Heating device and atomization equipment

Abstract

The utility model relates to the technical field of smoke atomization, in particular to a heating device and atomization equipment, the heating device comprises a heating pipe and a heating body, the circumferential side wall of the heating pipe is provided with a first heating area, a second heating area and a third heating area which are sequentially distributed in the axial direction, the heating body comprises a first heating body, a second heating body and a third heating body which are mutually independent. Due to the fact that the circumferential side wall of the heating pipe is divided into the first heating area, the second heating area and the third heating area which are sequentially distributed in the axial direction, and the first heating body, the second heating body and the third heating body which are mutually independent correspondingly are arranged in the first heating area, the second heating area and the third heating area respectively, the heating pipe can achieve partitioned heating, and the heating efficiency is improved. The different axial parts of the atomization substrate are sequentially and circumferentially heated, the heating area can be reduced, the problem of scalding the mouth is not prone to being caused, the suction balance can be improved through partition heating, and a certain part of the atomization substrate is prevented from being continuously and unevenly heated.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke atomization, and particularly relates to a heating device and an atomization device. Background Art

[0002] The heat-not-burn smoking device is used by inserting a cigarette stick. The heat-not-burn smoking device can heat the tobacco section of the cigarette stick in a circumferential heating manner.

[0003] The tobacco section of the cigarette stick is relatively long and contains a lot of internal moisture. The current heat-not-burn smoking device heats the entire tobacco section of the cigarette stick, with a relatively large heating area, which easily causes the problem of scalding the mouth and also leads to poor suction balance. Summary of the Utility Model

[0004] The utility model provides an atomization device and an electronic atomization device, which are used to solve the problems of a relatively large heating area, easy scalding of the mouth and poor suction balance.

[0005] In one embodiment, a heating device is provided, including:

[0006] A heating tube, the heating tube has a heating cavity for heating an atomization matrix, the heating tube has opposite first and second ends, the first end has an insertion port for inserting and removing the atomization matrix, and the second end has an air inlet or air holes; the circumferential side wall of the heating tube has a first heating area, a second heating area and a third heating area distributed in sequence along the axial direction, the first heating area is close to the first end, and the third heating area is close to the second end; and

[0007] A heating body, the heating body is arranged on the outer side surface and / or the inner side surface of the circumferential side wall of the heating tube, and the heating body includes independent first, second and third heating bodies; the first heating body is located in the first heating area and the second heating area, and the area of the first heating body in the first heating area is larger than the area in the second heating area; the second heating body is located in the second heating area, and the third heating body is located in the third heating area.

[0008] In one embodiment, the second heating area includes a first sub-heating area and a second sub-heating area distributed along the axial direction, the first sub-heating area is close to the first heating area, and the second sub-heating area is close to the third heating area; the first heating body is located in the first heating area and the first sub-heating area, and the second heating body is located in the first sub-heating area and the second sub-heating area.

[0009] In one embodiment, the area of the first heating body in the first sub-heating area is smaller than the area of the second heating body.

[0010] In one embodiment, the first heating element is also distributed in the second sub-heating area, and the areas of the first heating element located in the first heating area, the first sub-heating area, and the second sub-heating area decrease in sequence.

[0011] In one embodiment, the second heating element is also distributed in the first heating area, and the areas of the second heating element located in the first heating area, the first sub-heating area, and the second sub-heating area increase in sequence.

[0012] In one embodiment, when the first heating area and the second heating area are unfolded in a plane, they form a rectangular surface, and the rectangular surface is divided into a first triangular area and a second triangular area along a diagonal line. The right angle of the first triangular area is closer to the first end than the right angle of the second triangular area; the first heating element is located in the first triangular area, and the second heating element is located in the second triangular area.

[0013] In one embodiment, there is also a spacing area between the second heating area and the third heating area.

[0014] In one embodiment, the first heating element, the second heating element, and the third heating element are strip-shaped sheet structures with equal widths.

[0015] In one embodiment, an atomization device is provided, which includes a circuit board, a battery, and a heating device as described above. The circuit board is electrically connected to the battery, the first heating element, the second heating element, and the third heating element respectively.

[0016] In one embodiment, the circuit board is used to control the first heating element, the second heating element, and the third heating element to heat separately or in combination.

[0017] According to the heating device and the atomization device of the above embodiments, since the circumferential side wall of the heating tube is divided into a first heating area, a second heating area, and a third heating area that are sequentially distributed along the axial direction, and corresponding independent first heating element, second heating element, and third heating element are respectively provided in the first heating area, the second heating area, and the third heating area, the heating tube can achieve zone heating, and the different axial parts of the atomization matrix are circumferentially heated successively, which can reduce the heating area and is not likely to cause the problem of scalding the mouth. Zone heating is also beneficial to improving the suction balance and avoiding continuous uneven heating of a certain part of the atomization matrix. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a heating device in one embodiment;

[0019] Figure 2 It is a schematic structural diagram of the heating device unfolded in a plane in one embodiment;

[0020] Figure 3 Schematic diagram of the structure of the heating device unfolded into a plane in one embodiment;

[0021] Figure 4 Schematic diagram of the structure of the heating device unfolded into a plane in one embodiment;

[0022] Figure 5 Schematic diagram of the structure of the heating device unfolded into a plane in one embodiment;

[0023] Figure 6 Schematic diagram of the structure of the heating device in one embodiment;

[0024] Figure 7 Schematic diagram of the structure of the atomizing device in one embodiment;

[0025] Figure 8 Schematic diagram of the structure of the atomizing device in one embodiment;

[0026] The reference numerals are as follows:

[0027] 1 - heating tube, 11 - heating cavity, 12 - first heating zone, 13 - second heating zone, 131 - first sub - heating zone, 132 - second sub - heating zone, 14 - third heating zone, 15 - spacer zone, a - first triangular zone, b - second triangular zone, c - first trapezoidal zone, d - second trapezoidal zone;

[0028] 2 - heating body, 21 - first heating body, 22 - second heating body, 23 - third heating body;

[0029] 3 - atomizing matrix;

[0030] 4 - mounting base, 41 - upper mounting base, 42 - lower mounting base, 43 - sleeve;

[0031] 5 - circuit board;

[0032] 6 - battery;

[0033] 7 - atomizing shell. Detailed implementation manners

[0034] The present utility model will be further described in detail below in conjunction with the accompanying drawings through specific embodiments. Similar elements in different embodiments are labeled with related similar element numbers. In the following embodiments, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification, which is to avoid overwhelming the core part of the present application with excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0035] In addition, the features, operations, or characteristics described in the specification can be combined in any appropriate manner to form various embodiments. At the same time, the steps or actions in the method description can also be reordered or adjusted in a manner obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for clearly describing a certain embodiment and do not mean that they are the necessary sequences, unless it is stated that a certain sequence must be followed.

[0036] The serial numbers assigned to the components in this article, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, both include direct and indirect connection (coupling).

[0037] In one embodiment, a heating device is provided. This heating device is used to be installed in an atomization device and is used to heat an atomization matrix, and the atomization matrix can be the tobacco section of a cigarette. This heating device is mainly used to circumferentially heat the atomization matrix. The heating device is provided with independent heating elements located in different axial regions, so that the heating device can heat different axial parts of the atomization matrix successively. For example, it preferentially heats one end of the tobacco section of the atomization matrix close to the suction section, then heats the middle of the tobacco section, and finally heats the end of the tobacco section far from the suction section. By heating successively in this way, the tobacco section can be baked more evenly, and the suction can be more balanced. It can also avoid heating the entire tobacco section simultaneously, resulting in a large amount of heat and a scalding problem.

[0038] Please refer to Figure 1 and Figure 2 In this embodiment, the heating device mainly includes a heating tube 1 and a heating element 2.

[0039] The heating tube 1 can be a metal tube with good heat conduction performance. For example, the heating tube 1 is a copper tube. The heating tube 1 has a heating cavity 11 inside. The heating cavity 11 is used to insert and accommodate the tobacco segment of the atomization matrix 3. The axial length of the heating cavity 11 can be equal to or close to the axial length of the tobacco segment of the atomization matrix 3, so that the heating cavity 11 can heat all the axial segments of the tobacco segment of the atomization matrix 3.

[0040] The heating tube 1 has opposite first and second ends. The first end of the heating tube 1 has an insertion port, and the insertion port can be used to insert and remove the atomization matrix 3. The second end of the heating tube 1 can be an open or closed structure. For example, the second end of the heating tube 1 is an open structure. The second end of the heating tube 1 has an air inlet, and air can enter the heating cavity 11 through the air inlet. The diameter of the air inlet can be greater than, equal to, or less than the insertion port. The second end of the heating tube 1 can also be a closed structure. The closed structure at the second end of the heating tube 1 can be used to limit the insertion depth of the atomization matrix 3 and play a role in limiting and fixing the atomization matrix 3. One or more air holes can be provided on the closed structure at the second end of the heating tube 1, and air enters the heating cavity 11 through the air holes.

[0041] The circumferential side wall of the heating tube 1 has a first heating zone 12, a second heating zone 13, and a third heating zone 14 that are sequentially distributed along the axial direction. The first heating zone 12 is close to the first end of the heating tube 1, the second heating zone 13 is located in the middle position of the heating tube 1, and the third heating zone 14 is close to the second end of the heating tube 1. When the circumferential side wall of the heating tube 1 is unfolded into a plane state, the first heating zone 12, the second heating zone 13, and the third heating zone 14 are all rectangular panels.

[0042] It should be noted that the division of the first heating zone 12, the second heating zone 13, and the third heating zone 14 of the heating tube 1 is for the convenience of describing different heating bodies. In the actual product, it is impossible to directly observe and distinguish the first heating zone 12, the second heating zone 13, and the third heating zone 14 of the heating tube 1, that is, the dotted lines in the figure are schematic lines. Of course, for the installation and attachment of the heating body 2, the circumferential side wall of the heating tube 1 can also be marked by scribing, spraying different colors, etc. to indicate the first heating zone 12, the second heating zone 13, and the third heating zone 14.

[0043] The heating body 2 can be attached to the outer side surface of the circumferential side wall of the heating tube 1 by welding, inlaying, etc. The heating body 2 can also be attached to the inner side surface of the circumferential side wall of the heating tube 1 or attached to the outer side surface and the inner side surface at the same time. When the heating body 2 is attached to the outer side surface of the circumferential side wall of the heating tube 1, it is more convenient for production and manufacturing. At the same time, it can also prevent the heating body 2 from directly transferring the heat source to the atomization matrix 3. The heating body 2 transfers heat to the atomization matrix 3 through the heating tube 1, and the heating tube 1 can play a role in heat equalization, which can improve the uniformity of circumferential heating of the atomization matrix 3.

[0044] The heating body 2 includes independent first heating body 21, second heating body 22 and third heating body 23. The first heating body 21, second heating body 22 and third heating body 23 are resistance heating structures. After the first heating body 21, second heating body 22 and third heating body 23 are powered on, electrical energy can be converted into heat energy. The fact that the first heating body 21, second heating body 22 and third heating body 23 are independent of each other means that the first heating body 21, second heating body 22 and third heating body 23 can be independently controlled respectively. For example, the first heating body 21, second heating body 22 and third heating body 23 form a parallel heating circuit and can heat alone or in combination.

[0045] The first heating body 21, second heating body 22 and third heating body 23 are all strip-shaped sheet structures. The first heating body 21, second heating body 22 and third heating body 23 can be strip-shaped sheet structures with equal widths, equal lengths or different lengths. Setting the first heating body 21, second heating body 22 and third heating body 23 as strip-shaped sheet structures with equal widths is convenient for production and processing. Of course, in other embodiments, the first heating body 21, second heating body 22 and third heating body 23 can also be strip-shaped sheet structures with different widths.

[0046] In this embodiment, the first heating body 21 is distributed in the first heating area 12 and the second heating area 13. The main part of the first heating body 21 is located in the first heating area 12, and a part of the first heating body 21 extends into the second heating area 13, that is, the area of the first heating body 21 located in the first heating area 12 is larger than the area located in the second heating area 13. With such a setting, the first heating body 21 can be mainly used to heat one end of the tobacco section of the atomization matrix 3 close to the suction section and preheat the middle position of the tobacco section.

[0047] The second heating body 22 is located in the first heating area 12 and the second heating area 13. The main part of the second heating body 22 is located in the second heating area 13, and a part of the second heating body 22 extends into the first heating area 12, that is, the area of the second heating body 22 located in the first heating area 12 is smaller than the area located in the second heating area 13. With such a setting, the second heating body 22 is mainly used to heat the axial middle section of the tobacco section of the atomization matrix 3, and the part of the second heating body 22 extending into the first heating area 12 can cooperate with the first heating body 21 for heating.

[0048] In other embodiments, the second heating body 22 can also be only located in the second heating area 13, and the axial middle section of the tobacco section of the atomization matrix 3 can also be heated.

[0049] In this embodiment, the third heating element 23 is located within the third heating zone 14. The third heating element 23 independently heats the third heating zone 14. The first heating element 21 and the second heating element 22 can separately heat the first heating zone 12 and the second heating zone 13 respectively, or the first heating element 21 and the second heating element 22 can jointly heat the first heating zone 12 and the second heating zone 13 in combination.

[0050] In this embodiment, the axial width of the second heating zone 13 is greater than that of the first heating zone 12. The second heating zone 13 can also be divided into a first sub - heating zone 131 and a second sub - heating zone 132. The first sub - heating zone 131 and the second sub - heating zone 132 are arranged side by side along the axis of the heating tube 1. The first heating zone 12, the first sub - heating zone 131, and the second sub - heating zone 132 are arranged in sequence. The first sub - heating zone 131 is closer to the first heating zone 12 than the second sub - heating zone 132.

[0051] The first heating element 21 is mainly distributed within the first heating zone 12 and the first sub - heating zone 131, and the end of the first heating element 21 can also extend into the second sub - heating zone 132. The second heating element 22 is mainly distributed within the first sub - heating zone 131 and the second sub - heating zone 132, and within the first sub - heating zone 131, the area of the first heating element 21 is smaller than that of the second heating element 22, such that within the first sub - heating zone 131, the heating by the second heating element 22 is the main, and the first heating element 21 can assist in heating or pre - heat the first sub - heating zone 131.

[0052] In this embodiment, the first heating element 21, the second heating element 22, and the third heating element 23 are each a curved line. The first heating element 21, the second heating element 22, and the third heating element 23 each have a positive terminal and a negative terminal. Among them, the positive terminals of the first heating element 21, the second heating element 22, and the third heating element 23 form three independent terminals, and the negative terminals of the first heating element 21, the second heating element 22, and the third heating element 23 converge into one terminal.

[0053] For the heating device of this embodiment, since the circumferential side wall of the heating tube 1 is divided into a first heating zone 12, a second heating zone 13, and a third heating zone 14 that are sequentially distributed along the axis, and corresponding independent first heating element 21, second heating element 22, and third heating element 23 are provided in the first heating zone 12, the second heating zone 13, and the third heating zone 14 respectively, the heating tube 1 can achieve zoned heating, perform circumferential heating on different axial parts of the atomization matrix 3 successively, which can reduce the heating area, is not likely to cause the problem of scalding the mouth. Zoned heating is also beneficial to improving the suction balance and avoiding continuous uneven heating of a certain part of the atomization matrix 3.

[0054] Please refer to Figure 3, in one embodiment, when the heating tube 1 is in a flat state, the first heating zone 12 and the second heating zone 13 are rectangular surfaces in the plane. The rectangular surface is divided into a first triangular zone a and a second triangular zone b along a diagonal. The right angle of the first triangular zone a is closer to the first end of the heating tube 1 than the right angle of the second triangular zone b, that is, the whole of the first triangular zone a is closer to the first end of the heating tube 1, and the whole of the second triangular zone b is closer to the middle of the heating tube 1. The first heating element 21 is bent and distributed in the first triangular zone a, and the second heating zone 13 is bent and distributed in the second triangular zone b. Among them, a small part of the first heating element 21 may also be located in the second triangular zone b, or a small part of the second heating element 22 is located in the first triangular zone a.

[0055] With such a layout, the main body of the first heating element 21 is located in the first heating zone 12, and the areas of the first heating element 21 located in the first heating zone 12, the first sub-heating zone 131, and the second sub-heating zone 132 decrease in sequence; the second heating element 22 is located in the main body second heating zone 13, and the areas of the second heating element 22 located in the first heating zone 12, the first sub-heating zone 131, and the second sub-heating zone 132 increase in sequence. The first heating element 21 and the second heating element 22 form a triangular layout that is mutually staggered and complementary, which is more conducive to the first heating element 21 heating the first end of the heating tube 1, preheating the middle of the heating tube 1, and when the first heating element 21 and the second heating element 22 are combined for heating, it can be more uniform.

[0056] Please refer to Figure 4 , in one embodiment, when the heating tube 1 is in a flat state, the first heating zone 12 and the second heating zone 13 are rectangular surfaces in the plane. The rectangular surface is divided into two centrosymmetric trapezoids along an oblique line. The rectangular surface is divided into a first trapezoidal zone c and a second trapezoidal zone d along an oblique line. The long right-angle side of the first trapezoidal zone c is closer to the first end of the heating tube 1 than the long right-angle side of the second trapezoidal zone d, that is, the whole of the first trapezoidal zone c is closer to the first end of the heating tube 1, and the whole of the second trapezoidal zone d is closer to the middle of the heating tube 1. The first heating element 21 is bent and distributed in the first trapezoidal zone c, and the second heating zone 13 is bent and distributed in the second trapezoidal zone d. Among them, a small part of the first heating element 21 may also be located in the second trapezoidal zone d, or a small part of the second heating element 22 is located in the first trapezoidal zone c.

[0057] With such a layout, the main body of the first heating element 21 is located within the first heating zone 12, and the areas of the first heating element 21 within the first heating zone 12, the first sub-heating zone 131, and the second sub-heating zone 132 decrease in sequence; the second heating element 22 is located within the main body second heating zone 13, and the areas of the second heating element 22 within the first heating zone 12, the first sub-heating zone 131, and the second sub-heating zone 132 increase in sequence. The first heating element 21 and the second heating element 22 form a trapezoidal layout that is mutually offset and complementary, which is more conducive to the first heating element 21 heating the first end of the heating tube 1, preheating the middle of the heating tube 1, and when the first heating element 21 and the second heating element 22 are combined for heating, it can be more uniform.

[0058] Please refer to Figure 5 , in one embodiment, an interval zone 15 can also be provided between the second heating zone 13 and the third heating zone 14. The interval zone 15 is used to separate the heating elements within the second heating zone 13 and the third heating zone 14, playing a certain heat insulation role. The heat energy generated by the first heating element 21 and the second heating element 22 within the second heating element 22 will not be quickly transferred to the third heating zone 14, enabling more independent heating of the third heating zone 14. Furthermore, independent heating of the end of the tobacco section of the atomization matrix 3 far from the suction section can be achieved, and a better smoking effect can be provided.

[0059] Among them, the axial width of the interval zone 15 can be set as required. For example, the axial width of the interval zone 15 is slightly smaller than the axial width of the third heating zone 14.

[0060] In other embodiments, the interval zone 15 can also not be provided between the second heating zone 13 and the third heating zone 14. By spacing the heating intervals of the first heating element 21, the second heating element 22, and the third heating element 23, a certain interval and independent heating effect can also be achieved.

[0061] Please refer to Figure 6 , in one embodiment, the heating device can also include a mounting seat 4. The mounting seat 4 includes an upper mounting seat 41 and a lower mounting seat 42. The first end of the heating tube 1 is fixedly connected to the upper mounting seat 41, and the second end of the heating tube 1 is fixedly connected to the lower mounting seat 42. The upper mounting seat 41 and the lower mounting seat 42 are used to fix the heating tube 1.

[0062] The mounting seat 4 can also include a sleeve 43. The sleeve 43 is located on the circumferential outer side of the heating tube 1. The inner diameter of the sleeve 43 is larger than the outer diameter of the heating tube 1. One end of the sleeve 43 is fixedly connected to the upper mounting seat 41, and the other end of the sleeve 43 is fixedly connected to the lower mounting seat 42. A sealed heat insulation cavity is formed between the sleeve 43 and the heating tube 1, which can prevent the heat of the heating tube 1 from overflowing, thereby improving the heating efficiency.

[0063] Among them, the sleeve 43 can be an integrated structure with one or both of the upper mounting base 41 and the lower mounting base 42, or can be connected by a labyrinth snap connection to form a sealed heat insulation cavity.

[0064] Please refer to Figure 7 and Figure 8 , in one embodiment, an atomizing device is provided. This atomizing device mainly includes a circuit board 5, a battery 6, and the heating device in any of the above embodiments. This atomizing device further includes an atomizing shell 7, and the circuit board 5, the battery 6, and the heating device in any of the above embodiments are installed in the atomizing shell 7.

[0065] An opening is provided at the end face of the atomizing shell 7, and the opening of the atomizing shell 7 is aligned and communicated with the heating cavity 11 of the heating tube 1. The user can insert the atomizing matrix 3 into the heating cavity 11 through the opening of the atomizing shell 7.

[0066] The circuit board 5 is electrically connected to the battery 6, the first heating element 21, the second heating element 22, and the third heating element 23 respectively. The battery 6 is used to supply electrical energy to the circuit board 5, the first heating element 21, the second heating element 22, and the third heating element 23. The circuit board 5 is used to control the first heating element 21, the second heating element 22, and the third heating element 23 to heat alone or in combination.

[0067] For example, when starting heating, start the first heating element 21 to start heating first, heating the upper section of the tobacco section of the atomizing matrix, so that the tobacco section quickly generates aerosol;

[0068] After a period of time, control the second heating element 22 to heat, control the first heating element 21 to reduce the temperature, assist in smoking and prevent the aerosol in the middle section of the tobacco section from condensing. At this time, focus on baking the middle section of the tobacco section;

[0069] Finally, start the third heating element 23 to heat, control the first heating element 21 and the second heating element 22 to reduce the temperature, assist in smoking and prevent the aerosol in the lower section of the tobacco section from condensing. At this time, focus on baking the lower section of the tobacco.

[0070] In the atomizing device of this embodiment, since the circumferential side wall of the heating tube 1 is divided into a first heating zone 12, a second heating zone 13, and a third heating zone 14 that are sequentially distributed along the axial direction, and corresponding independent first heating elements 21, second heating elements 22, and third heating elements 23 are respectively provided in the first heating zone 12, the second heating zone 13, and the third heating zone 14, the heating tube 1 can achieve zone heating, and perform circumferential heating on different axial parts of the atomizing matrix 3 successively, which can reduce the heating area, is not easy to cause the problem of scalding the mouth. Zone heating is also beneficial to improving the suction balance and avoiding continuous uneven heating of a certain part of the atomizing matrix 3.

[0071] The above uses specific examples to elaborate on the present utility model, which is only used to help understand the present utility model and is not intended to limit the present utility model. For those skilled in the technical field to which the present utility model pertains, based on the idea of the present utility model, several simple deductions, deformations or substitutions can also be made.

Claims

1. A heating device, characterized in that: include: A heating tube, the heating tube having a heating chamber for heating an atomized substrate, the heating tube having a first end and a second end opposite to each other, the first end having an insertion port for inserting and removing the atomized substrate, the second end having an air inlet or an air inlet hole; the circumferential side wall of the heating tube having a first heating zone, a second heating zone and a third heating zone sequentially distributed along the axial direction, the first heating zone being close to the first end, and the third heating zone being close to the second end; as well as A heating body, wherein the heating body is arranged on the outer side surface and / or the inner side surface of the circumferential side wall of the heating tube, and the heating body comprises a first heating body, a second heating body and a third heating body which are independent of each other; the first heating body is located in the first heating zone and the second heating zone, and the area of ​​the first heating body located in the first heating zone is larger than the area of ​​the first heating body located in the second heating zone; the second heating body is located in the second heating zone, and the third heating body is located in the third heating zone.

2. The heating device according to claim 1, characterized in that The second heating zone includes a first sub-heating zone and a second sub-heating zone distributed along the axial direction, the first sub-heating zone is close to the first heating zone, and the second sub-heating zone is close to the third heating zone; the first heating body is located in the first heating zone and the first sub-heating zone, and the second heating body is located in the first sub-heating zone and the second sub-heating zone.

3. The heating device according to claim 2, characterized in that The area of ​​the first heating body in the first sub-heating zone is smaller than the area of ​​the second heating body.

4. The heating device according to claim 2, characterized in that The first heating body is also distributed in the second sub-heating zone, and the areas of the first heating body located in the first heating zone, the first sub-heating zone and the second sub-heating zone decrease sequentially.

5. The heating device according to claim 2, characterized in that: The second heating body is also distributed in the first heating zone, and the areas of the second heating body located in the first heating zone, the first sub-heating zone and the second sub-heating zone increase sequentially.

6. The heating device according to claim 1, characterized in that The first heating zone and the second heating zone are rectangular surfaces when unfolded in a plane, and the rectangular surfaces are divided into a first triangular area and a second triangular area along a diagonal line, and the right angle of the first triangular area is closer to the first end than the right angle of the second triangular area; the first heating body is located in the first triangular area, and the second heating body is located in the second triangular area.

7. The heating device according to claim 1, characterized in that There is a spacing zone between the second heating zone and the third heating zone.

8. The heating device according to any one of claims 1 to 7, characterized in that: The first heating body, the second heating body and the third heating body are strip-shaped sheet structures with equal width.

9. An atomization device, characterized in that: It comprises a circuit board, a battery and the heating device according to any one of claims 1 to 8, wherein the circuit board is electrically connected to the battery, the first heating body, the second heating body and the third heating body respectively.

10. The atomizing device according to claim 9, characterized in that The circuit board is used to control the first heating body, the second heating body and the third heating body to heat individually or in combination.

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