WO2022088681A1

WO2022088681A1 - Heating element and atomization device

Info

Publication number: WO2022088681A1
Application number: PCT/CN2021/098419
Authority: WO
Inventors: 刘才学; 莫和臣; 臧佳栋
Original assignee: 深圳市基克纳科技有限公司
Priority date: 2020-10-30
Filing date: 2021-06-04
Publication date: 2022-05-05

Abstract

Provided are a heating element and an atomization device, the heating element comprising an insulating layer (1) and a heating layer (2), wherein the insulating layer (1) comprises a high-temperature region; the heating layer (2) is arranged in the high-temperature region of the insulating layer (1); and the area of the heating layer (2) is at least 60% of the area of the high-temperature region. A high-temperature region is in contact with a cigarette or cigarette cotton, such that the heating efficiency and the atomization efficiency of the cigarette can be increased.

Description

A heating element and atomizing device

technical field

The invention relates to the technical field of atomization heating, in particular to a heating element and an atomization device.

Background technique

Generally speaking, the heat-not-burn atomization devices on the market usually use heating elements to bake the cigarettes at high temperature, and then atomize the active ingredients in the cigarettes to generate smoke, so as to achieve the effect of simulating artificial cigarettes. In the prior art, the distribution area of the heating coating of the heating element is small, the heating efficiency is low, and the atomization efficiency is low, resulting in a poor smoking experience for the user.

Therefore, there is an urgent need for a heating element that can improve heating efficiency and atomization efficiency.

technical problem

The technical problem to be solved by the present invention is to provide a heating element which can improve heating efficiency and atomization efficiency.

technical solutions

In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is to provide a heating element, comprising an insulating layer and a heating layer, the insulating layer includes a high temperature area, and the heating layer is arranged at the high temperature area of the insulating layer, The area of the heat generating layer is at least 60% of the area of the high temperature region.

Further, the width of the heating element accounts for at least 70% of the width of the cigarette.

Further, the heat generating layer is a strip-shaped structure, and the strip-shaped structure is adapted to the shape of the insulating layer.

Further, the insulator is provided with a first electrode and a second electrode for connecting with a power supply, and the heat generating layer is connected with the first electrode and the second electrode.

Further, the first electrode comprises a connected first conductive part and a second conductive part, the first conductive part is connected with the heating element, and the second conductive part is used for connecting with a power supply;

The width of the second conductive portion is smaller than that of the first conductive portion, the first conductive portion and the second conductive portion form a boss structure, and the second electrode is arranged on the boss on the insulating layer Whitespace not covered by the structure.

Further, the heating element further includes a temperature measuring component, the temperature measuring component is disposed in the insulating layer and corresponds to the heating layer, and the temperature measuring component is used to detect the temperature of the heating layer.

Further, the temperature measuring assembly includes a thermistor wire, a first temperature measuring electrode and a second temperature measuring electrode;

Both ends of the thermistor wire are respectively connected to the first temperature measuring electrode and the second temperature measuring electrode, and the thermistor wire corresponds to the position of the heating layer.

Further, the thermistor wire forms a curved reciprocating structure, and the curved reciprocating structure corresponds to the position of the heating layer.

Further, the heat-generating layer is made of a heat-generating base material, and the heat-generating base material is composed of a heat-conducting material and a conductive material and is self-heating by being energized.

Further, the heat generating substrate is formed by mixing one or more of silicon carbide, molybdenum disilicide, lanthanum chromate, tin dioxide, zirconia or crystalline silicon with particles of a metal or alloy with high electrical conductivity.

Further, a resistance-reducing section is arranged on the heating layer, and the resistance value of the resistance-reducing section is lower than the resistance value of the heating substrate.

Further, the heating element further includes a temperature measuring layer, the temperature measuring layer, the insulating layer and the heating layer are stacked in sequence, and the temperature measuring layer is used to detect the temperature of the heating layer.

Further, the temperature measuring layer, the insulating layer and the heat generating layer are integrally formed by co-firing with surface glazing.

Further, the thickness of the insulating layer is less than or equal to 0.1 mm.

Further, the insulating layer is made of a material with electrical insulating properties and thermal conductivity.

Further, the temperature measuring layer includes a hard substrate, and the surface layer of the hard substrate is attached with a coating with a coefficient of temperature resistance variation.

Further, the hard matrix is made of zirconia or metal material.

Further, the heating layer includes a first heating layer and a second heating layer, the insulating layer includes a first insulating layer and a second insulating layer, the first heating layer, the first insulating layer, the measuring The warm layer, the second insulating layer and the second heat-generating layer are stacked in sequence, and the first heat-generating layer and the second heat-generating layer form an electrical circuit.

Further, the first insulating layer, the temperature measuring layer and the second insulating layer are provided with aligned through holes, and the first heat-generating layer and the second heat-generating layer pass through the The conductive bumps in the through holes are connected, and the first heat-generating layer and the second heat-generating layer are electrically connected through the conductive bumps to form an electric circuit.

The present invention also provides a heating element, comprising at least one heating layer, the heating layer is made of a heating base material, and the heating base material is composited with a thermally conductive material and a conductive material to generate heat by being energized.

At the same time, the present invention also provides an atomizing device, wherein the atomizing device includes the heating element described in any one of the above.

Further, the atomizing device also includes an atomizing unit, a control unit and a power supply unit;

The atomizing unit includes a housing, a smoke chamber and the heating element arranged in the housing, the atomizing unit is electrically connected with the control unit, and the control unit is electrically connected with the power supply unit.

beneficial effect

The beneficial effect of the present invention is that a heating layer is arranged on the insulating layer, and the heating layer is used for heating the cigarettes. The insulating layer includes a high temperature area, the high temperature area is in contact with the cigarette, the heating layer is arranged in the high temperature area, and the area of the heating layer accounts for at least 60% of the area of the high temperature area, which can increase the heating efficiency and atomization efficiency of the cigarette, so that smokers can get better experience.

Description of drawings

The specific structure of the present invention will be described in detail below in conjunction with the accompanying drawings:

1 is a front view of a heating element in an embodiment of the present invention;

2 is a cross-sectional view of a heating element in an embodiment of the present invention;

3 is a schematic structural diagram of a heating element in an embodiment of the present invention;

4 is a schematic diagram of an explosion structure of a heating element in an embodiment of the present invention;

5 is a schematic structural diagram of a heating element in an embodiment of the present invention;

In the figure: 1-insulating layer, 101-first insulating layer, 102-second insulating layer, 2-heating layer, 201-first heating layer, 202-second heating layer, 203-conductive bump, 21-th One electrode, 211-first conductive part, 212-second conductive part, 22-second electrode, 3-temperature measuring component, 31-thermistor wire, 32-first temperature-measuring electrode, 33-second temperature-measuring Electrode, 4-temperature measurement layer, 401-through hole.

Embodiments of the present invention

In order to describe the technical content, structural features, achieved objects and effects of the present invention in detail, the following detailed description is given in conjunction with the embodiments and the accompanying drawings.

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

In the prior art, the distribution area of the heat-generating coating is small, the heat-generating efficiency is low, and the atomization efficiency is low, resulting in a poor smoking experience for the user. The present invention provides a heating element suitable for heating cigarettes to generate smoke, comprising an insulating layer 1 , a heating layer 2 and a temperature measuring component 3 , please refer to FIG. 1 and FIG. 2 .

The insulating layer 1 is a ceramic substrate with the characteristics of electrical insulation and heat conduction. The insulating layer includes a high temperature area, the high temperature area directly contacts the cigarette, and the cigarette is heated and atomized in the high temperature area. The heating layer 2 is arranged at the high temperature area of the insulating layer 1, the first electrode 21 and the second electrode 22 are arranged at the non-high temperature area of the insulating layer 1, the heating layer 2 is connected with the first electrode 21 and the second electrode 22, and the first electrode 21 and the second electrode 22 are arranged at the non-high temperature area of the insulating layer 1. The electrode 21 and the second electrode 22 are connected to an external power supply. It should be noted that, in order to increase the heating efficiency and atomization efficiency, the area of the heating layer 2 is at least 60% of the area of the high temperature region, which can fully heat the cigarettes.

The temperature measuring component 3 is arranged in the insulating layer 1, and the temperature of the high temperature area is measured at any time when the heating layer 2 is working. Efficiency ensures the user's experience, and can also avoid the phenomenon that the local temperature is too high, causing the cigarettes to be scorched and burnt, resulting in a sticky smell.

The temperature measurement component 3 corresponds to the position of the heating layer 2, that is, the temperature measurement component 3 and the heating layer 2 are aligned in the thickness direction of the insulator 1, and the temperature measurement component 3 can monitor the temperature change of the heating layer 2 in time, and feedback and adjust the heating in time. Layer 2 performance.

As an example, in one embodiment, the temperature measuring component 3 is arranged in a high temperature area in a high temperature area, and the high temperature area can be measured according to the actual heating condition of the heating layer 2 . The temperature measuring component 3 can measure the higher temperature in the high temperature area, so as to avoid the burning phenomenon of the cigarettes caused by the overheating of the heating layer 2 and ensure the taste of the cigarettes.

In the heating element provided by the present invention, the insulating layer 1 is provided with a heating layer 2, the heating layer 2 is connected to the first electrode 21 and the second electrode 22, the first electrode 21 and the second electrode 22 are used to connect the power supply, and the heating layer 2 for heating cigarettes. The insulating layer 1 includes a high temperature area, the high temperature area is in contact with the cigarette, the heating layer 2 is arranged in the high temperature area, and the area of the heating layer 2 accounts for at least 60% of the high temperature area, which can increase the heating efficiency and atomization efficiency of the cigarette, so that Smokers get a better experience. The position corresponding to the heating layer 2 is also provided with a temperature measuring component 3, which can monitor the working efficiency of the heating layer 2, and timely feedback and adjust the working performance of the heating layer.

In the heating element provided by the present invention, the heating layer 2 is arranged in the high temperature region of the insulating layer 1, which can fully heat the cigarette. Specifically, in this embodiment, the heat generating layer 2 is a strip-shaped structure, and the strip-shaped structure is adapted to the shape of the insulating layer 1 .

As a preference, the width of the heating element will determine the contact area between the heating layer 2 and the cigarette. When the width of the heating element itself is sufficient, the heating layer 2 can fully cover the surface of the cigarette, which can effectively improve the atomization of the cigarette. efficiency. In this embodiment, the width or diameter of the heating element accounts for more than 70% of the cigarette. After the cigarette is inserted into the heating element, the contact area between the heating element and the cigarette can be further increased, and the atomization efficiency can be improved.

In some embodiments, when the insulating layer 1 has a cylindrical or prismatic structure, the strip-shaped structure of the heating layer 2 is the same as the side surface of the cylindrical or prismatic structure. In this embodiment, the insulating layer 1 includes a columnar portion and a tapered portion. The tapered portion is provided at the end of the columnar portion, and the strip structure extends to the tapered portion to ensure that the heating effect of the end portion of the heating element is consistent with that of the middle portion.

The first electrode 21 and the second electrode 22 are connected to the heating layer 2 and the external power supply. As a preference, the first electrode 21 includes a first conductive portion 211 and a second conductive portion 212, and the width of the second conductive portion 212 is smaller than the width of the first conductive portion 212. A width of the conductive portion 211 , the first conductive portion 211 and the second conductive portion 212 form a boss structure, and the second electrode 22 is disposed on a blank space on the insulator 1 that is not covered by the boss structure. The size of the space occupied by the first electrode 21 and the second electrode 22 is reduced, the volume of the insulating layer 1 is not increased, and the area of the heating layer 2 can reach more than 60% of the high temperature area.

In the heating element provided by the present invention, a temperature measuring component 3 is also provided at a position corresponding to the heating layer 2, which can monitor the working efficiency of the heating layer 2, and timely feedback and adjust the working performance of the heating layer. Specifically, the temperature measuring assembly 3 includes a thermistor wire 31 , a first temperature measuring electrode 32 and a second temperature measuring electrode 33 .

Both ends of the thermistor wire 31 are respectively connected to the first temperature measuring electrode 32 and the second temperature measuring electrode 33, and the position of the thermistor wire 31 corresponds to the position of the heating layer 2, which can improve the working efficiency of the heating layer 2. Monitoring, timely feedback and adjusting the working performance of the heating layer 2.

In order to be able to accurately measure the temperature of all parts of the heating layer 2, the distribution of the thermistor wires 31 should be uniform, and the spacing should not be too large. As a preference, in this embodiment, the thermistor wire 31 forms a curved reciprocating structure, and the curved reciprocating structure corresponds to the position of the heating layer 2 . The curved and reciprocating structure can increase the distribution density of the thermistor wires 31 , increase the accuracy of the temperature measuring component 3 , and avoid local temperature feedback hysteresis.

Please refer to FIG. 3 to FIG. 5 , the present invention also provides another heating element, the heating element includes at least one heating layer 2, the heating layer 2 is also called a heating layer, and the heating layer 2 is made of a heating base material. The material is made of a composite of thermally conductive materials and conductive materials, and it generates heat by energizing itself. When there are multiple heat-generating layers 2, an insulating layer is provided between the multiple heat-generating layers 2 to separate. The heating layer 2 has a larger coverage area, and the area of the heating layer 2 can be the same as the area of the high temperature region of the insulating layer.

The heating layer uses its own material characteristics to generate heat by itself, replacing the traditional resistance wire or printed resistance circuit. The selection of materials is limited; when heating, the surface heating formed by the heating of the entire heating layer greatly improves the uniformity of the surface temperature of the heating element and the effective heat conduction area, and the heating efficiency is also high.

Preferably, the heat-generating substrate of the heat-generating layer 2 is made of silicon carbide, molybdenum disilicide, lanthanum chromate, tin dioxide, zirconium oxide or crystalline silicon by sintering together with particles of one or more mixed metals or alloys with high conductivity. become.

Preferably, the heating layer 2 is provided with a resistance reducing section, and the resistance value of the resistance reducing section is lower than the resistance value of the heating substrate. The resistance-reducing section is used for electrical connection with the wire or the shrapnel to facilitate electrical conduction. Generally, the resistance-reducing section is located on the outer surface of the heating layer 2 . The resistance-reducing section is formed by changing the mixing ratio or adding a conductive coating on the surface of the heating substrate. Preferably, the resistance-reducing section is made of silver or platinum.

Please refer to FIG. 3 to FIG. 5 , the heating element further includes a temperature measuring layer 4, an insulating layer 1 is provided between the temperature measuring layer 4 and the heating layer 2, and the temperature measuring layer 4, the insulating layer 1 and the heating layer 2 are glazed on the surface together. Burnt one piece. The heat conduction capability is improved, and the gap between the temperature measuring layer 4, the insulating layer 1 and the heating layer 2 is prevented from affecting the heat conduction. The heating layer and the temperature measuring layer 4 are isolated by the insulating layer 1 and controlled independently, which can take into account the heating efficiency and temperature control accuracy. The heating part can be made of low TCR materials or materials without obvious TCR characteristics, so that the heating part can be kept at high temperature. The resistance value ensures the heating efficiency. The temperature measurement part uses materials with relatively large relative resistance value and TCR, which is convenient for detection and ensures the temperature control accuracy of the solution board. At the same time, since the insulating layer 1 of the heating layer and the temperature measuring layer 4 are stacked, the temperature measuring layer 4 can measure the temperature of the entire heating element, overcoming the disadvantage that the traditional solution only measures the temperature of a part of the substrate. And the structural stability has been enhanced. Through the stacking of the heating layer, the insulating layer 1 and the temperature measuring layer 4, and then the surface is glazed and co-fired to form an integral part, which combines the heating efficiency and mechanical strength, and solves the problem that the traditional electric heating material is brittle and easy to break. shortcoming.

Preferably, the thickness of the insulating layer 1 is less than or equal to 0.1 mm, so that the insulating layer 1 has better heat transfer effect, so that the temperature of the entire heating element can be accurately measured.

Preferably, the insulating layer 1 is made of a material with electrical insulating properties and thermal conductivity. It can not only ensure the measurement of the temperature measuring layer 4, but also electrically insulate and isolate the heating layer 2 and the temperature measuring layer 4.

Preferably, the temperature measuring layer 4 includes a hard substrate, and the surface layer of the hard substrate is attached with a coating with a coefficient of temperature resistance variation. The hard substrate can improve the strength, avoid the breakage of the heating element, and ensure the stability.

Preferably, the hard substrate is made of a hard material with thermal conductivity. In particular, the hard matrix is made of zirconia or metallic material.

Referring to FIG. 4, when there are multiple heating layers 2, at least one conductive bump 203 is provided on the heating layer 2, and the insulating layer 1 and the temperature measuring layer 4 are provided with through holes 401 through which the conductive bumps 203 extend. The adjacent heating layer 2 is electrically connected through the conductive bumps 203 to form an electrical circuit. It can be understood that the through holes 401 are electrically insulated from the conductive bumps 203 . Preferably, the heating surface is perpendicular to the conductive bumps 203, that is, the heating surface is perpendicular to the energization loop. By increasing the number of conductive bumps 203 and/or changing their positional distribution, the heat distribution and resistance can be changed to achieve segmented heating. , the design is flexible and does not increase the material cost. Simply, two adjacent conductive bumps 203 can be in contact to form an electrical connection, or one of the heating layers 2 can be provided with conductive bumps 203, and the adjacent heat-generating layer 2 can be set on a conductive blind matched with the conductive bumps 203. hole.

3 to 5, the heating layer 2 includes a first heating layer 201 and a second heating layer 202, the insulating layer 1 includes a first insulating layer 101 and a second insulating layer 102, the first heating layer 201, the first insulating layer 101. The temperature measuring layer 4, the second insulating layer 102 and the second heating layer 202 are stacked in sequence. The first heating layer 201 and the second heating layer 202 form an electrical circuit through the conductive bumps 203, and the first heating layer 201 and the second heating layer 201. An electrode is provided on each of the layers 202 .

There are two heating layers 2, which are respectively located on both sides of the outermost layer of the entire heating unit to form double-sided heating, which can be used without distinguishing the front and back sides.

Generally, the insertion end of the heating unit is a tip, generally in the shape of a triangle. In particular, the rear end of the temperature measuring layer 4 away from the insertion end is provided with a bump, the bump is provided with a groove, and the insulating layer 1 and the heating layer 2 are provided with The grooves fit the tail. Generally, the resistance reducing section of the heating layer 2 is arranged at the rear end.

To sum up, in another heating element provided by the present invention, the heating layer 2 utilizes its own performance to generate heat as a whole, and the surface generates heat, which greatly improves the uniformity of the surface temperature of the heating element and the effective heat conduction area, and the heating efficiency is also high; The insulating layer is arranged between the temperature measuring layer 4, which can take into account the heating efficiency and temperature control accuracy. The temperature measuring layer 4 can measure the temperature of the entire heating element, which overcomes the disadvantage of only measuring the temperature of part of the substrate in the traditional scheme; It is integrally formed, the structural stability has been enhanced, and the heating efficiency and mechanical strength are combined, which solves the shortcomings of traditional electric heating materials that are brittle and easy to break.

At the same time, the present invention also provides an atomizing device, and the atomizing device includes the heating element provided in any embodiment of the present invention.

Preferably, the atomizing device includes an atomizing unit, a control unit and a power supply unit, the atomizing unit includes a housing, a smoke chamber and a heating element, the smoke chamber is arranged inside the housing, and the heating element is located in the smoke chamber. When in use, the cigarettes are put into the cigarette bin, and the cigarettes are atomized by receiving the heat from the heating element. The contact range between the heating layer on the heating element and the cigarettes is larger, so the atomization is more uniform and more efficient.

The atomizing unit is electrically connected with the control unit, and the control unit is used to realize the opening, closing and working efficiency of the atomizing unit. The power supply unit is electrically connected with the control unit, and provides electrical energy for the operation of the atomizing device.

The control unit is also connected with the temperature measuring component or the temperature measuring layer to monitor the temperature of the heating unit in real time, and effectively adjust the temperature according to the real-time temperature to avoid the phenomenon of excessively high or low temperature. At the same time, the control unit can also match different temperature control curves according to the type of cigarettes and the smoking habits of different users, and accurately control the temperature of the heating elements at each stage, which can better meet various needs and can effectively save electricity.

To sum up, in the heating element and the atomizing device provided by the present invention, a heating layer is provided on the insulating layer, and the heating layer is connected to the first electrode and the second electrode, and the first electrode and the second electrode are used for connecting the power supply to generate heat. Layers are used to heat the cigarettes. The insulating layer includes a high temperature area, the high temperature area is in contact with the cigarette, the heating layer is arranged in the high temperature area, and the area of the heating layer accounts for at least 60% of the area of the high temperature area, which can increase the heating efficiency and atomization efficiency of the cigarette, so that smokers can get better experience. The position corresponding to the heating layer is also provided with a temperature measuring component or a temperature measuring layer, which can monitor the working efficiency of the heating layer, and timely feedback and adjust the working performance of the heating layer.

The above descriptions are only the embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied to other related technologies Fields are similarly included in the scope of patent protection of the present invention.

Claims

A heating element is characterized in that it includes an insulating layer and a heating layer, the insulating layer includes a high temperature area, the heating layer is arranged at the high temperature area of the insulating layer, and the area of the heating layer is at least the high temperature area. 60% of the area.
The heating element according to claim 1, wherein the width of the heating element accounts for at least 70% of the width of the cigarette.
The heating element according to claim 1, wherein the heating layer is a strip-shaped structure, and the strip-shaped structure is adapted to the shape of the insulating layer.
The heating element according to claim 1, wherein the insulator is provided with a first electrode and a second electrode for connecting with a power supply, and the heating layer is connected to the first electrode and the second electrode. connect.
The heating element according to claim 4, wherein the first electrode comprises a connected first conductive portion and a second conductive portion, the first conductive portion is connected to the heating element, and the second conductive portion is connected to the heating element. The part is used to connect with the power supply;

The width of the second conductive portion is smaller than that of the first conductive portion, the first conductive portion and the second conductive portion form a boss structure, and the second electrode is arranged on the boss on the insulating layer Whitespace not covered by the structure.
The heating element according to claim 1, characterized in that, the heating element further comprises a temperature measuring component, the temperature measuring component is disposed in the insulating layer and corresponds to the heating layer, and the temperature measuring component for detecting the temperature of the heat generating layer.
The heating element according to claim 6, wherein the temperature measuring assembly comprises a thermistor wire, a first temperature measuring electrode and a second temperature measuring electrode;

Both ends of the thermistor wire are respectively connected to the first temperature measuring electrode and the second temperature measuring electrode, and the thermistor wire corresponds to the position of the heating layer.
The heating element according to claim 7, wherein the thermistor wire forms a curved reciprocating structure, and the curved reciprocating structure corresponds to the position of the heating layer.
The heating element according to claim 1, characterized in that, the heating layer is made of a heating substrate, and the heating substrate is composed of a thermally conductive material and a conductive material to generate heat by being energized.
The heating element according to claim 9, wherein the heating substrate is made of one or more of silicon carbide, molybdenum disilicide, lanthanum chromate, tin dioxide, zirconium oxide or crystalline silicon with high electrical conductivity A mixture of particles of metal or alloy.
The heating element according to claim 9, wherein a resistance reducing section is arranged on the heating layer, and the resistance value of the resistance reducing section is lower than the resistance value of the heating substrate.
The heating element according to claim 9, characterized in that, the heating element further comprises a temperature measuring layer, the temperature measuring layer, the insulating layer and the heating layer are stacked in sequence, and the temperature measuring layer is used for The temperature of the heat generating layer is detected.
The heating element according to claim 12, wherein the temperature measuring layer, the insulating layer and the heating layer are integrally formed by co-firing with surface glazing.
The heating element according to claim 12, wherein the thickness of the insulating layer is less than or equal to 0.1 mm.
The heating element according to claim 12, wherein the insulating layer is made of a material having electrical insulating properties and thermal conductivity.
The heating element according to claim 12, wherein the temperature measuring layer comprises a hard substrate, and the surface layer of the hard substrate is attached with a coating with a coefficient of temperature resistance variation.
The heating element according to claim 16, wherein the hard base is made of zirconia or a metal material.
The heating element according to claim 12, wherein the heating layer comprises a first heating layer and a second heating layer, the insulating layer comprises a first insulating layer and a second insulating layer, and the first heating layer , The first insulating layer, the temperature measuring layer, the second insulating layer and the second heating layer are stacked in sequence, and the first heating layer and the second heating layer form an electrical circuit.
The heating element according to claim 18, wherein the first insulating layer, the temperature measuring layer and the second insulating layer are provided with aligned through holes, and the first heating layer and the second insulating layer are provided with aligned through holes. The two heat-generating layers are connected by conductive bumps pierced through the through holes, and the first heat-generating layer and the second heat-generating layer are electrically connected through the conductive bumps to form an electrical circuit.
A heating element is characterized in that it includes at least one heating layer, the heating layer is made of a heating base material, and the heating base material is made of a composite of a thermally conductive material and a conductive material to generate heat by being energized.
An atomizing device, characterized in that, the atomizing device comprises the heating element according to any one of claims 1-20.
The atomizing device of claim 21, wherein the atomizing device further comprises an atomizing unit, a control unit and a power supply unit;

The atomizing unit includes a housing, a smoke chamber and the heating element arranged in the housing, the atomizing unit is electrically connected with the control unit, and the control unit is electrically connected with the power supply unit.