An aerosol generating device

Abstract

The invention discloses an aerosol generating device, comprising a housing; an atomizing part for atomizing an aerosol generating substrate, the atomizing part is provided with an atomizing chamber for storing the aerosol generating substrate, and also comprises a pressing part, the top surface of the pressing part is provided with a through hole, the through hole is coaxially arranged with the atomizing chamber, a heat-insulating cavity is formed between the atomizing part and the pressing part, and the volume of the heat-insulating cavity can be changed by operating the pressing part; in a first position, the heat-insulating cavity has a first volume, and in the axial direction of the atomizing part, the top surface of the pressing part and the atomizing part have a first distance; in a second position, the heat-insulating cavity has a second volume, and in the axial direction of the atomizing part, the top surface of the pressing part and the atomizing part have a second distance, wherein, in the second position, the length of the aerosol generating substrate extending from the pressing part is greater than the length of the pressing part extending in the first position, for taking out the aerosol generating substrate. The device can not only fully dissipate heat, but also can conveniently heat a cigarette having only a tobacco segment.

Description

Technical Field

[0001] The present invention relates to the technical field of heat-not-burn smoking articles, and in particular to an aerosol generating device. Background Art

[0002] As people pay more and more attention to health, they realize that traditional cigarettes are harmful to health. Therefore, heat-not-burn products have emerged. Heat-not-burn cigarettes heat the tobacco in the cigarette through heat-not-burn smoking utensils, releasing smoke for users to inhale. Compared with traditional cigarettes, the tobacco is not burned, so no complex chemical reactions will occur to produce harmful substances such as tar and carbon monoxide, allowing users to enjoy the smoking experience while reducing the inhalation of harmful substances.

[0003] Traditional heat-not-burn cigarettes have a complex filter rod structure with cooling sections and filtering sections, which not only increases the processing cost of cigarettes, but also reduces the production efficiency of cigarettes. At the same time, traditional heat-not-burn smoking devices are not suitable for cigarettes with only tobacco segments, and the heating temperature of traditional heat-not-burn smoking devices is very high. After continuous use of the smoking device, the smoking device will be in a high temperature state for a long time, which is easy to damage the electronic components of the smoking device, and the user is also prone to burns during use.

[0004] Therefore, how to provide a heat-not-burn smoking device that is easy to dissipate heat and can heat cigarettes with only tobacco segments is a problem that needs to be solved urgently in the art. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the aerosol generating device does not dissipate heat sufficiently and cannot heat cigarettes with only tobacco segments. The present invention provides an aerosol generating device that can not only dissipate heat sufficiently but also heat cigarettes with only tobacco segments very conveniently.

[0006] In order to solve the above technical problems, the present invention provides an aerosol generating device, comprising a shell; an atomizing part, which is used to atomize an aerosol generating substrate, the atomizing part is provided with an atomizing chamber, which is used to store the aerosol generating substrate, and also includes a pressing part, the top surface of the pressing part is provided with a through hole, the through hole is coaxially arranged with the atomizing chamber, and an insulating cavity is formed between the atomizing part and the pressing part, and the volume of the insulating cavity can be changed by operating the pressing part; in a first position, the insulating cavity has a first volume, and in the axial direction of the atomizing part, the top surface of the pressing part and the atomizing part have a first distance; in a second position, the insulating cavity has a second volume, and in the axial direction of the atomizing part, the top surface of the pressing part and the atomizing part have a second distance, wherein, in the second position, the length of the aerosol generating substrate extending from the pressing part is greater than the length of the pressing part extending in the first position, so as to remove the aerosol generating substrate from the atomizing chamber.

[0007] By adopting the above technical solution, the pressing part can automatically reset after being pressed, and repeated pressing can change the volume of the heat-insulating cavity, thereby promoting airflow to flow through the atomization part, which is conducive to sufficient heat dissipation and prevents the aerosol generating device from overheating after continuous use. It is beneficial to protect electronic components and avoid burns to users, and can easily heat cigarettes with only tobacco segments.

[0008] Further, when the pressing portion is at the second position, the top surface of the pressing portion does not contact the atomizing portion.

[0009] Furthermore, a limiting member is provided on the pressing portion, and when in the first position, the limiting member enables a first distance between the top surface of the pressing portion and the atomizing portion.

[0010] Furthermore, the pressing part comprises a pressing plate, on which a guide member is arranged, and the guide member cooperates with the atomizing part to guide the movement of the pressing part.

[0011] Furthermore, a mounting portion is provided on the shell, and the pressing portion is mounted on the mounting portion.

[0012] Furthermore, the mounting portion includes a mounting cavity, a mounting hole is provided in the mounting cavity, an opening is provided at the edge of the mounting hole, and the limiting member is located in the opening; when in the first position, the limiting member abuts against the opening.

[0013] Furthermore, it also includes a first restoring member, which is used to restore the pressing part from the second position to the first position.

[0014] Furthermore, the first restoring member is an elastic member, and two ends of the elastic member are respectively in contact with the pressing portion and the shell.

[0015] Furthermore, the first reset member includes a first magnet and a second magnet, the first magnet is arranged on the pressing part, and the second magnet is arranged on the shell, and a repulsive force is generated between the first magnet and the second magnet to reset the pressing part from the second position to the first position.

[0016] Furthermore, the ratio of the second volume to the first volume of the heat-insulating cavity does not exceed 60%, and the difference between the first distance and the second distance is not less than 4 mm.

[0017] Furthermore, it also includes: an air inlet channel, which is connected to the atomization chamber; an air outlet channel, which is connected to the air inlet channel; and a supplementary air inlet channel, through which external air enters the aerosol generating device.

[0018] Furthermore, the supplementary air inlet passage and the air outlet passage are on the same straight line.

[0019] Further, the air inlet passage is perpendicular to both the supplementary air inlet passage and the air outlet passage.

[0020] Furthermore, an air inlet port of the supplementary air inlet passage is provided with an airway end plug, and the airway end plug includes an air inlet structure so that external air can enter the supplementary air inlet passage through the airway end plug.

[0021] Furthermore, an elastic valve is provided at the air intake structure of the airway end plug, and the elastic valve can open when subjected to suction to allow outside air to enter the supplementary air intake channel through the airway end plug; when the elastic valve is in a closed state, there is a boundary gap between the elastic valve and the air intake structure, and outside air enters the supplementary air intake channel through the boundary gap.

[0022] Furthermore, when the elastic valve is in a closed state, the ventilation area of ​​the boundary gap is not less than 0.5 mm 2 .

[0023] Furthermore, when the elastic valve is opened to the maximum position, the supplementary air inlet channel has a first ventilation area, and when the elastic valve is in the closed state, the supplementary air inlet channel has a second ventilation area, and the second ventilation area is within 0.5 times of the first ventilation area.

[0024] Further, the first ventilation area of ​​the supplementary intake passage is within 0.67 times the cross-sectional area of ​​the intake passage.

[0025] Further, the cross-sectional area of ​​the air outlet passage is within 0.5 times the cross-sectional area of ​​the air inlet passage.

[0026] Furthermore, the sum of the cross-sectional area of ​​the air outlet passage and the first ventilation area of ​​the supplementary air intake passage is within 1 times the cross-sectional area of ​​the air intake passage.

[0027] Furthermore, the atomization chamber jacket is provided with a heat insulation layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a cross-sectional view of an aerosol generating device according to an embodiment of the present invention;

[0029] Figure 2a A three-dimensional diagram of a T-shaped airway of an aerosol generating device according to an embodiment of the present invention;

[0030] Figure 2b is a three-dimensional exploded view of a T-shaped airway of an aerosol generating device according to an embodiment of the present invention;

[0031] Figure 2c is a cross-sectional view of a T-shaped airway of an aerosol generating device according to an embodiment of the present invention;

[0032] Figure 3 is a three-dimensional diagram of an airway end plug of an aerosol generating device according to an embodiment of the present invention;

[0033] Figure 4a A three-dimensional diagram of an aerosol generating device according to an embodiment of the present invention in a closed state of an airway end plug;

[0034] Figure 4b is a cross-sectional view of the aerosol generating device according to an embodiment of the present invention in a closed state of the airway end plug;

[0035] Figure 5a A three-dimensional diagram of an aerosol generating device according to an embodiment of the present invention with the airway end plug opened;

[0036] Figure 5b is a cross-sectional view of an aerosol generating device according to an embodiment of the present invention with the airway end plug opened;

[0037] Figure 6 is a three-dimensional diagram of an aerosol generating device according to an embodiment of the present invention;

[0038] Figure 7 is a cross-sectional view of the aerosol generating device according to an embodiment of the present invention in a state where the pressure plate is in a spring-up state;

[0039] Figure 8 It is a cross-sectional view of the aerosol generating device according to an embodiment of the present invention when the pressing plate is in a pressed down state. DETAILED DESCRIPTION

[0040] The following specific embodiments illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may extend based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0041] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0042] In the description of this embodiment, it should be noted that the terms "upper" and "lower" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. These are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the invention.

[0043] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0044] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0045] like Figure 1 As shown, the aerosol generating device 100 includes: a housing 101, an indicator light 102, a button 103, a nozzle 104, a battery 105, a vibrator 106, and an atomizing part. The atomizing part has an atomizing chamber 10, and the atomizing chamber 10 is used to atomize the aerosol generating substrate to generate aerosol; the atomizing chamber 10 contains a heating component 11 in contact with the aerosol generating substrate 200, and the atomizing chamber 10 is also provided with a heat insulating layer 12 outside to prevent heat diffusion from causing the housing of the aerosol generating device to become hot; an air inlet channel 21, the air inlet channel 21 is connected to the atomizing chamber 10 ; The air outlet 22 can be made of a metal tube, a ceramic tube, or a plastic tube. One end of the air outlet 22 is connected to the air inlet 21, and the other end is connected to the suction nozzle 104; the supplementary air inlet 23, the air inlet port of the supplementary air inlet 23 is provided with an airway end plug 231, and the airway end plug 231 is made of a flexible material such as silicone, PVC, or TPU. The supplementary air inlet 23 is connected to the air outlet 22, and the outside air entering from the supplementary air inlet 23 is mixed with the aerosol formed in the atomizing chamber 10 and then enters the air outlet 22. The outside air entering from the supplementary air inlet 23 will not affect the temperature in the atomizing chamber 10 and cause its heat loss, so the aerosol generating device 100 does not need to consume extra energy to maintain the temperature of the atomizing chamber, which reduces energy waste, and at the same time, the temperature of the aerosol can be effectively reduced when the outside air is mixed with the aerosol.

[0046] The supplementary air inlet channel 23 is in the same straight line as the air outlet channel 22, forming a linear channel. The falling materials and condensed liquid of other aerosol-generating matrix carriers of the cigarette in the atomization chamber 10 will fall into the linear channel through the air inlet channel 21, and the cotton swab can penetrate into the interior of the linear channel through the port of the linear channel for cleaning.

[0047] The air inlet channel 21 is perpendicular to the supplementary air inlet channel 23 and the air outlet channel 22, forming a T-shaped airway. Traditional heat-not-burn tobacco products need to control the temperature of the aerosol when heating cigarettes. Tobacco substances are more likely to produce a sufficient amount of aerosol at a higher temperature, and a higher temperature is also conducive to the release of flavor substances with the aerosol. However, a higher heating temperature can easily cause the aerosol temperature to be too hot, affecting the user experience, and even posing a risk of burns. Figure 2a ,2b As shown in Figures 2 and 2c, the T-shaped airway 107 has a three-way channel component 108, and the three airway interfaces of the three-way channel component 108 are respectively connected to the atomizing chamber 10, the air outlet 22 and the airway end plug 231. The three directions of the T-shaped airway 107 are the air inlet channel 21, the air outlet 22 and the supplementary air inlet channel 23. The outside air is mixed with the aerosol with a higher temperature in the T-shaped airway, which can effectively reduce the aerosol temperature. At the same time, the outside air does not pass through the atomizing chamber 10, so it will not cause the atomizing chamber 10 to lose heat due to air cooling during suction, and thus can use energy more effectively. In addition, when the aerosol generating substrate 200 is loaded, the aerosol generating device 100 can still be cleaned if there are impurities such as detached objects, condensed droplets, sintered objects, etc. in the T-shaped horizontal supplementary air inlet channel 23 or the air outlet channel 22, so that the user can clean the aerosol generating device 100 at any time. The atomization chamber 10 and the air inlet channel 21 are located in the vertical direction of the T-shaped air channel. Cleaning from both lateral ends does not contact the heating body, and there is no risk of burns.

[0048] like Figure 1 As shown in FIG5 , the airway end plug 231 includes an air intake structure 232 and a positioning member 233. A positioning hole (not shown in the figure) is provided on the shell of the aerosol generating device 100, and the positioning member 233 of the airway end plug 231 is inserted into the positioning hole, so that the airway end plug 231 is fixed to the aerosol generating device 100. In one embodiment, the air intake structure 232 may be provided with a valve structure, and when the user does not inhale, the valve will not be opened, but the outside air can still enter the aerosol generating device 100 through the valve; when the user inhales, the valve will be opened, and the degree of opening of the valve increases with the increase of the user's suction strength. Therefore, the user can adjust the degree of opening of the valve by changing the suction strength to adjust the intake amount of the outside air. In another embodiment, the air intake structure 232 of the airway end plug 231 is provided with an elastic valve 234, and the elastic valve 234 and the air intake structure 232 have a boundary gap 235. The elastic valve 234 can be opened when subjected to suction, so that the outside air can enter the supplementary air intake channel 23 through the airway end plug 231; when the elastic valve 234 is in a closed state, the outside air can enter the supplementary air intake channel 23 through the boundary gap 235. Therefore, the air path 23 of the supplementary air intake channel has the ability to self-regulate the suction resistance, and the air intake amount of the outside air will increase accordingly with the increase of the user's suction force. Therefore, the user can adjust the opening degree of the elastic valve 234 by changing the suction force, thereby adjusting the air intake amount of the outside air. At the same time, even if the suction force of the user during suction is not enough to open the elastic valve 234, the outside air can still enter the supplementary air intake channel 23 through the boundary gap 235 of the elastic valve 234, thereby achieving the effect of cooling the aerosol.

[0049] Although the outside air can cool the aerosol when mixed with the aerosol, it will also dilute the concentration of the aerosol. Therefore, the cross-sectional area between the air inlet channel 21, the air outlet channel 22 and the supplementary air inlet channel 23 can be adjusted to adjust the air intake volume of the outside air, the ratio of the aerosol intake volume to the aerosol volume of the inlet aerosol, thereby adjusting the temperature and concentration of the inlet aerosol when the user inhales.

[0050] In one embodiment of the present invention, when the elastic valve 234 is in a closed state, the ventilation area of ​​the boundary gap 235 is not less than 0.5 mm. 2 When the ventilation area of ​​the boundary gap 235 is 0.5 mm 2 When the air inlet is 230, the outside air entering from the boundary gap 235 can at least reduce the temperature of the inlet mist to an inlet temperature suitable for the user. The larger the ventilation area, the more outside air enters, and the more effectively the temperature of the inlet mist is reduced.

[0051] In one embodiment of the present invention, the intake volume of the outside air is adjusted by adjusting the intake area of ​​the supplementary intake channel 23. When the elastic valve 234 is opened to the maximum position, the supplementary intake channel 23 has a first ventilation area. When the elastic valve 234 is in a closed state, the supplementary intake channel 23 has a second ventilation area. The second ventilation area is 0 to 0.5 times the first ventilation area. The user can adjust the intake volume of the outside air by changing the suction force. When the second ventilation area is 0.5 times the first ventilation area, it can basically meet the user's ability to adjust the intake volume of the outside air by changing the suction force, thereby adjusting the temperature and concentration range of the inlet aerosol. When the ratio of the second ventilation area to the first ventilation area is smaller, the range of the outside air intake volume adjusted by the user by changing the suction force is larger, so that the temperature and concentration range of the inlet aerosol can be adjusted in a larger range.

[0052] In another embodiment of the present invention, by adjusting the first area of ​​the supplementary air inlet channel 23 and the cross-sectional area of ​​the air inlet channel 21, the first ventilation area of ​​the supplementary air inlet channel 23 is within 0.67 times the cross-sectional area of ​​the air inlet channel 21, so that the air intake of the outside air is at most 0.67 times the air intake of the aerosol. When the air intake of the outside air is 0.67 times the air intake of the aerosol, the temperature and concentration of the inlet aerosol can basically meet the user's puffing experience; when the air intake of the aerosol is greater, the concentration of the inlet aerosol is higher, and the user's puffing experience can be improved.

[0053] In another embodiment of the present invention, the cross-sectional area of ​​the air outlet 22 and the air inlet 21 is adjusted so that the cross-sectional area of ​​the air outlet 22 is within 0.5 times the cross-sectional area of ​​the air inlet 21. When the aerosol volume of the inlet aerosol is 0.5 times the air intake volume of the aerosol, the temperature and concentration of the inlet aerosol can basically meet the user's puffing experience; when the air intake volume of the aerosol is greater, the concentration of the inlet aerosol is higher, and the user's puffing experience can be improved.

[0054] In another embodiment of the present invention, the cross-sectional areas of the air inlet channel 21, the air outlet channel 22 and the supplementary air inlet channel 23 are adjusted so that the sum of the first ventilation areas of the air outlet channel 22 and the supplementary air inlet channel 23 is within 1 times the cross-sectional area of ​​the air inlet channel 21. When the sum of the aerosol volume of the inlet aerosol and the air intake volume of the outside air is equal to the air intake volume of the aerosol, the temperature and concentration of the inlet aerosol can basically meet the user's puffing experience; when the air intake volume of the aerosol is greater, the concentration of the inlet aerosol is higher, and the user's puffing experience can be improved.

[0055] like Figure 1 Figure 5 to Figure 8 As shown, in another embodiment of the present invention, the aerosol generating device 100 further includes a pressing portion 40, a through hole 41 is provided on the top surface of the pressing portion 40, the through hole 41 is coaxially arranged with the atomizing chamber 10, and the aerosol generating matrix 200 is inserted into the atomizing chamber 10 through the through hole 41. A heat-insulating cavity 50 is formed between the atomizing portion and the pressing portion 40, and the heat-insulating cavity 50 can effectively isolate the pressing portion 40 from the atomizing portion, prevent the high temperature in the atomizing portion from being conducted to the pressing portion 40, and prevent the user from being burned by the high temperature when touching the pressing portion 40. The pressing part 40 is in a pop-up state in its natural state, and the volume of the insulating cavity 50 can be changed by pressing down the pressing part 40; when the pressing part 40 is in the first position, i.e., the pop-up state, the insulating cavity 50 has a first volume, and in the axial direction of the atomizing part, the top surface of the pressing part 40 and the atomizing part have a first distance; when the pressing part 40 is in the second position, i.e., the pressed state, the insulating cavity 50 has a second volume, and in the axial direction of the atomizing part, the top surface of the pressing part 40 and the atomizing part have a second distance.

[0056] The pressing part 40 can automatically return to its original position after being pressed down, and repeated pressing can change the volume of the heat-insulating cavity 50. In this process, the volume of the heat-insulating cavity 50 changes continuously, and the guided air enters the atomizing cavity 10 and then is discharged. During the repeated pressing process, the temperature of the heating component 11 and the atomizing cavity 10 can be effectively reduced by air flow, thereby fully dissipating heat, preventing the aerosol generating device 100 from being overheated after continuous use, which is beneficial to protecting electronic components and preventing users from being scalded.

[0057] When the pressing portion 40 is in the pop-up state, most of the aerosol generating substrate 200 inserted into the atomizing chamber 10 is submerged in the interior of the aerosol generating device 100. When the aerosol generating substrate 200 needs to be taken out, the pressing portion 40 can be pressed down to increase the length of the aerosol generating substrate 200 exposed outside the aerosol generating device 100, and the user can take out the aerosol generating substrate 200 through the exposed portion of the aerosol generating substrate 200. At the same time, because the aerosol generating device 100 itself has a suction nozzle 104, the user can inhale through the suction nozzle 104, and does not need to inhale through the filter section of the cigarette, so the aerosol generating substrate 200 can only retain the shorter filter section or remove the filter section. Therefore, the structure of the aerosol generating substrate 200 suitable for the aerosol generating device 100 can be simplified, and the aerosol generating substrate 200 can be shortened in length, thereby reducing production costs.

[0058] The pressing part 40 is provided with a stopper 44, and in the pop-up state, the stopper 44 makes the top surface of the pressing part 40 have a first distance from the atomizing part. The pressing part 40 does not contact the atomizing part and the heating component 11 during the pressing process, so that the high temperature of the atomizing part and the heating component 11 will not be transmitted to the pressing part 40, and the user will not be burned during the contact with the pressing part 40. At the same time, the pressing part 40 will not be damaged due to the high temperature, thereby improving the service life of the aerosol generating device 100.

[0059] The pressing part 40 includes a pressing plate 42, on which a guide 43 is provided, and the guide 43 is provided on the atomizing part, and the pressing part 40 can move axially along the atomizing part under the drive of the pressing plate 42. The aerosol generating device 100 is provided with a mounting part, in which a mounting cavity 60 is provided, and a mounting hole is provided in the mounting cavity 60, and the guide 43 extends into the mounting hole (not shown in the figure), so that the pressing part 40 is movably connected to the mounting cavity 60. An opening (not shown in the figure) is provided at the edge of the mounting hole, and a stopper 44 is located in the opening. When the pressing part 40 is in the first position, the stopper 44 abuts against the opening. The guide 43 can be a guide tube, a guide groove or a guide hook, etc.; the opening can be a notch, a notch, an arc-shaped opening, etc.; the stopper 44 can be a flat hook, a round hook or a strip hook. In other embodiments of the present invention, the connection mode of the mounting part and the pressing part can also be that a hook is provided in the mounting part, an opening is provided on the pressing part, and the pressing part and the mounting part are connected in the form of engagement.

[0060] The aerosol generating device 100 is further provided with a first reset member for resetting the pressing portion 40 from the second position to the first position. The automatic reset of the pressing portion 40 may be by elastic force, such as a spring, a spring, a torsion spring, etc., or by non-contact elastic force, such as the repulsive force between like-pole magnets.

[0061] Specifically, in the present embodiment, the first reset member is an elastic member, and the two ends of the elastic member are respectively in contact with the pressing portion 40 and the housing 101. In one embodiment, a protrusion 45 is provided on the pressing plate 42 of the pressing portion 40, one end of the elastic member is connected to the protrusion 45, and the other end is connected to the bottom of the mounting hole, and there is at least one group of elastic members between the pressing plate 42 and the bottom of the mounting hole. When the elastic member is a spring 70, the pressing portion 40 is in a pop-up state, and the spring 70 has a pre-compression of not less than 0.5 mm. When the elastic member is a torsion spring, a plastic support member can be installed outside the spring wire of the torsion spring to expand the contact area between the torsion spring and the two connecting ends, thereby enhancing the stability of the contact.

[0062] In another embodiment, the first reset member may also be a first magnet and a second magnet, the first magnet is disposed on the pressing portion 40, the second magnet is disposed on the housing 101, the first magnet and the second magnet have the same polarity, and a repulsive force is generated between the first magnet and the second magnet so that the pressing portion is reset from the second position to the first position. There is at least one set of the first magnet and the second magnet between the pressing portion 40 and the housing 101.

[0063] When the aerosol generating device 100 heats the aerosol generating matrix 200, part of the high-temperature airflow will flow to the pressing plate 42. Therefore, the pressing plate 42 is made of a high-temperature resistant material, such as PEEK, polyimide, PPSU, PC, ceramic, etc., which can prevent the pressing plate 42 from being damaged by the high-temperature airflow, thereby further improving the service life of the aerosol generating device 100.

[0064] At the same time, in this embodiment, the second volume of the insulation cavity 50 does not exceed 60% of the first volume. The user can generate sufficient gas flow by pressing the pressing portion 40, thereby fully dissipating the heat of the aerosol generating device 100, and at the same time, the aerosol generating device 100 can be made small enough for the user to carry.

[0065] Specifically, in this embodiment, the difference between the first distance and the second distance is not less than 4 mm, that is, when the pressing part 40 is pressed down, its downward stroke is not less than 4 mm, so that the volume change of the insulation cavity 50 can cause sufficient airflow to flow, thereby achieving the effect of heat dissipation.

[0066] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. An aerosol generating device, comprising a housing; an atomizing unit for atomizing an aerosol generating substrate, wherein the atomizing unit is provided with an atomizing chamber for storing the aerosol generating substrate, characterized in that: It also includes a pressing part, the top surface of the pressing part is provided with a through hole, the through hole is coaxially arranged with the atomizing chamber, a heat-insulating cavity is formed between the atomizing part and the pressing part, and the volume of the heat-insulating cavity can be changed by operating the pressing part; When in the first position, the heat-insulating cavity has a first volume, and in the axial direction of the atomizing portion, a first distance exists between the top surface of the pressing portion and the atomizing portion; In the second position, the heat-insulating cavity has a second volume, and in the axial direction of the atomizing portion, the top surface of the pressing portion and the atomizing portion have a second distance, wherein, When in the second position, the length of the aerosol-generating substrate extending from the pressing portion is greater than the length of the pressing portion extending from the pressing portion when in the first position, so as to remove the aerosol-generating substrate from the atomization chamber.

2. The aerosol generating device according to claim 1, characterized in that When the pressing portion is at the second position, the top surface of the pressing portion does not contact the atomizing portion.

3. The aerosol generating device according to claim 1, characterized in that The pressing portion is provided with a limiting member, and when in the first position, the limiting member allows the top surface of the pressing portion and the atomizing portion to have the first distance.

4. The aerosol generating device according to claim 3, characterized in that The pressing portion comprises a pressing plate, a guiding member is arranged on the pressing plate, and the guiding member cooperates with the atomizing portion to guide the pressing portion to move.

5. The aerosol generating device according to claim 3, characterized in that The shell body is provided with a mounting portion, and the pressing portion is mounted on the mounting portion.

6. The aerosol generating device according to claim 5, characterized in that The mounting portion comprises a mounting cavity, a mounting hole is arranged in the mounting cavity, an opening is arranged at the edge of the mounting hole, and the limiting member is located in the opening; when in the first position, the limiting member abuts against the opening.

7. An aerosol generating device according to any one of claims 1 to 6, characterized in that It also includes a first restoring member, which is used to restore the pressing portion from the second position to the first position.

8. The aerosol generating device according to claim 7, characterized in that The first restoring member is an elastic member, and two ends of the elastic member are respectively in contact with the pressing portion and the housing.

9. The aerosol generating device according to claim 7, characterized in that The first resetting member includes a first magnet and a second magnet, the first magnet is arranged on the pressing portion, and the second magnet is arranged on the housing, and a repulsive force is generated between the first magnet and the second magnet to reset the pressing portion from the second position to the first position.

10. The aerosol generating device according to claim 1, characterized in that The ratio of the second volume to the first volume of the heat-insulating cavity does not exceed 60%, and the difference between the first distance and the second distance is not less than 4 mm.

11. The aerosol generating device according to claim 1, characterized in that Also includes: An air inlet channel, the air inlet channel is connected to the atomization chamber; an air outlet channel, the air outlet channel is connected to the air inlet channel; and a supplementary air inlet channel, external air enters the aerosol generating device from the supplementary air inlet channel.

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