Aerosol generation device

Abstract

The application provides an aerosol generating device, which comprises a shell, an atomizer and a first air channel. The top of the shell is provided with a first through hole. The atomizer is arranged in the interior of the shell and comprises a heating tube and a heat insulation tube. The interior of the heating tube forms a heating cavity, and the heat insulation tube is sleeved on the outside of the heating tube. The first air channel is formed in the gap between the inner wall of the heat insulation tube and the outer wall of the heating tube. The air inlet end and the air outlet end of the first air channel are respectively communicated with the first through hole and the heating cavity. Since the first air channel is formed between the heating tube and the heat insulation tube, air can be used for heat insulation, and heat conduction to the shell is reduced. When a user sucks the aerosol, cold air outside will enter the shell through the first through hole, then flow through the first air channel into the heating cavity, so that the heat in the first air channel is transferred to the heating cavity to heat the aerosol product. At the same time, the first air channel is also ventilated and cooled, heat conduction to the shell is reduced, and the temperature of the surface of the shell is thus reduced.

Description

Technical Field

[0001] This application belongs to the field of electronic atomization equipment technology, and particularly relates to an aerosol generating device. Background Technology

[0002] A heated non-combustible aerosol generator is a device that atomizes aerosols by heating an aerosol-generating matrix (such as treated plant leaf products) without causing the matrix to burn. This type of aerosol generator heats the matrix to a temperature sufficient to produce aerosols but not hot enough to burn, thus generating the desired aerosol for the user.

[0003] Existing heated non-combustible aerosol generators generate heat from their heating elements, causing the surrounding air to heat up and resulting in a high surface temperature that can be hot to the touch. Utility Model Content

[0004] This application provides an aerosol generating device to solve the problem of excessively high surface temperature in existing aerosol generating devices, which can cause burns.

[0005] The aerosol generating device provided in this application includes a housing, an atomizer, and a first air passage. The top of the housing is provided with a first through hole. The atomizer is disposed inside the housing and includes a heating tube and a heat insulation tube. The heating tube forms a heating cavity inside and the heat insulation tube is sleeved on the outside of the heating tube. The first air passage is formed in the gap between the inner wall of the heat insulation tube and the outer wall of the heating tube. The air inlet and air outlet of the first air passage are respectively connected to the first through hole and the heating cavity.

[0006] In some embodiments, the atomizer further includes an annular mounting base, the inner side of which is connected to the heating tube, and the outer side of which is connected to the heat insulation tube; the outer side of the mounting base is provided with a first air groove, which communicates with the spaces at both axial ends of the mounting base.

[0007] In some embodiments, the atomizer includes two mounting bases, the upper end of the heating tube is connected to the upper end of the heat insulation tube via one of the mounting bases, and the lower end of the heating tube is connected to the lower end of the heat insulation tube via the other mounting base.

[0008] In some embodiments, the inner side of the fixing seat abuts against the heating tube, and the outer side of the fixing seat abuts against the heat insulation tube; a second air groove is provided on one end surface of the fixing seat along the axial direction, the second air groove is connected to the first air groove, and the second air grooves of the two fixing seats are arranged opposite to each other.

[0009] In some embodiments, the inner side of the fixing seat is provided with a groove; and / or, the inner side of the heat insulation tube is provided with a positioning groove, and the outer side of the fixing seat is provided with a first positioning protrusion, the first positioning protrusion being inserted into the positioning groove.

[0010] In some embodiments, the heating tube is made of a magnetically conductive material, and the atomizer further includes a magnetic field generator and a magnetic shielding tube. The magnetic shielding tube is sleeved on the outside of the heat insulation tube, and the magnetic field generator is disposed between the magnetic shielding tube and the heat insulation tube, and can generate a magnetic field to cause the heating tube to heat up.

[0011] In some embodiments, the atomizer includes a plurality of magnetic shielding tubes, which are sequentially sleeved on the outside of the heat insulation tube from the inside to the outside, and heat insulation cotton is provided between two adjacent magnetic shielding tubes.

[0012] In some embodiments, the atomizer further includes a temperature sensing element and a heat shrink tubing, the heat shrink tubing being sleeved on the outside of the heating tube, the temperature sensing element being sandwiched between the heating tube and the heat shrink tubing, and the temperature sensing element being thermally connected to the heating tube.

[0013] In some embodiments, the aerosol generating device further includes a fixing tube and a support, the support being disposed inside the housing, the atomizer being disposed on the support, one end of the fixing tube being supported on the bottom of the atomizer, and the other end of the fixing tube being fixed on the support.

[0014] In some embodiments, the aerosol generating device further includes a decorative cover and a mounting base. The decorative cover is disposed over the first through hole and is mounted on the bracket via the mounting base. The decorative cover has a second through hole communicating with the first through hole, and the mounting base has a mounting through hole that is opposite to and communicates with the second through hole. The mounting through hole communicates with the air inlet end of the first air passage.

[0015] The aerosol generating device provided in this application embodiment involves inserting an aerosol product into the heating chamber of a heating tube during use. Heating the aerosol product generates aerosol for the user to inhale. Since a first air passage is formed between the heating tube and the insulation tube, air can be used for insulation, reducing heat conduction to the housing. Because the inlet and outlet of the first air passage are connected to the first through-hole and the heating chamber respectively, when the user inhales the aerosol, external cold air enters the housing through the first through-hole and then flows through the first air passage into the heating chamber. This transfers heat from the first air passage to the heating chamber, heating the aerosol product. Simultaneously, it ventilates and cools the first air passage, reducing heat conduction to the housing, thereby lowering the surface temperature of the housing. This achieves cooling, improved heat utilization, and rapid heating, ensuring that the aerosol generating device does not become scalding hot during use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this application. Those skilled in the art can obtain other drawings based on these drawings without creative effort. In the following description, the same reference numerals denote the same parts.

[0017] Figure 1 This is a front view of the aerosol generating apparatus provided in an embodiment of this application.

[0018] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the aerosol generating device along the AA direction.

[0019] Figure 3 for Figure 2 The diagram shows the cold air flow path of the aerosol generating device.

[0020] Figure 4 for Figure 3 The diagram shows an enlarged view of part A of the aerosol generating device.

[0021] Figure 5 for Figure 1 Left view of the aerosol generating device shown.

[0022] Figure 6 for Figure 5 The diagram shows a cross-sectional view of the aerosol generating device along the BB direction.

[0023] Figure 7 for Figure 6 The diagram shows the cold air flow path of the aerosol generating device.

[0024] Figure 8 for Figure 7 The diagram shows an enlarged view of part B of the aerosol generating device.

[0025] Figure 9 for Figure 1 A top view of the aerosol generating device shown.

[0026] Figure 10 for Figure 1 The diagram shown is a schematic of the aerosol generating device without the casing.

[0027] Figure 11 for Figure 10 A schematic diagram of the aerosol generating device from another perspective.

[0028] Figure 12for Figure 1 The diagram shows the exploded structure of the aerosol generating device.

[0029] Figure 13 This is an exploded structural diagram of the shell provided in an embodiment of this application.

[0030] Figure 14 This is a partial structural schematic diagram of the atomizer provided in an embodiment of this application.

[0031] Figure 15 for Figure 14 The diagram shows the exploded structure of the atomizer.

[0032] Figure 16 for Figure 14 The diagram shows another view of the atomizer's structure.

[0033] Figure 17 for Figure 16 The diagram shows a cross-sectional view of the atomizer along its longitudinal direction.

[0034] Figure 18 This is a schematic diagram of the heating tube, the mounting base, and the temperature measuring element provided in the embodiments of this application.

[0035] Figure 19 for Figure 18 A schematic diagram of the heating tube, mounting base, and temperature sensing element from another perspective.

[0036] Figure 20 This is a schematic diagram of the structure of the heat insulation pipe provided in the embodiment of this application.

[0037] Figure 21 This is a schematic diagram of the first structure of the fixing seat provided in the embodiment of this application.

[0038] Figure 22 This is a schematic diagram of a second structure of the fixing seat provided in an embodiment of this application.

[0039] Figure 23 This is a schematic diagram of the structure of the magnetic shielding tube and heat insulation cotton provided in the embodiments of this application.

[0040] Figure 24 This is a schematic diagram of the structure of the fixed tube provided in an embodiment of this application.

[0041] Figure 25 This is a schematic diagram of the structure of the bracket provided in an embodiment of this application.

[0042] Figure 26 This is a schematic diagram of the structure of the decorative cover provided in an embodiment of this application.

[0043] Figure 27 This is a schematic diagram of the mounting base provided in an embodiment of this application.

[0044] Figure 28 This is a schematic diagram of the structure of the rotating cover and connecting assembly provided in the embodiments of this application.

[0045] Explanation of icon numbers:

[0046] 1. Aerosol product; 100. Shell; 101. First through hole; 102. Third through hole; 110. First shell; 120. Second shell; 201. Heating chamber; 202. First air passage; 210. Heating tube; 220. Heat insulation tube; 221. Positioning groove; 230. Fixing seat; 230a. First fixing seat; 230b. Second fixing seat; 231. First air groove; 232. Second air groove; 233. Groove; 234. First positioning protrusion; 235. Limiting protrusion; 240. Magnetic field generator; 250. Filter screen; 260. Magnetic shielding tube; 260a. Inner magnetic shielding tube; 260b. Outer magnetic shielding tube; 2 70. Insulation cotton; 280. Temperature sensing element; 290. Heat shrink tubing; 300. Fixing tube; 310. Support part; 320. Fitting part; 330. Second positioning protrusion; 400. Bracket; 401. Bracket through hole; 402. Shaft hole; 510. Decorative cover; 511. Second through hole; 520. Mounting base; 521. Mounting through hole; 522. Third air groove; 610. Rotating cover; 620. Rotating shaft; 630. Torsion spring; 710. Main control circuit board; 720. Power supply; 730. Keypad; 740. Switch button; 750. Decorative part; 760. Light guide; 770. Vibrator; 780. Heat sink. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0048] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The term "and / or" includes any and all combinations of one or more of the associated listed items. The following description is provided to enable any person skilled in the art to make and use this application. In the following description, details are set forth for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0050] This application provides an aerosol generating device, such as... Figures 1 to 28 As shown, the aerosol generating device includes a housing 100, an atomizer, and a first air passage 202. A first through-hole 101 is provided at the top of the housing 100. The atomizer is disposed inside the housing 100 and is used to heat the aerosol product 1. The atomizer includes a heating tube 210 and a heat insulation tube 220 (e.g., ...). Figures 2-8 , Figures 14-19 As shown, a heating chamber 201 is formed inside the heating tube 210, and a heat insulation tube 220 is sleeved on the outside of the heating tube 210. A first air passage 202 is formed in the gap between the inner wall of the heat insulation tube 220 and the outer wall of the heating tube 210. The air inlet end of the first air passage 202 is connected to the first through hole 101, and the air outlet end of the first air passage 202 is connected to the heating chamber 201. The function of the heating tube 210 is to generate heat to heat the aerosol product 1; the function of the heat insulation tube 220 is to insulate heat to reduce the heat loss of the heating tube 210.

[0051] When using the aerosol generating device provided in this embodiment, the aerosol product 1 (e.g., a cigarette cartridge) is inserted into the heating chamber 201 of the atomizer. The aerosol product 1 is heated to generate an aerosol for the user to inhale. The aerosol generating device provided in this embodiment forms a first air passage 202 between the heating tube 210 and the heat insulation tube 220, thus utilizing air for heat insulation and reducing heat conduction to the housing 100. Since the inlet and outlet ends of the first air passage 202 are respectively connected to the first through hole 101 and the heating chamber 201, therefore… When the user draws in the aerosol, external cold air enters the housing 100 through the first through hole 101, then flows through the first air passage 202 into the heating chamber 201, transferring heat from the first air passage 202 to the heating chamber 201 to heat the aerosol product 1. At the same time, the first air passage 202 is ventilated and cooled, reducing heat conduction to the housing 100 and thus lowering the surface temperature of the housing 100. This achieves the effects of cooling, improving heat utilization, and rapid heating, ensuring that the aerosol generating device does not become too hot to handle during use.

[0052] Specifically, the heating tube 210 has heating through holes for inserting the aerosol product 1 into the heating chamber 201 and an air inlet connected to the air outlet of the first air passage 202 at both ends. The air inlet of the heating tube 210 is covered with a filter screen 250, which is used to filter dust in the air to prevent dust in the air from clogging the aerosol product 1 and causing high suction resistance, thereby improving the user's suction experience.

[0053] In some embodiments of this application, the heating tube 210 is made of a magnetic material, i.e., the heating tube 210 is made of a magnetic material (such as iron, permalloy, etc.). The atomizer also includes a magnetic field generator 240, which is disposed outside the heat insulation tube 220 and is used to generate a high-frequency alternating magnetic field to heat the heating tube 210 to heat the aerosol product 1, so that the aerosol product 1 generates an aerosol for the user to inhale. The magnetic field generator 240 can be an electromagnetic induction coil, which is sleeved on the outside of the heat insulation tube 220. This structure is more compact and facilitates the miniaturization of the aerosol generating device.

[0054] Furthermore, such as Figures 6-12 As shown, the atomizer also includes a magnetic shielding tube 260, which is sleeved on the outside of the heat insulation tube 220. A magnetic field generator 240 is positioned between the magnetic shielding tube 260 and the heat insulation tube 220. The magnetic shielding tube 260 reduces the leakage of the magnetic field generated by the magnetic field generator 240, allowing the magnetic field generated by the generator 240 to concentrate on heating the heating tube 210 to better heat the aerosol product 1, thereby improving heating efficiency.

[0055] Optionally, one or more magnetic shielding tubes 260 can be provided. When multiple magnetic shielding tubes 260 are provided, they can be sequentially sleeved on the outside of the heat insulation tube 220 from the inside out. Furthermore, heat insulation cotton 270 can be provided between adjacent magnetic shielding tubes 260. The function of the heat insulation cotton 270 is to insulate and reduce heat loss from the heating tube 210. For example, as shown... Figure 2 , Figure 6 , Figure 12 and Figure 23 As shown, the atomizer includes two magnetic shielding tubes 260. For ease of description, the two magnetic shielding tubes 260 are defined as inner magnetic shielding tube 260a and outer magnetic shielding tube 260b, respectively. The inner magnetic shielding tube 260a is sleeved on the outside of the heat insulation tube 220, and the outer magnetic shielding tube 260b is sleeved on the outside of the inner magnetic shielding tube 260a. Heat insulation cotton 270 is provided between the two magnetic shielding tubes 260.

[0056] Optionally, the heat insulation tube 220 can be made of porous low-temperature ceramic or heat-insulating composite aerogel to improve its heat insulation effect. However, since the air gap between the heating tube 210 and the heat insulation tube 220 also has a good heat insulation effect, the heat insulation tube 220 can also be made of other common materials, such as plastic or rubber, which can also achieve a good heat insulation effect. It should be noted that when the atomizer includes a magnetic field generator 240, the overall structure of the heat insulation tube 220 should have a large resistance in the direction in which the magnetic field generated by the magnetic field generator 240 is generated, so as to prevent the magnetic field generated by the magnetic field generator 240 from heating the heat insulation tube 220. For this purpose, the heat insulation tube 220 can be set as an insulator, or adopt a silicon steel sheet structure with the overlapping direction in the same direction as the magnetic field direction in most areas.

[0057] In some embodiments of this application, such as Figure 2 , Figure 6 , Figure 12 , Figures 14-22 As shown, the atomizer also includes an annular mounting base 230. The inner side of the mounting base 230 is connected to the heating tube 210, and the outer side of the mounting base 230 is connected to the heat insulation tube 220. The outer side of the mounting base 230 is provided with a first air groove 231, which connects the spaces at both ends of the axial direction of the mounting base 230. The mounting base 230 ensures that the heating tube 210 and the heat insulation tube 220 are spaced apart, making the positional relationship between the heating tube 210 and the heat insulation tube 220 more stable and preventing them from being too close together in some places, which would lead to increased heat conduction. The first air groove 231 allows the gas in the first air passage 202 to flow, so that when the user inhales the aerosol product 1, external cold air can enter the first air passage 202 for cooling.

[0058] Optionally, the inner side of the mounting base 230 can be connected to the heating tube 210 by means of interference fit, abutment, bonding, welding, screw connection, etc., and the outer side of the mounting base 230 can be connected to the heat insulation tube 220 by means of interference fit, abutment, bonding, welding, screw connection, etc. The specific connection can be set according to actual needs.

[0059] Optionally, the number of mounting brackets 230 can be one or more, which can be set according to actual needs. For example, such as... Figure 2 , Figure 6 , Figure 12 , Figures 14-19 As shown, the atomizer includes two mounting bases 230. The upper end of the heating tube 210 is connected to the upper end of the heat insulation tube 220 through one of the mounting bases 230, and the lower end of the heating tube 210 is connected to the lower end of the heat insulation tube 220 through the other mounting base 230. For ease of understanding, the two mounting bases 230 are defined as the first mounting base 230a and the second mounting base 230b, respectively. The inner side of the first mounting base 230a is connected to the upper end of the heating tube 210, and the outer side of the first mounting base 230a is connected to the upper end of the heat insulation tube 220. The inner side of the second mounting base 230b is connected to the lower end of the heating tube 210, and the outer side of the second mounting base 230b is connected to the lower end of the heat insulation tube 220. By setting two fixing seats 230 to connect the two ends of the heating tube 210 and the heat insulation tube 220 simultaneously, the stability of the positional relationship between the heating tube 210 and the heat insulation tube 220 can be further improved, ensuring the existence of the gap and the uniformity of the thickness of the gap in the radial direction of the heating tube 210, thereby ensuring the stability of the heat insulation effect.

[0060] Specifically, such as Figure 21 and Figure 22 As shown, the inner surfaces of the first fixing seat 230a and the second fixing seat 230b are provided with limiting protrusions 235. The first fixing seat 230a and the second fixing seat 230b are sleeved on the outside of the heating tube 210, and the two end faces of the heating tube 210 respectively abut against the limiting protrusions 235 of the first fixing seat 230a and the second fixing seat 230b, thereby realizing the connection between the first fixing seat 230a and the second fixing seat 230b and the heating tube 210. No additional connecting parts are required, which makes the assembly process simple and convenient, and improves the assembly efficiency of the fixing seat 230 and the heating tube 210.

[0061] Optional, such as Figure 21 and Figure 22As shown, the inner side of the fixing seat 230 abuts against the heating tube 210, and the outer side of the fixing seat 230 abuts against the heat insulation tube 220. A second air groove 232 is provided on one axial end surface of the fixing seat 230, communicating with the first air groove 231. The second air grooves 232 of the two fixing seats 230 are arranged opposite to each other. In other words, one end surface of both the first fixing seat 230a and the second fixing seat 230b is provided with a second air groove 232 communicating with the first air groove 231, and the second air grooves 232 of the first fixing seat 230a and the second fixing seat 230b are arranged opposite to each other. The arrangement of the second air groove 232 ensures that when the heating tube 210 and the heat insulation tube 220 abut against the inner and outer sides of the fixing seat 230 respectively, air can flow through the fixing seat 230 into the gap between the heating tube 210 and the heat insulation tube 220 (i.e., the first air passage 202) and into the heating chamber 201.

[0062] Optional, such as Figure 21 and Figure 22 As shown, the inner side of the mounting base 230 is provided with a groove 233. The groove 233 can reduce the contact area between the mounting base 230 and the heating tube 210, reduce the heat transfer from the heating tube 210 to the mounting base 230, that is, reduce the heat transferred from the heating tube 210 to the mounting base 230, and improve the heat insulation effect.

[0063] Preferably, the mounting base 230 is made of a low thermal conductivity material (such as porous low-temperature ceramic, thermal insulation composite aerogel, etc.). This ensures that the entire mounting base 230 is not heated, making its temperature much lower than that of the heating tube 210. This concentrates the heat on the circumferential heating tube and the heating tube 210, reducing heat conduction and loss, thus increasing heating efficiency. At the same time, the mounting base 230 made of a low thermal conductivity material also reduces heat conduction to the housing 100 of the aerosol generating device, thereby reducing the surface temperature of the housing 100 and preventing overheating of the housing 100 of the aerosol generating device.

[0064] Optional, such as Figure 20 As shown, the inner surface of the heat insulation pipe 220 is provided with a positioning groove 221, such as... Figure 21 and Figure 22 As shown, the outer surface of the fixing base 230 is provided with a first positioning protrusion 234, which is inserted into the positioning groove 221. The positioning groove 221 and the first positioning protrusion 234 facilitate quick positioning during the assembly of the heat insulation tube 220 and the fixing base 230, thereby improving assembly efficiency. Specifically, the end of the heat insulation tube 220 is provided with an opening communicating with the positioning groove 221. During assembly, the fixing base 230 is moved along the axial direction of the heat insulation tube 220 so that the first positioning protrusion 234 is inserted into the positioning groove 221 through the opening.

[0065] It is understandable that when the atomizer includes two fixing seats 230, namely the first fixing seat 230a and the second fixing seat 230b, the inner surfaces of both ends (i.e. the upper and lower ends) of the heat insulation tube 220 are provided with positioning grooves 221. The first positioning protrusion 234 on the first fixing seat 230a is inserted into the positioning groove 221 at the upper end of the heat insulation tube 220, and the first positioning protrusion 234 on the second fixing seat 230b is inserted into the positioning groove 221 at the lower end of the heat insulation tube 220.

[0066] In some embodiments of this application, such as Figure 6 , Figure 12 , Figures 14-19 As shown, the atomizer also includes a temperature sensing element 280, which is thermally connected to the heating tube 210. The temperature sensing element 280 can monitor the surface temperature of the heating tube 210 to control its heating temperature and prevent overheating. Specifically, the temperature sensing element 280 is connected to the main control circuit board 710 of the aerosol generating device via wires. A heat shrink tubing 290 is fitted over the outside of the heating tube 210, and the temperature sensing element 280 is sandwiched between the heating tube 210 and the heat shrink tubing 290. The function of the heat shrink tubing 290 is to press and fix the temperature sensing element 280 to the outer surface of the heating tube 210 to prevent it from falling off.

[0067] In some embodiments of this application, such as Figure 2 , Figure 6 , Figures 10-12 and Figure 24 As shown, the aerosol generating device also includes a fixing tube 300, which is supported at the bottom of the atomizer to fix the atomizer inside the housing 100. The lower end of the fixing tube 300 (i.e., the air inlet end of the fixing tube 300) is connected to the air outlet end of the second air passage 203, and the upper end of the fixing tube 300 (i.e., the air outlet end of the fixing tube 300) is connected to the heating chamber 201. Specifically, a portion of the cold air entering from the first through hole 101 of the housing 100 flows sequentially through the interior of the second air passage 203 and the fixing tube 300, and finally enters the heating chamber 201. The fixing tube 300 provides a longer flow path for the portion of cold air entering the second air passage 203, thereby transferring more heat from inside the housing 100 to the heating chamber 201, thus better reducing the surface temperature of the housing 100.

[0068] Optional, such as Figure 24 As shown, the upper end of the fixed tube 300 is provided with a support portion 310 and a mating portion 320 in sequence along the direction away from the lower end. The mating portion 320 has a mating through hole communicating with the fixed tube 300. The heat insulation tube 220 is sleeved on the mating portion 320. The lower ends of the heat insulation tube 220 and the lower ends of the magnetic shielding tube 260 abut against the support portion 310. The second fixing seat 230b abuts against the mating portion 320. Figure 24As shown, the outer side of the mating part 320 is provided with a second positioning protrusion 330, which is also inserted into the positioning groove 221 provided on the inner side of the heat insulation tube 220, thereby facilitating the quick positioning of the heat insulation tube 220 and the fixed tube 300 during assembly and improving assembly efficiency.

[0069] like Figure 2 , Figure 6 , Figures 10-12 and Figure 25 As shown, the aerosol generating device also includes a support 400, which is disposed inside the housing 100. The atomizer and the fixing tube 300 are both disposed on the support 400, and the second air passage 203 is formed between the support 400 and the housing 100. The support 400 is used to support and install the various components, and the various components are reasonably arranged on the support 400 to make the whole structure compact.

[0070] In some embodiments of this application, such as Figure 6 , Figure 7 , Figures 10-12 and Figure 28 The aerosol generating device also includes a rotating cover 610, and the bottom of the housing 100 is provided with a third through hole 102 (e.g., Figure 13 As shown), the bottom of the bracket 400 is provided with a bracket through hole 401 opposite to the third through hole 102 (as shown). Figure 25 As shown, the bracket through hole 401 is connected to the lower end of the fixing tube 300. The rotating cover 610 is rotatably installed on the bracket through hole 401 to open and close the bracket through hole 401. By setting the rotating cover 610, it can serve a decorative purpose and facilitate the cleaning of soot stains inside the heating tube 210. That is, the user can open the rotating cover 610 and insert cleaning tools into the heating tube 210 after passing through the third through hole 102, the bracket through hole 401 and the fixing tube 300 in sequence.

[0071] Specifically, the rotating cover 610 is mounted to the through hole 401 of the bracket via a connecting assembly, such as... Figure 12 and Figure 28 As shown, the connecting assembly includes two torsion springs 630 and a rotating shaft 620. The inner wall of the bracket through hole 401 is provided with two opposing shaft holes 402 (e.g., Figure 25 As shown, the two ends of the rotating shaft 620 are respectively inserted into the two shaft holes 402; two torsion springs 630 are respectively sleeved on the two ends of the rotating shaft 620, and the rotating feet at both ends of the torsion springs 630 respectively abut against the inner side wall of the bracket through hole 401, thereby realizing that the rotating cover 610 can be rotatably covered on the bracket through hole 401.

[0072] Optional, such as Figures 1 to 7 , Figure 12 and Figure 13As shown, the housing 100 includes a first housing 110 and a second housing 120. The first housing 110 and the second housing 120 are detachably connected and together form a receiving cavity. A bracket 400 is disposed in the receiving cavity and an atomizer is disposed on the bracket 400. A first through hole 101 and a third through hole 102 are respectively disposed on the first housing 110 and the second housing 120.

[0073] In some embodiments of this application, such as Figures 1-12 , Figure 26 and Figure 27 As shown, the aerosol generating device also includes a decorative cover 510 and a mounting base 520. The decorative cover 510 is disposed over the first through hole 101 and is mounted on the bracket 400 via the mounting base 520; the decorative cover 510 has a second through hole 511 communicating with the first through hole 101 (e.g., ...). Figure 26 As shown), the mounting base 520 is provided with a mounting through hole 521 that is opposite to and communicates with the second through hole 511 (as shown). Figure 27 As shown, the mounting through hole 521 is connected to the air inlet end of the first air passage 202. Specifically, when the user inhales the aerosol, external cold air will enter the housing 100 through the second through hole 511, and then flow through the mounting through hole 521 and the first air passage 202 in sequence before entering the heating chamber 201.

[0074] Specifically, the mounting through hole 521 of the mounting base 520 is positioned opposite to the heating through hole of the heating tube 210. The aerosol product 1 can be inserted into the heating chamber 201 after passing through the second through hole 511, the mounting through hole 521, and the heating through hole in sequence. Figure 2 and Figure 6 As shown.

[0075] The following uses aerosol product 1 as an example of a cigarette cartridge. Figure 3 and Figure 7 The cold air flow path of the aerosol generating device shown is explained below:

[0076] The aerosol generating device heats the cartridge inserted in the heating chamber 201 to generate aerosol for the user to inhale. When the user inhales the aerosol, cold air from outside enters the housing 100 through the second through hole 511, and then flows sequentially through the mounting through hole 521 of the mounting base 520, the second air groove 232 of the first fixing base 230a, the first air groove 231 of the first fixing base 230a, the first air passage 202, the first air groove 231 of the second fixing base 230b, the second air groove 232 of the second fixing base 230b, and the middle of the second fixing base 230b into the cartridge. This transfers the heat in the first air passage 202 to the cartridge to heat it. At the same time, this cold air can also cool the first fixing base 230a, the second fixing base 230b, and the first air passage 202, reducing the heat conduction to the housing 100. This lowers the surface temperature of the housing 100, preventing the aerosol generating device from becoming too hot to handle during use.

[0077] like Figure 1 , Figure 6 , Figures 10-12 As shown, the aerosol generating device also includes a main control circuit board 710, a power supply 720 (e.g., a battery), a keypad 730, and a switch button 740. The main control circuit board 710, the power supply 720, and the keypad 730 are all mounted on the bracket 400. The magnetic field generator 240, the power supply 720, and the keypad 730 are all electrically connected to the main control circuit board 710. The main control circuit board 710 is used to control the entire aerosol generating device, and the power supply 720 is used to supply power to the aerosol generating device. The switch button 740 is mounted on the keypad 730, and part of the switch button 740 extends to the outside of the housing 100. The switch button 740 is the switch for the aerosol generating device. Users can start or stop the aerosol generating device by pressing the switch button 740. A decorative piece 750 is also provided on the side of the housing 100 opposite to the switch button 740 to improve the appearance of the housing 100.

[0078] Optionally, the aerosol generating device also includes a light source and a light guide 760. The light source is electrically connected to the main control circuit board 710, and the light guide 760 is used to direct the light emitted by the light source to the switch button 740, so that the light passes through the switch button 740, thereby indicating the working status of the aerosol generating device to the user. Optionally, the aerosol generating device also includes a vibrating oscillator 770, which is disposed at the bottom of the bracket 400. When the oscillator 770 vibrates, it indicates the working status of the aerosol generating device.

[0079] In some embodiments of this application, such as Figures 10-12As shown, the aerosol generating device also includes a heat sink 780, which is attached to the outer surface of the bracket 400 for heat dissipation. Optionally, the heat sink 780 can be made of aluminum or other heat-dissipating materials. The number of heat sinks 780 can be one or more, depending on actual needs. Using multiple heat sinks 780 can further improve heat dissipation efficiency. For example, two heat sinks 780 can be used, with each heat sink 780 attached to one of the opposite outer surfaces of the bracket 400.

[0080] Specifically, in combination Figure 6 and Figures 10-12 As shown, the power supply 720 and the atomizer are respectively located on the left and right sides of the bracket 400, the fixing tube 300 is located below the atomizer, the main control circuit board 710 is located between the power supply 720 and the atomizer, and the two heat sinks 780 are respectively attached to the outer surfaces of the front and rear sides of the bracket 400. In this way, the various components can be reasonably arranged on the bracket 400, making the overall structure of the aerosol generating device more compact.

[0081] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0082] The aerosol generating apparatus provided in the embodiments of this application has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this application. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An aerosol generating device, characterized by, include: The housing (100) has a first through hole (101) at its top; An atomizer is disposed inside the housing (100). The atomizer includes a heating tube (210) and a heat insulation tube (220). A heating chamber (201) is formed inside the heating tube (210), and the heat insulation tube (220) is sleeved on the outside of the heating tube (210). A first air passage (202) is formed in the gap between the inner wall of the heat insulation tube (220) and the outer wall of the heating tube (210). The air inlet and air outlet of the first air passage (202) are respectively connected to the first through hole (101) and the heating chamber (201).

2. An aerosol generation device according to claim 1, wherein, The atomizer also includes an annular mounting base (230), the inner side of which is connected to the heating tube (210), and the outer side of which is connected to the heat insulation tube (220); the outer side of the mounting base (230) is provided with a first air groove (231), which connects the spaces at both ends of the axial direction of the mounting base (230).

3. An aerosol generation device according to claim 2, wherein, The atomizer includes two mounting bases (230). The upper end of the heating tube (210) is connected to the upper end of the heat insulation tube (220) through one of the mounting bases (230), and the lower end of the heating tube (210) is connected to the lower end of the heat insulation tube (220) through the other mounting base (230).

4. An aerosol generation device according to claim 3, wherein, The inner side of the fixing seat (230) abuts against the heating tube (210), and the outer side of the fixing seat (230) abuts against the heat insulation tube (220); a second air groove (232) is provided on one end surface of the fixing seat (230) in the axial direction, the second air groove (232) is connected to the first air groove (231), and the second air grooves (232) of the two fixing seats (230) are arranged opposite to each other.

5. An aerosol generation device according to claim 2, wherein, The inner side of the fixing base (230) is provided with a groove (233); And / or, the inner side of the heat insulation pipe (220) is provided with a positioning groove (221), and the outer side of the fixing seat (230) is provided with a first positioning protrusion (234), which is inserted into the positioning groove (221).

6. The aerosol generation device of claim 1, wherein, The heating tube (210) is made of magnetic material. The atomizer also includes a magnetic field generator (240) and a magnetic shielding tube (260). The magnetic shielding tube (260) is sleeved on the outside of the heat insulation tube (220). The magnetic field generator (240) is located between the magnetic shielding tube (260) and the heat insulation tube (220) and can generate a magnetic field to cause the heating tube (210) to heat up.

7. An aerosol generation device according to claim 6, wherein, The atomizer includes a plurality of magnetic shielding tubes (260), which are sequentially sleeved on the outside of the heat insulation tube (220) from the inside to the outside, and heat insulation cotton (270) is provided between two adjacent magnetic shielding tubes (260).

8. The aerosol generation device of claim 1, wherein, The atomizer also includes a temperature sensing element (280) and a heat shrink tubing (290). The heat shrink tubing (290) is sleeved on the outside of the heating tube (210). The temperature sensing element (280) is sandwiched between the heating tube (210) and the heat shrink tubing (290), and the temperature sensing element (280) is thermally connected to the heating tube (210).

9. An aerosol generating device according to any of claims 1 to 8, wherein, The aerosol generating device further includes a fixing tube (300) and a bracket (400). The bracket (400) is disposed inside the housing (100), and the atomizer is disposed on the bracket (400). One end of the fixing tube (300) is supported on the bottom of the atomizer, and the other end of the fixing tube (300) is fixed on the bracket (400).

10. An aerosol generation device according to claim 9, wherein, The aerosol generating device further includes a decorative cover (510) and a mounting base (520). The decorative cover (510) is disposed over the first through hole (101) and is mounted on the bracket (400) via the mounting base (520). The decorative cover (510) is provided with a second through hole (511) communicating with the first through hole (101), and the mounting base (520) is provided with a mounting through hole (522) that is opposite to and communicates with the second through hole (511). The mounting through hole (522) is communicated with the air inlet end of the first air passage (202).

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