectional shape of the heating element is rectangular, oval, trapezoidal or racetrack-shaped.

7. The aerosol generating device according to any one of claims 1-6, characterized in that, The housing assembly includes a housing body and an air outlet unit connected to the housing body. The housing body is provided with the installation space and an opening communicating with the installation space. The air outlet unit is disposed at the opening and, together with the heating unit, defines the receiving cavity. The air outlet unit further forms an air outlet channel communicating with the receiving cavity.

8. The aerosol generating device according to claim 7, wherein The heating unit is provided with a first receiving groove, and the air outlet unit is provided with a second receiving groove. The first receiving groove and the second receiving groove together constitute the receiving cavity. One end of the aerosol-generating article is inserted into the first receiving groove, and the other end of the aerosol-generating article is inserted into the second receiving groove.

9. The aerosol generating device according to claim 8, wherein, The groove wall of the second receiving groove is provided with convex ribs for making the air outlet unit and the aerosol-generating article in interference fit.

10. The aerosol generating device according to claim 8, wherein, The cross-sectional area of the air outlet channel is smaller than the cross-sectional area of the second receiving groove, and along the flow direction of the air flow, the cross-sectional area of the air outlet channel gradually increases.

11. The aerosol generating device according to claim 8, characterized in that, The second receiving groove includes a connected connecting section and a contracting section. The connecting section is used to receive the aerosol-generating article, and the contracting section communicates with the air outlet channel. Along the flow direction of the air flow, the cross-sectional area of the contracting section gradually decreases.

12. The aerosol generating device according to claim 11, wherein The air outlet unit is provided with a supplementary air channel. One end of the supplementary air channel penetrates the outer side wall of the air outlet unit, and the other end communicates with the contracting section.

13. The aerosol generating device according to claim 7, characterized in that, The aerosol-generating device is provided with an air inlet channel. The housing assembly is provided with a first sub-air channel constituting at least a part of the air inlet channel. The receiving cavity communicates with the outside through the first sub-air channel.

14. The aerosol generating device according to claim 13, wherein The housing body forms the first sub-air channel; and / or, the air outlet unit forms the first sub-air channel; and / or, the first sub-air channel is defined between the housing body and the air outlet unit.

15. The aerosol generating device according to claim 13, wherein, The heating unit is provided with a first accommodation groove, and the first accommodation groove at least constitutes part of the accommodation cavity; The air inlet channel further includes a second sub-airway. A second sub-airway is defined between the groove wall of the first accommodation groove and the aerosol-generating article accommodated in the first accommodation groove, and the second sub-airway communicates with the first sub-airway.

16. The aerosol generating device according to claim 15, characterized in that, The second sub-airway includes a first air inlet section and a second air inlet section that communicate with each other. The first air inlet section is located on the circumferential side of the aerosol-generating article accommodated in the first accommodation groove, and the second air inlet section is located at one end of the aerosol-generating article accommodated in the first accommodation groove away from the air outlet unit.

17. The aerosol generating device according to claim 7, wherein, In a cross-section perpendicular to the height direction of the aerosol-generating device, the cross-sectional shape of the air outlet unit is adapted to the cross-sectional shape of the opening; and / or, the air outlet unit is snap-fitted with the housing body.

18. The aerosol generating device according to claim 8, wherein, The air outlet unit is provided with a supplementary air channel. One end of the supplementary air channel penetrates the outer side wall of the air outlet unit, and the other end penetrates the side wall of the air outlet channel and / or the second accommodation groove.

19. An aerosol generating system, characterized in that, It includes an aerosol-generating article and the aerosol-generating device according to any one of claims 1-18. The aerosol-generating article is arranged in the accommodation cavity. In a cross-section perpendicular to the height direction of the aerosol-generating device, the cross-sectional shape of the aerosol-generating article is adapted to the cross-sectional shape of the accommodation cavity.

20. According to the aerosol-generating system of claim 19, the housing assembly includes a housing body and an air outlet unit connected to the housing body. The housing body is provided with the installation space and an opening communicating with the installation space. The air outlet unit is arranged at the opening and defines at least part of the accommodation cavity. The air outlet unit further forms an air outlet channel communicating with the accommodation cavity; The aerosol-generating article extends out of the housing body, or the aerosol-generating article is located inside the housing body, or the end face of the aerosol-generating article close to the air outlet unit is flush with the end face of the housing body.

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