Heating device and aerosol generating device

Abstract

A heating device (10) and an aerosol generating device. The heating device (10) comprises a fixing base (111) and a heating assembly; the heating assembly comprises a heating piece (112) and a supporting plate (113), and the heating piece (112) is used for generating heat under a power-on condition and for heating and atomizing an aerosol generating matrix in an aerosol generating device; the supporting plate (113) has a bearing surface (113a); one end of the supporting plate (113) is connected to the fixing base (111); and the heating piece (112) is stacked on the bearing surface (113a), so that the supporting plate (113) supports the heating piece (112). Because the heating piece (112) of the heating device (10) is stacked on the bearing surface (113a), the supporting plate (113) provides support for the heating piece (112), thereby improving the structural stability of the heating piece (112), and enabling the heating piece (112) to stably heat and atomize the aerosol generating matrix; the thickness of the heating piece (112) can be as thin as possible, and the heating piece (112) cannot be easily bent and broken while having a faster heating rate and a large heating area, prolonging the service life of the heating piece (112), and achieving better user experience.

Description

Heating device and aerosol generating device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202310961129.8 and application date August 1, 2023, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the technical field of atomized aerosols, and in particular to a heating device and an aerosol generating device. Background Art

[0004] An aerosol-generating device (AGD) is an electronic delivery system that uses a control circuit and atomizing element to control its operating state and smoke output for user inhalation. An aerosol-generating device typically includes an atomizer, a heating element, and a power supply assembly. The atomizer contains an aerosol-generating matrix, and the power supply assembly powers the heating element. When powered, the heating element converts the aerosol-generating matrix into an aerosol for the user to inhale.

[0005] In the related art, the heating sheet is easily bent or even broken during assembly or use.

[0006] Summary of the Invention

[0007] In view of this, the embodiments of the present application hope to provide a heating device and an aerosol generating device, which reduce the probability of the heating sheet being bent or even broken during assembly or use.

[0008] The present application provides a heating device for an aerosol generating device, comprising:

[0009] Fixed seat;

[0010] A heating assembly, comprising a heating sheet and a support plate, wherein the heating sheet is used to generate heat when powered to heat and atomize the aerosol generating substrate in the aerosol generating device;

[0011] The support plate has a bearing surface, one end of the support plate is connected to the fixing seat, and the heating sheet is stacked on the bearing surface so that the support plate supports the heating sheet.

[0012] In some embodiments, the heating element is connected to the fixing seat.

[0013] In some embodiments, the thickness of the support plate is greater than the thickness of the heating plate, and the ratio of the thickness of the support plate to the thickness of the heating plate is 3 to 15 times.

[0014] In some embodiments, the thickness of the heating sheet is 0.1 mm to 0.3 mm; and / or the thickness of the support plate is 0.8 mm to 1.5 mm.

[0015] In some embodiments, the fixing seat includes two fixing sub-seaters, and the two fixing sub-seaters are butted together along the thickness direction of the heating plate to clamp one end of the support plate therebetween.

[0016] In some embodiments, one end of the heating sheet extends between two fixing sub-bases, and the two fixing sub-bases clamp one end of the support plate and one end of the heating sheet therebetween.

[0017] In some embodiments, at least one of the fixing sub-bases is formed with an opening slot and a bayonet, the bayonet passes through the slot wall of the opening slot, the width of the bayonet along the first direction is smaller than the width of the opening slot along the first direction, the support plate includes a plate body and a limiting portion, the limiting portion is arranged at one end of the plate body along the second direction and extends toward at least one side of the plate body along the first direction, the limiting portion is constrained in the opening slot, and a part of the plate body is passed through the bayonet, wherein the first direction, the second direction and the thickness direction of the heating plate are perpendicular to each other.

[0018] In some embodiments, an outer surface of one of the fixing sub-bases has a protrusion, and a side of the support plate facing away from the heating plate rests against the protrusion.

[0019] In some embodiments, the heating device includes a shell, which is open on one side along the second direction and has a sidewall having an escape opening on the other side. The shell is sleeved with the fixing seat along the second direction, and the end of the heating plate away from the fixing seat and the end of the support plate away from the fixing seat pass through the escape opening.

[0020] In some embodiments, the heating device includes a sealing sleeve, a portion of which is clamped between the outer shell and the fixing seat, and another portion of the sealing sleeve is passed through the avoidance port to close the gap between the hole wall of the avoidance port and the heating component.

[0021] In some embodiments, the support plate is made of zirconium oxide.

[0022] The present invention provides an aerosol generating device, comprising:

[0023] An atomizer, wherein the atomizer has an atomizing chamber;

[0024] Power supply components;

[0025] And the heating device described in any embodiment of the present application, the heating device is electrically connected to the power supply component, and the heating plate extends into the atomization chamber to heat and atomize the aerosol generating matrix.

[0026] In some embodiments, it is characterized in that the nebulizer includes a feeding assembly and a strip medium, the feeding assembly is used to drive the strip medium to move in the atomization chamber, and through grooves are formed on opposite sides of the atomization chamber for allowing the strip medium to movably pass through the atomization chamber, wherein the strip medium has an aerosol generating matrix, and the heating plate is facing the position of the strip medium in the atomization chamber.

[0027] The heating device provided in the embodiment of the present application has a heating plate stacked on a bearing surface, and the support plate provides force support for the heating plate, thereby improving the structural stability of the heating plate. The heating plate can heat and atomize the aerosol generating matrix more stably, and the thickness of the heating plate can be as thin as possible. While having a faster heating rate and a larger heating area, the heating plate is not easy to bend or break, thereby improving the service life of the heating plate. Moreover, when the heating plate heats and atomizes the aerosol generating matrix, the atomization waiting time is short, the heating uniformity is good, and the atomization consistency can be improved, so that the user experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1 is a schematic structural diagram of a heating device according to an embodiment of the present application;

[0029] FIG2 is an exploded schematic diagram of the structure shown in FIG1 ;

[0030] FIG3 is a schematic structural diagram of one of the stator bases shown in FIG2 . DETAILED DESCRIPTION

[0031] It should be noted that, unless there is a conflict, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed description in the specific implementation methods should be understood as an explanation of this application and should not be regarded as an improper restriction on this application.

[0032] In the description of the embodiments of the present application, the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0033] 1 to 3 , an embodiment of the present application provides a heating device 10 for an aerosol generating device. The heating device 10 includes a fixing base 111 and a heating assembly.

[0034] An embodiment of the present application provides an aerosol generating device, comprising an atomizer, a power supply assembly, and a heating device 10 of any embodiment of the present application.

[0035] The aerosol-generating device is used to atomize an aerosol-generating substrate to produce an aerosol for the user. The aerosol-generating substrate includes, but is not limited to, pharmaceuticals, nicotine-containing materials, or nicotine-free materials. The aerosol-generating substrate can be a solid material primarily made from plants, such as tobacco, to which a corresponding aerosol former and aroma material are added.

[0036] The heating assembly includes a heating element 112 and a support plate 113. The heating element 112 is used to generate heat when powered, heating and atomizing the aerosol-generating substrate in the aerosol-generating device. Specifically, the atomizer has an atomizing chamber containing the aerosol-generating substrate. The heating device 10 is electrically connected to the power supply assembly, and the heating element 112 extends into the atomizing chamber to heat and atomize the aerosol-generating substrate.

[0037] It can be understood that the heating sheet 112 refers to an element that is arranged in a sheet-like structure, is relatively thin, and can generate heat to heat and atomize the aerosol-generating matrix.

[0038] The thickness of the heating sheet 112 is relatively thin, which is convenient for increasing the heating rate and shortening the atomization waiting time. In addition, the heating area of ​​the heating sheet 112 is large, and the entire sheet surface can dissipate heat outward. The heat is easily dissipated, and there will be no safety hazards caused by heat concentration, and the heating uniformity is good.

[0039] The support plate 113 has a bearing surface 113 a . One end of the support plate 113 is connected to the fixing seat 111 . The heating plate 112 is stacked on the bearing surface 113 a so that the support plate 113 supports the heating plate 112 .

[0040] It is understandable that the smaller the thickness of the heating sheet, the faster the heating rate of the heating sheet, but the lower the structural strength of the heating sheet, the easier it is to deform, and the heating sheet is easily bent or broken during assembly or use. For example, when the heating sheet is extended into the atomization chamber and fits with the strip medium or other atomization medium with a certain strength, the heating sheet with low structural strength is easily bent, deformed or even broken under the action of the strip medium or other atomization medium with a certain strength, affecting the user experience.

[0041] In this embodiment, the support plate 113 provides force support for the heating plate 112, which can reduce the thickness requirement of the heating plate 112, making the thickness of the heating plate 112 as thin as possible and not easily bent or broken, thereby improving the heating rate of the heating plate 112. When the heating plate 112 is extended into the atomization chamber, the heating plate 112 has good force resistance. The fixing base 111 can provide certain support for the support plate 113, further improving the structural stability of the heating plate 112.

[0042] It is understood that the support plate 113 has a certain structural strength and is not easily deformed and is not easily bent or broken during assembly and use. For example, when the heating plate 112 is extended into the atomization chamber and cooperates with the strip medium or other atomization medium with a certain strength, the support plate 113 can also provide a stable support for the heating plate 112.

[0043] It should be noted that the heating sheet 112 is stacked on the supporting surface 113a, one side surface of the heating sheet 112 along the thickness direction is set on the supporting surface 113a, and the other side surface of the heating sheet 112 along the thickness direction can heat and atomize the aerosol generating matrix.

[0044] The heating sheet 112 and the supporting surface 113 a can be tightly fitted together, thereby increasing the tightness of the connection between the heating sheet 112 and the supporting plate 113 , making it easier for the supporting plate 113 to provide support for the heating sheet 112 .

[0045] It is understandable that one end of the support plate 113 is connected to the fixing seat 111, and the other end of the support plate 113 is exposed outside the fixing seat 111, so that it can be extended into the atomization chamber with the heating plate 112 to complete the heating and atomization of the aerosol generating matrix.

[0046] The material of the heating element 112 is not limited and can be metal, ceramic, or other materials, and the aerosol-generating matrix is ​​heated and atomized by heat convection, heat conduction, or other heating methods. For example, in some embodiments, the heating element 112 is made of metal, such as gold or copper, which has high thermal conductivity.

[0047] In the heating device 10 provided in the embodiment of the present application, the heating sheet 112 is stacked on the supporting surface 113a, and the support plate 113 provides force support for the heating sheet 112, thereby improving the structural stability of the heating sheet 112. The heating sheet 112 can heat and atomize the aerosol generating matrix more stably. The thickness of the heating sheet 112 can be as thin as possible. While having a faster heating rate and a larger heating area, the heating sheet 112 is not prone to bending, deformation, or even breaking, thereby improving the service life of the heating sheet 112. Moreover, when the heating sheet 112 heats and atomizes the aerosol generating matrix, the atomization waiting time is short, the heating uniformity is good, and the atomization consistency can be improved, so that the user experience is better.

[0048] In some embodiments, referring to FIG. 1 , the thickness H2 of the support plate 113 is greater than the thickness H1 of the heating sheet 112, i.e., H2>H1, and the ratio of the two is 3 to 15 times, i.e., H2=H1*(3-15). For example, 3 times, 3.5 times, 4 times, 5 times, 5.6 times, 6 times, 7 times, 8 times, 9 times, 10 times, 11 times, 12 times, 13 times, 14 times, 15 times, etc.

[0049] The thickness of the support plate 113 is greater than that of the heating plate 112. The support plate 113 can provide sufficient force support for the heating plate 112. The ratio distribution of the dimensions of the support plate 113 and the heating plate 112 in the thickness direction can ensure that the support plate 113 has sufficient supporting capacity for the heating plate 112 while the heating plate 112 also has a higher heating rate to improve the atomization efficiency. At the same time, the overall size of the heating assembly formed by the support plate 113 and the heating plate 112 in the thickness direction can also be relatively reasonable, making the overall layout of the heating device 10 relatively compact.

[0050] In some embodiments, the thickness of the heating sheet 112 is 0.1 mm (millimeter) to 0.3 mm, for example, 0.1 mm, 0.12 mm, 0.15 mm, 0.18 mm, 0.2 mm, 0.21 mm, 0.24 mm, 0.27 mm, 0.3 mm, etc.

[0051] In this embodiment, the thickness of the heating plate 112 is appropriate, which can increase the heating rate while making the thickness of the corresponding support plate 113 more reasonable, thereby increasing the working reliability of the heating device 10 and reducing the manufacturing difficulty of the heating plate 112.

[0052] In some embodiments, the thickness of the support plate 113 is 0.8 mm to 1.5 mm, for example, 0.8 mm, 0.9 mm, 0.96 mm, 1 mm, 1.05 mm, 1.1 mm, 1.2 mm, 1.23 mm, 1.3 mm, 1.4 mm, 1.5 mm, etc.

[0053] In this embodiment, the thickness of the support plate 113 not only facilitates strong support for the heating plate 112, but also makes the thickness of the corresponding heating plate 112 more reasonable, thereby increasing the heating rate and making the structural arrangement of the heating device 10 more compact.

[0054] There is no limit to the setting method of the heating plate 112. In some embodiments, the heating plate 112 is set outside the fixing seat 111, that is, the heating plate 112 is not connected to the fixing seat 111. The heating plate 112 is superimposed on the bearing surface 113a and connected to the support plate 113. The heating plate 112 and the fixing seat 111 are indirectly connected together through the support plate 113. In this way, it is convenient to remove the heating plate 112. The heating plate 112 can be checked and replaced by simply removing the heating plate 112 from the bearing surface 113a.

[0055] In other embodiments, referring to FIG1 , the heating sheet 112 is connected to the fixing base 111, that is, the heating sheet 112 is directly connected to the fixing base 111, that is, the heating sheet 112 is connected not only to the support plate 113 but also to the fixing base 111. This can increase the stability of the cooperation between the heating sheet 112 and the bearing surface 113a, reduce the probability of the heating sheet 112 falling off the bearing surface 113a, and the fixing base 111 can also provide fixed support for the heating sheet 112, further improving the structural stability of the heating sheet 112.

[0056] The specific structure of the fixing base 111 is not limited.

[0057] In some examples, referring to FIG. 2 , the fixing base 111 includes two fixing sub-bases 1111 , which are butted together along the thickness direction of the heating plate 112 to clamp one end of the support plate 113 therebetween.

[0058] Specifically, the two fixing sub-bases 1111 move along both sides of the thickness direction of the heating plate 112 to clamp the support plate 113 to improve the connection stability between the fixing base 111 and the support plate 113, and the support plate 113 will not fall out of the fixing base 111, thereby improving the structural stability of the heating device 10.

[0059] It is understandable that the two fixing sub-bases 1111 are butted together along the thickness direction of the heating plate 112 , and the butting manner is not limited, for example, it can be a snap fit or a screw connection.

[0060] In some embodiments, please refer to Figures 2 and 3, at least one fixed sub-base 1111 is formed with an open groove 1111a and a bayonet 1111b, the bayonet 1111b passes through the groove wall of the opening groove 1111a, and the width W2 of the bayonet 1111b along the first direction is smaller than the width W1 of the opening groove 1111a along the first direction, that is, W2<W1, the support plate 113 includes a plate body 1131 and a limiting portion 1132, the limiting portion 1132 is arranged at one end of the plate body 1131 along the second direction and extends toward at least one side of the plate body 1131 along the first direction, the limiting portion 1132 is constrained in the opening groove 1111a, and a part of the plate body 1131 is passed through the bayonet 1111b, wherein the first direction, the second direction and the thickness direction of the heating plate 112 are perpendicular to each other.

[0061] Specifically, the setting of the bayonet 1111b limits the movement of the support plate 113 in the first direction, and the support plate 113 cannot escape from the fixed sub-base 1111 along the first direction. The cooperation between the limiting portion 1132 and the opening groove 1111a and the size setting of the opening groove 1111a and the bayonet 1111b limit the movement of the support plate 113 in the second direction, and the support plate 113 cannot escape from the fixed sub-base 1111 along the second direction. When the two fixed sub-bases 1111 are docked and clamped to clamp the support plate 113 in the thickness direction, the support plate 113 cannot escape from the fixed sub-base 111 in the thickness direction. In this way, the stability of the connection between the support plate 113 and the fixed base 111 is increased, and the probability of the heating plate 112 shaking with the support plate 113 due to the unstable connection between the support plate 113 and the fixed base 111 is reduced, thereby improving the overall stability of the heating device 10.

[0062] In some embodiments, referring to FIG. 2 and FIG. 3 , an outer surface of a fixing sub-base 1111 has a protrusion 1112 , and a side of the support plate 113 facing away from the heating plate 112 abuts against the protrusion 1112 .

[0063] The setting of the protrusion 1112 can further provide force support for the support plate 113, improve the structural stability of the support plate 113, reduce the probability of shaking at the end of the support plate 113 away from the fixing seat 111, and thus improve the stability of the heating plate 112.

[0064] In some embodiments, referring to Figures 1 and 2, the heating device 10 includes a shell 114, which is open on one side along the second direction and has a sidewall with an escape opening 114a on the other side. The shell 114 is sleeved with the fixing seat 111 along the second direction, and the end of the heating plate 112 away from the fixing seat 111 and the end of the support plate 113 away from the fixing seat 111 pass through the escape opening 114a.

[0065] The provision of the outer shell 114 can facilitate the assembly of the heating device 10 and the atomizing chamber. The outer shell 114 is sleeved on the outside of the fixing seat 111, and can protect the connection between the heating plate 112, the support plate 113 and the fixing seat 111. When the heating device 10 is assembled with the atomizing chamber, the outer shell 114 and the end of the heating plate 112 away from the fixing seat 111 and the end of the support plate 113 away from the fixing seat 111 can be matched with the atomizing chamber, and the matching of the heating device 10 and the atomizing chamber is simpler and more convenient.

[0066] In some embodiments, referring to Figures 1 and 2, the heating device 10 includes a sealing sleeve 115, a portion of which is clamped between the outer shell 114 and the fixing seat 111, and another portion of the sealing sleeve 115 is passed through the avoidance opening 114a to close the gap between the side wall of the avoidance opening 114a and the heating component.

[0067] The sealing sleeve 115 can play a sealing role, making the joint between the heating device 10 and the atomization chamber less likely to leak, improving the sealing of the joint between the two, reducing the probability of the aerosol generated by the heating plate 112 heating and atomizing overflowing from the avoidance port 114a, increasing the stability of the air chamber of the aerosol generating device, and providing users with a better experience.

[0068] A portion of the sealing sleeve 115 is sandwiched between the outer shell 114 and the fixing seat 111 . The sealing sleeve 115 can partially pass through the avoidance opening 114 a under the action of the outer shell 114 and the fixing seat 111 to achieve its sealing function, thereby increasing the structural reliability of the heating device 10 .

[0069] The material of the sealing sleeve 115 is not limited. For example, the sealing sleeve 115 can be made of silicone, rubber, felt, etc.

[0070] The material of the support plate 113 is not limited. In some embodiments, the support plate 113 is made of zirconia, which has a low thermal conductivity coefficient, so that the support plate 113 absorbs as little heat as possible from the heating plate 112, ensuring the heating rate of the heating plate 112. The support plate 113 also has high temperature resistance, so that when the heating plate 112 heats and atomizes the aerosol generating matrix, the support plate 113 will not be damaged at the atomization temperature and the structure is stable.

[0071] The following briefly describes the assembly process of the heating device 10 according to the embodiment of the present application with reference to FIG2 .

[0072] During assembly, first mate the support plate 113 with one of the fixed sub-bases 1111, insert the limiting portion 1132 into the opening groove 1111a, and insert a portion of the plate body 1131 into the bayonet 1111b. Then, stack the heating sheet 112 on the bearing surface 113a, and then dock the other fixed sub-base 1111 with the fixed sub-base 1111 that is mated with the support plate 113 along the thickness direction to clamp the support plate 113 and the heating sheet 112 between the two fixed sub-bases 1111. The sealing sleeve 115 is passed through the end of the support plate 113 away from the fixed seat 111 and the end of the heating plate 112 away from the fixed seat 111, and is fitted with the fixed seat 111. Finally, the outer shell 114 is passed through the end of the support plate 113 away from the fixed seat 111 and the end of the heating plate 112 away from the fixed seat 111, and is fitted with the fixed seat 111. The sealing sleeve 115 is deformed under the clamping of the outer shell 114 and the fixed seat 111, and a part of it passes through the avoidance opening 114a, sealing the gap between the side wall of the avoidance opening 114a and the heating component. In this way, the heating device 10 is assembled.

[0073] The specific structure of the atomizer is not limited.

[0074] In some examples, the nebulizer includes a feeding assembly and a strip medium, the feeding assembly is used to drive the strip medium to move in the atomization chamber, and through grooves are formed on opposite sides of the atomization chamber for allowing the strip medium to movably pass through the atomization chamber, wherein the strip medium has an aerosol generating matrix.

[0075] Specifically, the strip medium is a flexible long strip structure with a certain width and thickness, but the length can be extended and bent according to actual conditions.

[0076] The strip-shaped medium is provided with an aerosol generating substrate, which is used to generate aerosol. For example, the strip-shaped medium can be formed by attaching the aerosol generating substrate to a base tape.

[0077] The base tape can be any tape that can withstand the atomization temperature, has a certain degree of flexibility, and can be unwound and rewound, such as a paper tape, a polymer tape, a metal tape, a graphite tape, etc. The base tape can also be a metal mesh, which can be formed by weaving metal wires or by providing a plurality of through holes in a metal sheet.

[0078] There is no limitation on the arrangement of the aerosol generating matrix on the base tape. For example, the aerosol generating matrix can be arranged on the surface of the base tape or penetrated into the interior of the base tape. Exemplarily, the aerosol generating matrix is ​​spread on the base tape in an intermittent and alternating manner.

[0079] The heating plate 112 faces the portion of the strip medium located in the atomizing chamber.

[0080] It is understood that in some embodiments, the heating sheet 112 can be attached to the portion of the strip medium located within the atomization chamber to achieve sufficient heating and atomization of the aerosol-generating matrix on the surface or inside of the strip medium, thereby improving atomization reliability. Of course, in other embodiments, the heating sheet 112 may not be attached to the portion of the strip medium located within the atomization chamber.

[0081] The uniform thickness of the strip medium allows the aerosol-generating matrix on the surface or inside of the strip medium to be heated evenly, thereby improving atomization consistency and reducing the chance of the user's experience being affected by insufficient heating and atomization of the aerosol-generating matrix on the surface or inside of the strip medium or excessive heating producing undesirable substances.

[0082] When the aerosol generating device is working, the power supply component supplies power to the heating plate 112, and the aerosol generating matrix on the surface or inside of the strip medium in the atomization chamber can be atomized and generate aerosol under the action of the heating plate 112. When the content of the aerosol generating matrix on the surface or inside of the strip medium in the atomization chamber gradually decreases, the feeding component drives the strip medium to move, so that the heated strip medium in the atomization chamber moves out of the atomization chamber, and the unheated strip medium moves into the atomization chamber for heating and atomization by the heating plate 112, so that it can continue to generate aerosol for users to use.

[0083] The specific structure of the feeding assembly is not limited.

[0084] In some examples, the feeding assembly includes a driving wheel and a driven wheel for winding the strip medium, that is, the driving wheel and the driven wheel are both used for winding the strip medium, and the driving wheel and the driven wheel are arranged at both ends of the strip medium along the length direction. Specifically, one end of the strip medium is wound around the circumferential outer side of the driving wheel, and the other end of the strip medium is wound around the circumferential outer side of the driven wheel. The driving wheel rotates along a third direction to drive the strip medium wound around the driven wheel through the atomization chamber and wound onto the driving wheel.

[0085] It should be noted that the third direction may be a clockwise direction or a counterclockwise direction of the circumference of the driving wheel.

[0086] When the atomizer is working, when the content of the aerosol-generating substrate in the heated strip medium located in the atomization chamber gradually decreases, the driving wheel can be rotated to drive the heated strip medium out of the atomization chamber and wind it onto the driving wheel, and drive the unheated strip medium located on the driven wheel to move into the atomization chamber.

[0087] It is understandable that the unheated strip of medium is wound around the driven wheel, which can protect the strip of medium, reduce the chance of the strip of medium drying out or oxidizing, and extend the shelf life. When the atomizer is in working condition, when the strip of medium located in the atomization chamber is heated and atomized, the strip of medium located outside the atomization chamber will not be heated. When the content of the aerosol-generating matrix of the strip of medium located in the atomization chamber is low, the driving wheel is rotated to drive the heated strip of medium through the atomization chamber and wound around the circumferential outside of the driving wheel. It will not scatter everywhere and contaminate the atomizer. The driven wheel releases the strip of medium, and the unheated strip of medium moves into the atomization chamber for a new round of atomization to produce aerosol. In other words, during the atomization process, the strip of medium will not be heated repeatedly, reducing the chance that the components that produce aerosol in the strip of medium will affect the feel of use or deteriorate due to repeated heating, thus providing a better user experience.

[0088] It is understandable that in some embodiments, an atomizing medium detection mechanism can also be installed in the atomizing chamber. When it is detected that the content of the aerosol-generating matrix on the surface or inside of the strip medium is gradually decreasing, the driving wheel can automatically rotate along the third direction by a preset angle, driving the unheated strip medium to move into the atomizing chamber.

[0089] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine different embodiments or examples described in the present application and features of different embodiments or examples without contradiction.

[0090] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A heating device for an aerosol generating device, comprising: Fixed seat; A heating assembly, comprising a heating sheet and a supporting plate, wherein the heating sheet is used to generate heat when powered on to heat and atomize an aerosol generating substrate in the aerosol generating device; The support plate has a bearing surface, one end of the support plate is connected to the fixing seat, and the heating sheet is stacked on the bearing surface so that the support plate supports the heating sheet.

2. The heating device according to claim 1, wherein: The heating sheet is connected to the fixing seat.

3. The heating device according to claim 1, wherein: The thickness of the support plate is greater than the thickness of the heating sheet, and the ratio of the two is 3 to 15 times.

4. The heating device according to claim 1, wherein: The thickness of the heating sheet is 0.1 mm to 0.3 mm; and / or the thickness of the support plate is 0.8 mm to 1.5 mm.

5. The heating device according to claim 1, wherein: The fixing seat comprises two fixing sub-seats, and the two fixing sub-seats are butted together along the thickness direction of the heating sheet so as to clamp one end of the supporting plate therebetween.

6. The heating device according to claim 5, wherein: One end of the heating sheet extends into between the two fixing sub-bases, and the two fixing sub-bases clamp one end of the support plate and one end of the heating sheet therebetween.

7. The heating device according to claim 5, wherein: At least one of the fixing sub-seateds is formed with an opening groove and a bayonet, the bayonet passes through the groove wall of the opening groove, the width of the bayonet along the first direction is smaller than the width of the opening groove along the first direction, the support plate includes a plate body and a limiting portion, the limiting portion is arranged at one end of the plate body along the second direction and extends toward at least one side of the plate body along the first direction, the limiting portion is constrained in the opening groove, and a part of the plate body is passed through the bayonet, wherein the first direction, the second direction and the thickness direction of the heating plate are perpendicular to each other.

8. The heating device according to claim 5, wherein: The outer surface of one of the fixing sub-bases has a protrusion, and the side of the supporting plate facing away from the heating plate abuts against the protrusion.

9. The heating device according to claim 1, wherein: The heating device includes a shell, which is open on one side along the second direction and has a sidewall with an escape opening on the other side. The shell is sleeved with the fixing seat along the second direction, and one end of the heating plate away from the fixing seat and one end of the support plate away from the fixing seat pass through the escape opening.

10. The heating device according to claim 9, wherein: The heating device comprises a sealing sleeve, a part of which is sandwiched between the shell and the fixing seat, and another part of which is passed through the avoidance opening to close the gap between the side wall of the avoidance opening and the heating component.

11. The heating device according to claim 1, wherein: The support plate is made of zirconium oxide.

12. An aerosol generating device comprising: An atomizer, wherein the atomizer has an atomizing chamber; Power supply components; And the heating device according to any one of claims 1 to 11, wherein the heating device is electrically connected to the power supply assembly, and the heating sheet extends into the atomization chamber to heat and atomize the aerosol generating matrix.

13. The aerosol generating device according to claim 12, wherein: The atomizer includes a feeding assembly and a strip medium, wherein the feeding assembly is used to drive the strip medium to move in the atomization chamber, and through grooves are formed on opposite sides of the atomization chamber for allowing the strip medium to movably pass through the atomization chamber, wherein the strip medium has an aerosol generating matrix, and the heating sheet faces the portion of the strip medium located in the atomization chamber.

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