Aerosol generation device

Abstract

The application provides an aerosol generating device, which comprises a shell, an atomizer and a third air channel. The top and bottom of the shell are respectively provided with a first through hole and a second through hole. The atomizer is arranged inside the shell and has a heating cavity. The third air channel is arranged between the heating cavity and the second through hole. The air inlet end of the third air channel is in communication with the second through hole, and the air outlet end of the third air channel is in communication with the heating cavity. The outer periphery of the heating cavity is provided with a first air channel. The air inlet end of the first air channel is in communication with the first through hole, and the air outlet end of the first air channel is in communication with the heating cavity. A second air channel is formed between the atomizer and the shell. The air inlet end of the second air channel is in communication with the first through hole, and the air outlet end of the second air channel is in communication with the air inlet end of the third air channel. When a user sucks the aerosol generated by the aerosol generating device, external cold air will enter the shell through the first through hole and flow through the first air channel and / or the second air channel, and at the same time, the external cold air will also enter the third air channel through the second through hole.

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 third air passage. The top and bottom of the housing are respectively provided with a first through hole and a second through hole. The atomizer is disposed inside the housing and has a heating chamber. The third air passage is disposed between the heating chamber and the second through hole. The inlet end of the third air passage is connected to the second through hole, and the outlet end of the third air passage is connected to the heating chamber. The heating chamber is provided with a first air passage on its outer periphery. The inlet end of the first air passage is connected to the first through hole, and the outlet end of the first air passage is connected to the heating chamber. And / or a second air passage is formed between the atomizer and the housing. The inlet end of the second air passage is connected to the first through hole, and the outlet end of the second air passage is connected to the inlet end of the third air passage.

[0006] Optionally, the atomizer includes a heating tube and a heat insulation tube. The heating tube forms the heating chamber inside, and the heat insulation tube is sleeved on the outside of the heating tube. A gap is provided between the inner wall of the heat insulation tube and the outer wall of the heating tube to form the first air passage.

[0007] Optionally, 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 connects the spaces at both axial ends of the mounting base.

[0008] Optionally, the atomizer includes two mounting bases, with the upper end of the heating tube connected to the upper end of the heat insulation tube via one of the mounting bases, and the lower end of the heating tube connected to the lower end of the heat insulation tube via the other mounting base.

[0009] Optionally, 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 in 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.

[0010] Optionally, 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.

[0011] Optionally, the aerosol generating device further includes a support, which is disposed inside the housing, and the atomizer is disposed on the support, forming a second air passage between the support and the housing.

[0012] Optionally, the aerosol generating device further includes a decorative cover and a mounting base. The decorative cover is disposed at the first through hole and is mounted on the bracket via the mounting base. The decorative cover has a third through hole communicating with the first through hole. The outer surface of the mounting base has a third air groove, which is connected to the third through hole and the air inlet end of the second air passage, respectively.

[0013] Optionally, the aerosol generating device further includes a fixing tube, which is supported at the bottom of the atomizer, and the interior of the fixing tube forms the third air passage.

[0014] Optionally, the bottom of the bracket is provided with a bracket through hole that is opposite to and communicates with the second through hole, and the aerosol generating device further includes a rotating cover door that is rotatably installed on the second through hole, and the rotating cover door is provided with an air passage hole that communicates with the third air passage.

[0015] The aerosol generating device provided in this application embodiment has a first air passage on the outer periphery of the heating chamber and / or a second air passage formed between the atomizer and the housing, and a third air passage between the heating chamber and the second through hole. In use, the aerosol product is inserted into the heating chamber of the atomizer, and the aerosol product is heated to generate aerosol for the user to inhale. When the user inhales the aerosol, external cold air enters the housing through the first through hole, and the cold air flows through the first air passage and / or the second air passage, finally entering the heating chamber. The cold air flowing through the first air passage transfers heat from the first air passage to the heating chamber, heating the aerosol product. Simultaneously, it can also... The first air passage is ventilated to cool it down, reducing heat conduction to the shell. The cold air flowing through the second air passage transfers heat from the atomizer's periphery to the heating chamber, reducing heat conduction to the shell and thus lowering the shell's surface temperature. Simultaneously, external cold air enters the third air passage through the second through-hole and finally enters the heating chamber. The fast airflow from the second through-hole draws air from inside the shell into the heating chamber through the third air passage, further reducing heat conduction to the shell and lowering its surface temperature. This achieves cooling, improved heat utilization, and rapid heating, ensuring that the aerosol generator 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 first 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 first 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 7 The diagram shows a second cold air flow path for the aerosol generating device.

[0026] Figure 10 for Figure 9 The diagram shows an enlarged view of part C of the aerosol generating device.

[0027] Figure 11 for Figure 7 The diagram shows a third cold air flow path for the aerosol generating device.

[0028] Figure 12 for Figure 11 The diagram shows an enlarged view of part D of the aerosol generating device.

[0029] Figure 13 for Figure 11 The diagram shows an enlarged view of a portion E of the aerosol generating device.

[0030] Figure 14 for Figure 1 A top view of the aerosol generating device shown.

[0031] Figure 15 for Figure 1 The diagram shown is a schematic of the aerosol generating device without the casing.

[0032] Figure 16 for Figure 15 A schematic diagram of the aerosol generating device from another perspective.

[0033] Figure 17 for Figure 1 The diagram shows the exploded structure of the aerosol generating device.

[0034] Figure 18 This is an exploded structural diagram of the shell provided in an embodiment of this application.

[0035] Figure 19 This is a partial structural schematic diagram of the atomizer provided in an embodiment of this application.

[0036] Figure 20 for Figure 19 The diagram shows the exploded structure of the atomizer.

[0037] Figure 21 for Figure 19 The diagram shows another view of the atomizer's structure.

[0038] Figure 22 for Figure 21 The diagram shows a cross-sectional view of the atomizer along its longitudinal direction.

[0039] Figure 23 This is a schematic diagram of the heating tube, the mounting base, and the temperature measuring element provided in the embodiments of this application.

[0040] Figure 24 for Figure 23 A schematic diagram of the heating tube, mounting base, and temperature sensing element from another perspective.

[0041] Figure 25 This is a schematic diagram of the structure of the heat insulation pipe provided in the embodiment of this application.

[0042] Figure 26 This is a schematic diagram of the structure of the fixing base provided in the embodiment of this application.

[0043] Figure 27 This is a schematic diagram of a second structure of the fixing seat provided in an embodiment of this application.

[0044] Figure 28 This is a schematic diagram of the structure of the fixed tube provided in an embodiment of this application.

[0045] Figure 29 This is a schematic diagram of the structure of the bracket provided in an embodiment of this application.

[0046] Figure 30 This is a schematic diagram of the structure of the decorative cover provided in an embodiment of this application.

[0047] Figure 31 This is a schematic diagram of the mounting base provided in an embodiment of this application.

[0048] Figure 32 This is a structural schematic diagram of the rotating cover and connecting assembly provided in an embodiment of this application.

[0049] Explanation of icon numbers:

[0050] 1. Aerosol product; 100. Shell; 101. First through hole; 102. Second through hole; 110. First shell; 120. Second shell; 201. Heating chamber; 202. First air passage; 203. Second air passage; 204. Third 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; 270. Heat insulation 280. Cotton; 290. Temperature sensing element; 300. Heat shrink tubing; 310. Fixing tube; 320. Support part; 330. Mating part; 400. Second positioning protrusion; 401. Bracket; 402. Bracket through hole; 510. Decorative cover; 511. Third through hole; 520. Mounting base; 521. Mounting through hole; 522. Third air groove; 610. Rotating cover; 611. Air passage hole; 620. Rotating shaft; 630. Torsion spring; 710. Main control circuit board; 720. Power supply; 730. Button board; 740. Switch button; 750. Decorative part; 760. Light guide; 770. Vibrator; 780. Heat sink. Detailed Implementation

[0051] 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.

[0052] 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.

[0053] 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.

[0054] This application provides an aerosol generating device, such as... Figures 1 to 32 As shown, the aerosol generating device includes a housing 100, an atomizer, and a third air passage 204. The top and bottom of the housing 100 are respectively provided with a first through hole 101 and a second through hole 102 (e.g., ...). Figure 18 (As shown); The atomizer is disposed inside the housing 100 and is used to heat the aerosol product 1. The atomizer has a heating chamber 201, and a third air passage 204 is disposed between the heating chamber 201 and the second through hole 102. The air inlet end of the third air passage 204 is connected to the second through hole 102, and the air outlet end of the third air passage 204 is connected to the heating chamber 201. The heating chamber 201 is provided with a first air passage 202 on its outer periphery. 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. And / or a second air passage 203 is formed between the atomizer and the housing 100. The air inlet end of the second air passage 203 is connected to the first through hole 101, and the air outlet end of the second air passage 203 is connected to the air inlet end of the third air passage 204.

[0055] When the aerosol generating device provided in this embodiment is used, an 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 has a first air passage 202 on the outer periphery of the heating chamber 201 and / or a second air passage 203 formed between the atomizer and the housing 100. A third air passage 204 is also provided between the heating chamber 201 and the second through-hole 102. This allows external cold air to enter the housing 100 through the first through-hole 101 when the user inhales the aerosol. The cold air entering through the first through-hole 101 flows through the first air passage 202 and / or the second air passage 203, and finally enters the heating chamber 201. The cold air flowing through the first air passage 202 can dissipate the heat within the first air passage 202. The heat is transferred to the heating chamber 201 to heat the aerosol product 1. At the same time, it can also ventilate and cool the first air passage 202, reducing heat conduction to the shell 100. The cold air flowing through the second air passage 203 can transfer the heat from the periphery of the atomizer to the heating chamber 201, reducing heat conduction to the shell 100, thereby reducing the surface temperature of the shell 100. At the same time, the external cold air will also enter the third air passage 204 through the second through hole 102, and finally enter the heating chamber 201. When the cold air enters through the second through hole 102, the cold air flow rate is fast, which will drive the air inside the shell 100 to flow into the heating chamber 201 from the third air passage 204, reducing heat conduction to the shell 100, thereby reducing the surface temperature of the shell 100. This achieves the effects of cooling, improving heat utilization, and rapid heating, so that the aerosol generating device will not become too hot to handle during use.

[0056] It is understood that the aerosol generating device of this application is provided with at least one of the first air passage 202 and the second air passage 203. That is, the aerosol generating device may be provided with the first air passage 202 but not with the second air passage 203, or the aerosol generating device may be provided with the second air passage 203 but not with the first air passage 202, or the aerosol generating device may be provided with both the first air passage 202 and the second air passage 203.

[0057] Specifically, when the aerosol generating device has a first air passage 202 but no second air passage 203, such as Figure 3 and Figure 7 As shown, the cold air flow path of the aerosol generating device is as follows: external cold air enters through the first through hole 101, then flows through the first air passage 202, and finally enters the heating chamber 201; at the same time, external cold air also enters through the second through hole 102, then flows through the third air passage 204, and finally enters the heating chamber 201.

[0058] When the aerosol generating device is equipped with a second air passage 203 but not a first air passage 202, such as Figure 9As shown, the cold air flow path of the aerosol generating device is as follows: external cold air enters through the first through hole 101, then flows through the second air passage 203 and the third air passage 204 in sequence, and finally enters the heating chamber 201; at the same time, external cold air also enters through the second through hole 102, then flows through the third air passage 204, and finally enters the heating chamber 201.

[0059] When the aerosol generating device is equipped with both a first air passage 202 and a second air passage 203, such as Figure 11 As shown, the cold air flow path of the aerosol generating device is as follows: after the external cold air enters through the first through hole 101, part of the cold air flows through the first air passage 202 and finally enters the heating chamber 201, while the other part of the cold air flows through the second air passage 203 and the third air passage 204 in sequence and finally enters the heating chamber 201; at the same time, the external cold air also enters through the second through hole 102, then flows through the third air passage 204 and finally enters the heating chamber 201.

[0060] In some embodiments of this application, such as Figures 6 to 13 , Figures 19-24 As shown, the atomizer includes a heating tube 210 and a heat insulation tube 220. A heating chamber 201 is formed inside the heating tube 210. The heat insulation tube 220 is sleeved on the outside of the heating tube 210, and a gap is provided between the inner wall of the heat insulation tube 220 and the outer wall of the heating tube 210 to form a first air passage 202. The heating tube 210 generates heat to heat the aerosol product 1; the heat insulation tube 220 provides insulation, reducing heat loss from the heating tube 210.

[0061] Optionally, the heating tube 210 is made of a magnetically conductive material (such as iron, permalloy, etc.), and the atomizer also includes a magnetic field generator 240. The magnetic field generator 240 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. Among them, 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 is conducive to the miniaturization of the aerosol generating device.

[0062] 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.

[0063] 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.

[0064] In some embodiments of this application, such as Figure 6 , Figure 17 , Figures 19-27 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.

[0065] 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.

[0066] 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 6 , Figure 17 , Figures 19-24As 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.

[0067] Specifically, such as Figure 26 and Figure 27 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.

[0068] Optional, such as Figure 26 and Figure 27 As 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.

[0069] Optional, such as Figure 26 and Figure 27As 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.

[0070] 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 transfer 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.

[0071] Optional, such as Figure 25 As shown, the inner surface of the heat insulation pipe 220 is provided with a positioning groove 221, such as... Figure 26 and Figure 27 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.

[0072] 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.

[0073] In some embodiments of this application, when the atomizer further includes a magnetic field generator 240, such as Figures 6-17 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.

[0074] 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 6 and Figure 17 As shown, the atomizer includes two magnetic shielding tubes 260. For ease of description, the two magnetic shielding tubes 260 are defined as the inner magnetic shielding tube and the outer magnetic shielding tube, respectively. The inner magnetic shielding tube is sleeved on the outside of the heat insulation tube 220, and the outer magnetic shielding tube is sleeved on the outside of the inner magnetic shielding tube. Heat insulation cotton 270 is provided between the two magnetic shielding tubes 260.

[0075] In some embodiments of this application, such as Figure 6 , Figure 17 , Figures 19-24 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.

[0076] In some embodiments of this application, such as Figure 6 , Figures 15-17 and Figure 28As 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 interior of the fixing tube 300 forms the third air passage 204. The lower end of the fixing tube 300 is the air inlet of the third air passage 204, which is connected to the second through hole 102. The upper end of the fixing tube 300 is the air outlet of the third air passage 204, which is connected to the heating chamber 201. Specifically, when a second air passage 203 is formed between the atomizer and the housing 100, the air inlet of the second air passage 203 is connected to the first through hole 101, the air outlet of the second air passage 203 is connected to the lower end of the fixed tube 300 (i.e., the air inlet of the third air passage 204), and the upper end of the fixed tube 300 (i.e., the air outlet of the third air passage 204) is connected to the heating chamber 201. A portion of the cold air entering from the first through hole 101 of the housing 100 will flow through the interior of the second air passage 203 and the fixed tube 300 in sequence, and finally enter the heating chamber 201. The fixed tube 300 provides a longer flow path for the portion of cold air entering the second air passage 203, thereby transferring more heat from the interior of the housing 100 to the heating chamber 201, thus better reducing the surface temperature of the housing 100.

[0077] Optional, such as Figure 28 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 28 As 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.

[0078] like Figure 6 , Figures 15-17 and Figure 29 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.

[0079] In some embodiments of this application, such as Figures 6-7 , Figures 15-17 and Figure 32The aerosol generating device also includes a rotating cover 610, and the bottom of the bracket 400 is provided with a bracket through hole 401 that is opposite to and communicates with the second through hole 102 (e.g., Figure 29 As shown, a rotating cover 610 is rotatably mounted on the bracket through hole 401 to open and close the bracket through hole 401. The rotating cover 610 has an air passage hole 611 that communicates with the third air passage 204 (i.e., the lower end of the fixed tube 300). By setting up the rotating cover 610, it serves both a decorative purpose and facilitates the cleaning of soot inside the heating tube 210. That is, the user can open the rotating cover 610 and insert cleaning tools through the second through hole 102, the bracket through hole 401, and the fixed tube 300 to clean the interior of the heating tube 210. Specifically, external cold air enters through the second through hole 102, flows through the air passage hole 611, the bracket through hole 401, and the third air passage 204 (i.e., the interior of the fixed tube 300) in sequence, and finally enters the heating chamber 201.

[0080] Specifically, the rotating cover 610 is mounted to the through hole 401 of the bracket via a connecting assembly, such as... Figure 17 and Figure 32 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 29 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.

[0081] Optional, such as Figures 1 to 7 , Figure 17 and Figure 18 As 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 second through hole 102 are respectively disposed on the first housing 110 and the second housing 120.

[0082] In some embodiments of this application, such as Figures 1 to 17 , Figure 30 and Figure 31 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 third through hole 511 communicating with the first through hole 101 (e.g., ...). Figure 30 As shown), the outer surface of the mounting base 520 is provided with a third air groove 522 (as shown). Figure 31As shown, the third air groove 522 is connected to the air inlet end of the third through hole 511 and the second air channel 203. Specifically, when the user inhales the aerosol, external cold air will enter the housing 100 through the third through hole 511, and part of the cold air will enter the heating chamber 201 through the first air channel 202, while the other part of the cold air will flow sequentially through the third air groove 522, the second air channel 203 and the fixing pipe 300 of the mounting base 520, and finally enter the heating chamber 201.

[0083] Specifically, such as Figure 31 As shown, the mounting base 520 is provided with a mounting through hole 521 that is opposite to and communicates with the third through hole 511. The mounting through hole 521 is connected to the air inlet end of the first air passage 202. The heating through hole of the heating tube 210 is arranged opposite to the mounting through hole 521. The aerosol product 1 can be inserted into the heating chamber 201 after passing through the third through hole 511, the mounting through hole 521 and the heating through hole in sequence.

[0084] 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:

[0085] Figure 3 and Figure 7 The aerosol generating device shown has a first air passage 202 but no second air passage 203. This aerosol generating device heats a cartridge inserted into the heating chamber 201 to generate an aerosol for the user to inhale. When the user inhales the aerosol, external cold air enters the housing 100 through the mounting hole 521 of the decorative cover 510, and then flows sequentially through the mounting 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, causing the first air passage 202 to... The heat inside is transferred to the cartridge to heat it. At the same time, the cold air can also cool the first fixing seat 230a, the second fixing seat 230b and the first air channel 202, reducing the heat conduction to the housing 100, thereby reducing the surface temperature of the housing 100. Meanwhile, external cold air also enters from the second through hole 102, and then flows through the inside of the fixing tube 300 (i.e. the third air channel 204) and the middle of the second fixing seat 230b in sequence, and finally enters the heating chamber 201. This process will drive the air inside the housing 100 to flow into the heating chamber from the third air channel 204, reducing the heat conduction to the housing 100, thereby reducing the surface temperature of the housing 100, so that the aerosol generating device will not become hot to the touch during use.

[0086] Taking aerosol product 1 as an example of a cigarette cartridge, for Figure 9The cold air flow path of the aerosol generating device shown is explained below:

[0087] Figure 9 The aerosol generating device shown has a second air passage 203 but no first air passage 202. This aerosol generating device heats a cartridge inserted into the heating chamber 201 to generate an aerosol for the user to inhale. When the user inhales the aerosol, external cold air enters the housing 100 through the mounting hole 521 of the decorative cover 510, and then flows sequentially through the third air groove 522 of the mounting base 520, the second air passage 203, the interior of the fixing tube 300 (i.e., the third air passage 204), and the middle of the second fixing base 230b into the cartridge, causing heat to be transferred from the second air passage 203 to the heating chamber. The heated cartridge reduces heat conduction to the housing 100, thus lowering the surface temperature of the housing 100. Simultaneously, external cold air enters through the second through-hole 102, flows sequentially through the interior of the fixed tube 300 (i.e., the third air passage 204) and the middle of the second fixed seat 230b, and finally enters the heating chamber 201. This process drives the air inside the housing 100 to flow into the heating chamber through the third air passage 204, reducing heat conduction to the housing 100 and thereby lowering the surface temperature of the housing 100, ensuring that the aerosol generating device does not become too hot to handle during use.

[0088] Taking aerosol product 1 as an example of a cigarette cartridge, for Figure 11 The cold air flow path of the aerosol generating device shown is explained below:

[0089] Figure 11The aerosol generating device shown is equipped with a first airway 202 and a second airway 203. This aerosol generating device heats a cartridge inserted into the heating chamber 201 to generate an aerosol for the user to inhale. When the user inhales the aerosol, external cold air enters the housing 100 through the mounting hole 521 of the decorative cover 510 and splits into two streams. One stream of cold air flows sequentially through the second air groove 232 of the first fixing seat 230a, the first air groove 231 of the first fixing seat 230a, the first airway 202, the first air groove 231 of the second fixing seat 230b, the second air groove 232 of the second fixing seat 230b, and the middle of the second fixing seat 230b before entering the cartridge. This transfers heat from the first airway 202 to the cartridge, heating it. Simultaneously, this cold air also cools the first fixing seat 230a, the second fixing seat 230b, and the first airway 202, reducing heat conduction to the housing 100. This reduces the surface temperature of the housing 100. Another stream of cold air flows sequentially through the third air groove 522 of the mounting base 520, the second air passage 203, the interior of the fixing tube 300 (i.e., the third air passage 204), and the middle of the second fixing base 230b into the cartridge, transferring heat from the second air passage 203 to the cartridge and heating it, thus reducing heat conduction to the housing 100 and lowering the surface temperature of the housing 100. At the same time, external cold air also enters through the second through hole 102, then flows sequentially through the interior of the fixing tube 300 (i.e., the third air passage 204) and the middle of the second fixing base 230b, and finally enters the heating chamber 201. This process will cause the air inside the housing 100 to flow into the heating chamber from the third air passage 204, reducing heat conduction to the housing 100 and lowering the surface temperature of the housing 100, so that the aerosol generating device will not become hot to the touch during use.

[0090] like Figure 1 , Figure 6 , Figures 15-17 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.

[0091] 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.

[0092] In some embodiments of this application, such as Figures 15-17 As 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.

[0093] Specifically, in combination Figure 6 and Figures 15-17 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. One end of the fixing tube 300 supports the bottom of the atomizer, and the other end of the fixing tube 300 is fixed to the bracket 400. The main control circuit board 710 is located between the power supply 720 and the atomizer. 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.

[0094] 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.

[0095] 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 in that, include: The housing (100) has a first through hole (101) and a second through hole (102) at its top and bottom, respectively; An atomizer is disposed inside the housing (100), the atomizer having a heating chamber (201); A third air passage (204) is provided between the heating chamber (201) and the second through hole (102). The air inlet of the third air passage (204) is connected to the second through hole (102), and the air outlet of the third air passage (204) is connected to the heating chamber (201). The heating chamber (201) is provided with a first air passage (202) on its outer periphery. 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). And / or a second air passage (203) is formed between the atomizer and the housing (100). The air inlet end of the second air passage (203) is connected to the first through hole (101), and the air outlet end of the second air passage (203) is connected to the air inlet end of the third air passage (204).

2. The aerosol generating device according to claim 1, characterized in that, The atomizer includes a heating tube (210) and a heat insulation tube (220). The heating tube (210) forms the heating chamber (201) inside. The heat insulation tube (220) is sleeved on the outside of the heating tube (210), and a gap is provided between the inner wall of the heat insulation tube (220) and the outer wall of the heating tube (210) to form the first air passage (202).

3. The aerosol generating device according to claim 2, characterized in that, 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).

4. The aerosol generating device according to claim 3, characterized in that, 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).

5. The aerosol generating device according to claim 4, characterized in that, 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.

6. The aerosol generating apparatus according to any one of claims 3 to 5, characterized in that, 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).

7. The aerosol generating apparatus according to any one of claims 1, 3 to 5, characterized in that, The aerosol generating device further includes a support (400) disposed inside the housing (100), the atomizer being disposed on the support (400), and a second air passage (203) being formed between the support (400) and the housing (100).

8. The aerosol generating apparatus according to claim 7, characterized in that, 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 third through hole (511) communicating with the first through hole (101), and the outer surface of the mounting base (520) is provided with a third air groove (522), which is connected to the third through hole (511) and the air inlet end of the second air passage (203) respectively.

9. The aerosol generating apparatus according to claim 7, characterized in that, The bottom of the bracket (400) is provided with a bracket through hole (401) that is opposite to and communicates with the second through hole (102). The aerosol generating device also includes a rotating cover (610), which is rotatably covered at the second through hole (102). The rotating cover (610) is provided with an air passage hole (611) that communicates with the third air passage (204).

10. The aerosol generating apparatus according to any one of claims 1, 3 to 5, characterized in that, The aerosol generating device further includes a fixed tube (300) supported at the bottom of the atomizer, and the interior of the fixed tube (300) forms the third air passage (204).

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