Heating device and aerosol generating device

Abstract

The embodiment of the invention provides a heating device and an aerosol generating device.The heating device comprises a fixing base and a heating assembly, the heating assembly comprises a heating piece and a supporting plate, the heating piece is used for generating heat under the power-on condition and heating and atomizing an aerosol generating substrate in the aerosol generating device, and the supporting plate is provided with a bearing face; one end of the supporting plate is connected with the fixing base, and the heating piece is stacked on the bearing face so that the supporting plate can support the heating piece. According to the heating device provided by the embodiment of the invention, the heating piece is stacked on the bearing surface, the supporting plate provides stress support for the heating piece, the structural stability of the heating piece is improved, the heating piece can stably heat and atomize the aerosol generating substrate, the thickness of the heating piece can be as thin as possible, and the heating piece is more stable. According to the technical scheme, the heating piece is not prone to being bent and broken while having the high heating rate and the large heating area, the service life of the heating piece is prolonged, and the user experience is better.

Description

Technical Field

[0001] The present application relates to the field of atomization technology, and in particular to a heating device and an aerosol generating device. Background Art

[0002] An aerosol generating device is an electronic transmission system that controls the working state and smoke output through a control circuit and an atomizing element for users to inhale. An aerosol generating device generally includes an atomizer, a heating sheet, and a power supply assembly. The atomizer contains an aerosol generating matrix, and the power supply assembly is used to power the heating sheet. When the heating sheet is powered on, the aerosol generating matrix is ​​converted into an aerosol that can be inhaled by the user.

[0003] In the related art, the heating sheet is easily bent or even broken during assembly or use. Summary of the invention

[0004] 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.

[0005] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0006] A heating device for an aerosol generating device, comprising:

[0007] Fixed seat;

[0008] 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;

[0009] 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.

[0010] In some embodiments, the heating sheet is connected to the fixing seat.

[0011] In some embodiments, the thickness of the support plate is greater than the thickness of the heating sheet, and the ratio of the thickness of the support plate to the heating sheet is 3 to 15 times.

[0012] 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.

[0013] In some embodiments, the fixing seat includes two fixing sub-seats, and the two fixing sub-seats are butt-jointed along the thickness direction of the heating sheet to clamp one end of the support plate therebetween.

[0014] In some implementation schemes, one end of the heating sheet extends into 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.

[0015] In some embodiments, 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.

[0016] 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 abuts against the protrusion.

[0017] 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 fixed seat along the second direction, and one end of the heating plate away from the fixed seat and one end of the support plate away from the fixed seat pass through the escape opening.

[0018] 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 opening to close the gap between the hole wall of the avoidance opening and the heating component.

[0019] In some embodiments, the support plate is made of zirconium oxide.

[0020] The present application provides an aerosol generating device, comprising:

[0021] An atomizer, wherein the atomizer has an atomizing chamber;

[0022] Power supply components;

[0023] 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 sheet extends into the atomization chamber to heat and atomize the aerosol generating matrix.

[0024] In some embodiments, it is characterized in that the atomizer 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 sheet is facing the position of the strip medium in the atomization chamber.

[0025] In the heating device provided in the embodiment of the present application, the heating sheet is stacked on the bearing surface, and the support plate provides force support for the heating sheet, thereby improving the structural stability of the heating sheet. The heating sheet can heat and atomize the aerosol generating matrix relatively stably, and the thickness of the heating sheet can be as thin as possible. While having a faster heating rate and a larger heating area, the heating sheet is not easy to bend or break, thereby improving the service life of the heating sheet. Moreover, when the heating sheet 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

[0026] Figure 1 This is a schematic structural diagram of a heating device according to an embodiment of the present application;

[0027] Figure 2 for Figure 1 An exploded schematic diagram of the structure shown;

[0028] Figure 3 for Figure 2 A schematic diagram of the structure of one of the stator seats is shown.

[0029] Description of Reference Numerals

[0030] 10- Heating device;

[0031] 111-fixing seat; 1111-fixing sub-seat; 1111a-opening slot; 1111b-bayonet; 1112-protrusion;

[0032] 112-heating plate; 113-supporting plate; 113a-bearing surface; 1131-plate body; 1132-limiting part;

[0033] 114-housing; 114a-avoidance; 115-sealing sleeve. DETAILED DESCRIPTION

[0034] In the description of the embodiments of the present application, it should be noted that the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0035] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, the meaning of "plurality" refers to two or more.

[0036] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] See also Figures 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 seat 111 and a heating component.

[0038] An embodiment of the present application provides an aerosol generating device, including an atomizer, a power supply assembly, and a heating device 10 of any embodiment of the present application.

[0039] The aerosol generating device is used to atomize the aerosol generating substrate to generate an aerosol for the user to use. The aerosol generating substrate includes but is not limited to medicines, nicotine-containing materials or nicotine-free materials, etc. The aerosol generating substrate can be a solid material with plants as the main raw material, such as tobacco, and added with corresponding aerosol formers and aroma materials.

[0040] The heating assembly includes a heating sheet 112 and a support plate 113. The heating sheet 112 is used to generate heat when powered on to heat and atomize the aerosol generating substrate in the aerosol generating device. Specifically, the atomizer has an atomizing chamber, and the aerosol generating substrate is provided in the atomizing chamber. The heating device 10 is electrically connected to the power supply assembly, and the heating sheet 112 extends into the atomizing chamber to heat and atomize the aerosol generating substrate.

[0041] 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 substrate.

[0042] The heating sheet 112 is thin, which is convenient for increasing the heating rate and shortening the waiting time for atomization. The heating sheet 112 has a large heating area, and the entire sheet surface can dissipate heat outward. The heat is easily dissipated, and there is no safety hazard caused by heat concentration, and the heating uniformity is good.

[0043] The support plate 113 has a bearing surface 113 a , one end of the support plate 113 is connected to the fixing seat 111 , and the heating sheet 112 is stacked on the bearing surface 113 a , so that the support plate 113 supports the heating sheet 112 .

[0044] 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.

[0045] In this embodiment, the support plate 113 provides force support for the heating sheet 112, which can reduce the thickness requirement of the heating sheet 112, so that the thickness of the heating sheet 112 can be as thin as possible and not easily bent or broken, thereby improving the heating rate of the heating sheet 112. When the heating sheet 112 extends into the atomization chamber, the force performance of the heating sheet 112 is good. The fixing seat 111 can provide certain support for the support plate 113, further improving the structural stability of the heating sheet 112.

[0046] It is understandable that the support plate 113 has a certain structural strength, is not easy to deform, and is not easy to bend or break during assembly and use. For example, when the heating sheet 112 extends into the atomizing chamber and cooperates with the strip medium or other atomizing medium with a certain strength, the support plate 113 can also provide a stable support for the heating sheet 112.

[0047] It should be noted that the heating sheet 112 is stacked on the carrying surface 113a, one side surface of the heating sheet 112 along the thickness direction is arranged on the carrying surface 113a, and the other side surface of the heating sheet 112 along the thickness direction can heat and atomize the aerosol generating matrix.

[0048] The heating sheet 112 and the bearing surface 113 a can be closely fitted together, so as to increase the tightness of the connection between the heating sheet 112 and the supporting plate 113 , so that the supporting plate 113 can provide support for the heating sheet 112 .

[0049] 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 as to facilitate the heating plate 112 to extend into the atomization chamber to complete the heating and atomization of the aerosol generation matrix.

[0050] The material of the heating sheet 112 is not limited, and can be metal, ceramic or other materials, etc., 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 sheet 112 is made of metal, such as gold or copper, which has high thermal conductivity.

[0051] In the heating device 10 provided in the embodiment of the present application, the heating sheet 112 is stacked on the bearing 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 relatively stably. The thickness of the heating sheet 112 can be as thin as possible. The heating sheet 112 can be less prone to bending, deformation, or even breaking while having a faster heating rate and a larger heating area, 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, the atomization consistency can be improved, and the user experience is better.

[0052] For some examples, see Figure 1 , the thickness H2 of the support plate 113 is greater than the thickness H1 of the heating sheet 112, that is, H2>H1, and the ratio of the two is 3 to 15 times, that is, H2=H1*(3 to 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.

[0053] The thickness of the support plate 113 is greater than that of the heating sheet 112, and the support plate 113 can provide sufficient force support for the heating sheet 112. The ratio distribution of the dimensions of the support plate 113 and the heating sheet 112 in the thickness direction can ensure that the support plate 113 has sufficient supporting capacity for the heating sheet 112 while the heating sheet 112 also has a high 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 sheet 112 along the thickness direction can also be relatively reasonable, so that the overall layout of the heating device 10 is relatively compact.

[0054] 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.

[0055] In this embodiment, the thickness of the heating plate 112 is appropriate, which can increase the heating rate and make 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.

[0056] 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.

[0057] In this embodiment, the thickness of the support plate 113 can provide strong support for the heating plate 112 while also making 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.

[0058] There is no limit to the arrangement of the heating sheet 112. In some embodiments, the heating sheet 112 is arranged outside the fixing seat 111, that is, the heating sheet 112 is not connected to the fixing seat 111. The heating sheet 112 is superimposed on the bearing surface 113a and connected to the support plate 113. The heating sheet 112 and the fixing seat 111 are indirectly connected together through the support plate 113. In this way, it is easy to take out the heating sheet 112. The heating sheet 112 can be checked and replaced by simply removing the heating sheet 112 from the bearing surface 113a.

[0059] In some other embodiments, please refer to Figure 1 , the heating sheet 112 is connected to the fixing seat 111, that is, the heating sheet 112 is directly connected to the fixing seat 111, that is, the heating sheet 112 is not only connected to the support plate 113, but also connected to the fixing seat 111. In this way, the stability of the cooperation between the heating sheet 112 and the bearing surface 113a can be increased, and the probability of the heating sheet 112 escaping from the bearing surface 113a can be reduced. In addition, the fixing seat 111 can also provide fixed support for the heating sheet 112, further improving the structural stability of the heating sheet 112.

[0060] The specific structure of the fixing base 111 is not limited.

[0061] For some examples, see Figure 2 The fixing seat 111 includes two fixing sub-seats 1111 , and the two fixing sub-seats 1111 are butted together along the thickness direction of the heating sheet 112 to clamp one end of the supporting plate 113 between the two.

[0062] Specifically, the two fixing seats 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 seat 111 and the support plate 113, and the support plate 113 will not fall out of the fixing seat 111, thereby improving the structural stability of the heating device 10.

[0063] It can be understood 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.

[0064] For some examples, see Figure 2 and Figure 3 At least one fixed sub-base 1111 is formed with an opening 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.

[0065] Specifically, the setting of the bayonet 1111b limits the movement of the support plate 113 along 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 limits the movement of the support plate 113 along 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 in the thickness direction to clamp the support plate 113, 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.

[0066] For some examples, see Figure 2 and Figure 3 The outer surface of one of the fixing sub-bases 1111 has a protrusion 1112 , and the side of the supporting plate 113 facing away from the heating plate 112 abuts against the protrusion 1112 .

[0067] 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.

[0068] For some examples, see Figure 1 and Figure 2 The heating device 10 includes a shell 114, one side of the shell 114 along the second direction is open, and the side wall on the other side has an avoidance opening 114a. The shell 114 is sleeved with the fixing seat 111 along the second direction, and one end of the heating plate 112 away from the fixing seat 111 and one end of the support plate 113 away from the fixing seat 111 pass through the avoidance opening 114a.

[0069] 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 outside 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.

[0070] For some examples, see Figure 1 and Figure 2 The heating device 10 includes a sealing sleeve 115, a portion of which is sandwiched 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.

[0071] 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 aerosol generated by heating and atomization of the heating plate 112 overflowing from the avoidance port 114a, increasing the air chamber stability of the aerosol generating device, and providing users with a better experience.

[0072] A portion of the sealing sleeve 115 is sandwiched between the outer shell 114 and the fixing seat 111 . Under the action of the outer shell 114 and the fixing seat 111 , a portion of the sealing sleeve 115 can pass through the avoidance opening 114 a to achieve its sealing effect, thereby increasing the structural reliability of the heating device 10 .

[0073] The material of the sealing sleeve 115 is not limited. For example, the sealing sleeve 115 can be made of silicone, rubber, felt, etc.

[0074] The material of the support plate 113 is not limited. In some embodiments, the material of the support plate 113 is zirconia, which has a low thermal conductivity, 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, and 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.

[0075] The following is combined with Figure 2 The assembly process of the heating device 10 according to the embodiment of the present application is briefly described.

[0076] 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 matched with the support plate 113 along the thickness direction, so as 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 one end of the support plate 113 away from the fixed seat 111 and one 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 one end of the support plate 113 away from the fixed seat 111 and one end of the heating plate 112 away from the fixed seat 111, and is sleeved 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.

[0077] The specific structure of the atomizer is not limited.

[0078] In some examples, the atomizer 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.

[0079] 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.

[0080] The strip-shaped medium is provided with an aerosol generating substrate, and the aerosol generating substrate is used to generate aerosol. For example, the strip-shaped medium can be formed by attaching the aerosol generating substrate to a base tape.

[0081] 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 base tape, a graphite base 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 on a metal sheet.

[0082] There is no limitation on the arrangement of the aerosol generating substrate on the base tape. For example, the aerosol generating substrate can be arranged on the surface of the base tape or penetrated into the interior of the base tape. Exemplarily, the aerosol generating substrate is spread on the base tape alternately in an intermittent manner.

[0083] The heating sheet 112 faces the portion where the strip medium is located in the atomizing chamber.

[0084] It is understandable that in some embodiments, the heating sheet 112 may be attached to the portion of the strip medium located in 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 the reliability of atomization. Of course, in other embodiments, the heating sheet 112 may not be attached to the portion of the strip medium located in the atomization chamber.

[0085] The uniform thickness of the strip medium can make the aerosol generating matrix on the surface or inside of the strip medium be heated evenly, thereby improving the consistency of atomization and reducing the probability of affecting the user experience due to insufficient heating and atomization of the aerosol generating matrix on the surface or inside of the strip medium or excessive heating to produce undesirable substances.

[0086] When the aerosol generating device is working, the power supply component supplies power to the heating sheet 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 sheet 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 sheet 112, so as to continue to generate aerosol for users.

[0087] The specific structure of the feeding assembly is not limited.

[0088] 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 to pass through the atomization chamber and wind around the driving wheel.

[0089] It should be noted that the third direction may be a clockwise direction or a counterclockwise direction of the circumference of the driving wheel.

[0090] When the atomizer is working, when the content of the aerosol-generating substrate of the heated strip medium in the atomizing chamber gradually decreases, the heated strip medium can be driven out of the atomizing chamber and wound onto the driving wheel by rotating the driving wheel, and the unheated strip medium on the driven wheel can be driven to move into the atomizing chamber.

[0091] It is understandable that the unheated strip medium is wound on the driven wheel, and the driven wheel can protect the strip medium, reduce the probability of the strip medium drying or oxidation, and extend the shelf life. When the atomizer is in working state, when the strip medium located in the atomization chamber is heated and atomized, the strip medium located outside the atomization chamber will not be heated. When the content of the aerosol-generating matrix of the strip medium located in the atomization chamber is low, the active wheel is rotated to drive the heated strip medium to pass through the atomization chamber and wind around the circumferential outer side of the active wheel, so that it will not scatter everywhere and pollute the atomizer. The driven wheel releases the strip medium, and the unheated strip medium moves into the atomization chamber for a new round of atomization to produce aerosol. In other words, during the atomization process, the strip medium will not be heated repeatedly, which reduces the probability that the components producing aerosols in the strip medium will affect the feel of use or deteriorate due to repeated heating, so that the user experience is better.

[0092] It is understandable that in some embodiments, an atomization medium detection mechanism can also be installed in the atomization 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 a preset angle in the second direction to drive the unheated strip medium to move into the atomization chamber.

[0093] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 representation of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0094] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heating device for an aerosol generating device, characterized in that: include: 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, characterized in that The heating sheet is connected to the fixing seat.

3. The heating device according to claim 1, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that 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, characterized in that: The support plate is made of zirconium oxide.

12. An aerosol generating device, characterized in that: include: 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, characterized in that: 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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