Heating piece, heating assembly and atomization device

Abstract

The utility model discloses a heating part, a heating assembly and an atomizing device, the heating part is used for atomizing atomized liquid conducted by a liquid guide part, the heating part comprises at least two heating parts, the at least two heating parts are used for being wrapped by the liquid guide part, the at least two heating parts are arranged up and down, and the heating parts are arranged in the vertical direction and are used for heating the atomized liquid. The heating efficiency of the at least two heating parts is gradually increased. Due to the fact that the liquid guiding efficiency of the atomized liquid of the liquid guiding piece from top to bottom in the height direction of the liquid guiding piece is gradually increased, when at least two heating components with the heating efficiency gradually increased from top to bottom are adopted, the corresponding heating component generates large heat for the portion with the large liquid guiding efficiency, and the liquid guiding efficiency of the liquid guiding piece is greatly improved. Therefore, the part of atomized liquid can be fully heated, the problem that the heat is not matched with the liquid guide amount is avoided, and the problem that a core is burnt due to dry burning can be prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of atomizers, in particular to a heating element, a heating assembly and an atomization device. BACKGROUND

[0002] The atomized liquid can be heated by the heating element to generate aerosol. In related technologies, in order to improve the heating efficiency of the heating element, the heating element is usually heated under high power conditions. However, the heating element under high power conditions has the problem of uneven heating power distribution, which leads to local overheating and further causes dry burning and a burnt wick, thereby affecting the user experience. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to provide a heating element, a heating assembly and an atomization device, which can avoid the problem of dry burning and burnt wick and improve the user experience.

[0004] According to a first aspect of the present application, the present application provides a heating element for atomizing the atomized liquid conducted by a liquid guide, the heating element comprising at least two heating components, the at least two heating components being covered by the liquid guide, the at least two heating components being arranged in an up-down direction: wherein the heating efficiency of the at least two heating components gradually increases along the up-down direction.

[0005] In some embodiments, the resistivity of the at least two heating components gradually increases along the up-down direction.

[0006] In some embodiments, the at least two heating components can work synchronously or asynchronously.

[0007] In some embodiments, the at least two heating components are connected in parallel.

[0008] In some embodiments, the heating element further comprises a common electrode and at least two connecting electrodes, the at least two connecting electrodes respectively corresponding to the at least two heating components one by one, the connecting electrodes corresponding to the heating components being weldedly connected, and the common electrode being weldedly connected to each of the heating components; the connecting electrodes are used to connect a first pole of an external power supply, and the common electrode is used to connect a second pole of the external power supply.

[0009] In some embodiments, under the same temperature conditions and along the up-down direction, the linear expansion coefficients of the at least two heating components gradually decrease, and the linear expansion coefficient of the previous heating component and the linear expansion coefficient of the next heating component in the adjacent two heating components differ by 3x10 -6 / ℃ to 6x10 -6 / ℃.

[0010] In some embodiments, the heat-generating component includes at least two heat-generating lines, a plurality of first heat-conducting bodies, a plurality of second heat-conducting bodies, and two electrically-conductive parts, the at least two heat-generating lines are parallel to and spaced apart from each other, the two electrically-conductive parts are respectively connected to two ends of the heat-generating lines in the length direction of the heat-generating lines, the heat-generating lines have a plurality of preset connecting sites arranged along the length direction of the heat-generating lines, the plurality of first heat-conducting bodies are respectively connected between the plurality of preset connecting sites of adjacent two heat-generating lines, and the plurality of second heat-conducting bodies are connected to the outer sides of the first heat-generating line and the last heat-generating line.

[0011] According to a second aspect of the present application, the present application provides a heating assembly, including the heating piece, and further including a liquid guide, at least two heat-generating components in the heating piece are wrapped in the liquid guide, the liquid guide is used for conducting atomized liquid to the heating piece, and the heat-generating components are used for heating the atomized liquid to generate aerosol.

[0012] In some embodiments, the heating assembly further includes an atomization tube, the liquid guide and at least two heat-generating components wrapped in the liquid guide are installed inside the atomization tube, the atomization tube is provided with at least one liquid inlet, and the liquid inlet at least includes a region respectively opposite to two heat-generating components.

[0013] According to a third aspect of the present application, the present application provides an atomization device, including the heating assembly.

[0014] According to the heating piece, the heating assembly and the atomization device provided in the above embodiments, since the liquid guiding efficiency of the liquid guide is gradually increased from top to bottom along the height direction of the liquid guide, when at least two heat-generating components with gradually increased heat-generating efficiency from top to bottom are used, the heat-generating component corresponding to the part with larger liquid guiding efficiency generates larger heat, so that the atomized liquid in this part can be sufficiently heated, thereby avoiding the problem of heat and liquid guiding amount mismatch, and the problem of dry burning and burnt core can be prevented. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A perspective view of the heating piece provided by the present application is installed inside the liquid guide;

[0016] Figure 2 A perspective view of the heating piece provided by the present application is installed inside the liquid guide;

[0017] Figure 3 An expanded view of the heating piece provided by the present application is installed inside the liquid guide;

[0018] Figure 4 A structural schematic view of the heating assembly provided by the present application is installed inside the liquid guide;

[0019] Figure 5 A structural schematic view of the atomization device provided by the present application is installed inside the liquid guide.

[0020] Reference signs:

[0021] Heating element 10, heating component 11, mesh 110, heating line 111, preset connection position 1110, first heat conductor 112, second heat conductor 113, conductive part 114, common electrode 12, connection electrode 13, liquid guide 20, liquid guide body 21, mounting channel 211, protruding part 22, liquid storage 30, atomization channel 31, atomization tube 40, liquid inlet 41, notch 42, external power supply 50, suction nozzle 60, suction nozzle channel 61. DETAILED DESCRIPTION

[0022] The application will be described in further detail below with reference to the drawings. Like elements in different embodiments are denoted by like reference numerals. In the following description, numerous specific details are described to provide a thorough understanding of the application. However, those of skill in the art will recognize that the application can be practiced without one or more of the specific details. In other instances, well-known structures have not been described in order to avoid obscuring the application. Furthermore, the skilled person can understand that some operations involved in the embodiments described in the specification can not be shown or described in the specification, in order to avoid the core of the application being obscured by too much description, and that it is not necessary to describe these operations in detail for the skilled person to fully understand them based on the description in the specification and general technical knowledge in the art.

[0023] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various embodiments, and the operation steps involved in each embodiment can also be sequentially adjusted or modified in a manner that is obvious to the skilled person. Therefore, the specification and drawings are only intended to clearly describe one embodiment, and do not mean that the components and / or order are necessary.

[0024] The serial numbers of components in this document, 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" in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0025] In the related art, the heating element cooperates with the liquid guide element to conduct the atomized liquid to the heating element for heating and atomization to generate aerosol. The heating element is usually in a mesh structure, and an installation channel penetrating the liquid guide element in the axial direction is arranged inside the liquid guide element. The heating element is a heating element bent into a columnar structure from a mesh heating material, and the heating element is installed in the installation channel. Due to the influence of the atomized liquid gravity, the atomized liquid is more distributed in the lower half of the liquid guide element from top to bottom. Therefore, the amount of atomized liquid conducted by the upper half of the liquid guide element is significantly less than the amount of atomized liquid conducted by the lower half of the liquid guide element, so that the atomized liquid is unevenly distributed on the liquid guide element. Under the premise of consistent heating surface area and heat conduction rate of the heating element, under high power conditions, the heating element faces the problem of dry burning and burnt core due to too fast heating and insufficient supply of atomized liquid.

[0026] To solve the above problems, in the atomization device using a liquid storage element to store atomized liquid, the heating element usually adopts a heating assembly composed of upper and lower parallel vertical double heating elements. In the structure of the vertical double heating assembly, the positions of the two heating elements in the liquid guide element are different in height. If the overall density of the liquid guide element is consistent, the liquid guide rate of the liquid guide element at the position of the upper heating sheet will be less than that at the position of the lower heating sheet due to the influence of gravity. When the upper and lower heating sheets are working, the content of atomized liquid in the area where the upper heating sheet is located is relatively low compared to the area where the lower heating sheet is located. This easily leads to the risk of dry burning and burnt core of the liquid guide element where the upper heating sheet is located.

[0027] To solve the above problems, the present application provides a heating element, a heating assembly and an atomization device. The heating efficiency of the at least two heating components arranged above and below is gradually increased in the upward direction. In this way, the uneven liquid guide rate of the liquid guide element can be adapted. The lower heating component can be quickly heated relative to the upper heating component, thereby balancing the liquid guide rate and avoiding the problem of dry burning and burnt core, and improving the user experience.

[0028] Referring to Figure 1 The heating element 10 provided by the embodiment is used to heat and atomize the atomized liquid conducted by the liquid guide element 20. The atomized liquid is a liquid material that is atomized to generate aerosol in a heated state. The liquid guide element 20 is usually made of fiber cotton material and can store atomized liquid by adsorption and conduct the atomized liquid to the heating element 10 in a saturated state. The heating element 10 can generate heat under the action of electric energy, so as to heat and atomize the atomized liquid to generate aerosol under the action of heating heat.

[0029] Referring to Figures 1-3As shown, the heating element 10 comprises at least two heating components 11, which are covered by the liquid guide 20. Specifically, the liquid guide 20 is internally provided with an installation channel 211 extending in the height direction thereof, the at least two heating components 11 are arranged in an up-down manner, and are installed in the installation channel 211 and closely contact the side wall of the installation channel 211, so that the liquid guide 20 conducts the atomized liquid to the heating components 11.

[0030] As shown, Figure 1 In actual use, the liquid guide 20 is installed along the height direction thereof, and in combination with Figure 5 As shown, the liquid guide 20 is further provided with a liquid storage element 30 on the outside thereof, which is used for storing the atomized liquid. The liquid storage element 30 is internally provided with an atomization channel 31 extending in the height direction thereof, and the liquid guide 20 is installed in the atomization channel 31 and closely contacts the side wall of the atomization channel 31. In this way, the atomized liquid stored in the liquid storage element 30 can be conducted to the liquid guide 20, and then conducted to the heating element 10 by the liquid guide 20 for heating.

[0031] In some embodiments, the liquid storage element 30 is also made of fiber cotton material to store the atomized liquid in an adsorbing manner. In order to facilitate the installation of the liquid guide 20, as shown in Figure 4 and Figure 5 As shown, the atomization tube 40 is usually made of metal material, for example, the atomization tube 40 is made of stainless steel material. The liquid guide 20 of the heating element 10 is installed in the installation channel 211 in the inside of the atomization tube 40, and the atomization tube 40 is installed in the atomization channel 31. At least one liquid inlet 41 is formed on the atomization tube 40, so that the atomized liquid stored in the liquid storage element 30 can be conducted to the liquid guide 20 through the liquid inlet 41.

[0032] In an embodiment, the liquid inlet 41 is formed in the middle of the atomization tube 40 corresponding to the upper and lower heating components 11. The atomized liquid can be conducted from the upper and lower sides through the liquid inlet 41 by capillary action. The lower heating component 11 has a faster liquid conducting speed due to the action of gravity, so as to match the heating component 11 with higher heating efficiency, and the liquid contacted by the upper heating component 11 is not too little.

[0033] In some embodiments, the conductive rate of the atomized liquid is higher when the liquid guide 20 is in contact with the liquid storage 30, and therefore, the atomized pipe 40 is further provided with a notch 42. The liquid guide 20 is composed of a liquid guide body 21 and a protruding part 22, which is formed on the outer surface of the liquid guide body 21 and protrudes outward along the radial direction of the liquid guide body 21. After the liquid guide 20 is installed inside the atomized pipe 40, the protruding part 22 extends to the outside of the atomized pipe 40 through the notch 42, and after the atomized pipe 40 is installed into the atomized channel 31, the protruding part 22 can extend to be in full contact with the liquid storage 30. Of course, it is understood that, in order to ensure the liquid guiding effect, the protruding part 22 is arranged on the outer surface of the liquid guide body 21 along the height direction of the liquid guide 20.

[0034] As shown in Figure 1 , wherein the dotted arrows represent the atomized liquid and the conductive direction of the atomized liquid. In this embodiment, two heat generating components 11 are taken as an example for illustration, which are installed in the installation channel 211 of the liquid guide 20. After the liquid guide 20 is in full contact with the liquid storage 30, the liquid storage 30 conducts the atomized liquid to the liquid guide 20, Figure 1 as shown in the dotted arrows outside the liquid guide 20 and pointing to the liquid guide 20, which represent the direction of the atomized liquid conducted by the liquid storage 30 to the liquid guide 20. Under the influence of the gravity of the atomized liquid itself, the amount of the atomized liquid conducted by the liquid storage 30 to the part of the liquid guide 20 corresponding to the upper heat generating component 11 is less than that to the part of the liquid guide 20 corresponding to the lower heat generating component 11, wherein, Figure 1 as shown in the downward dotted arrows from top to bottom, which represent the direction of the atomized liquid conducted downward under the action of the gravity itself, thus leading to the uneven distribution of the atomized liquid on the liquid guide 20.

[0035] In this embodiment, the heat generating efficiency of the at least two heat generating components 11 gradually increases along the up-down direction in which the at least two heat generating components 11 are arranged, wherein the heat generating efficiency is the amount of heat generated by the heat generating component 11 within a predetermined time, and the greater the heat generating efficiency, the more heat generated by the heat generating component 11 within the predetermined time. Therefore, under the premise that the liquid guiding efficiency of the atomized liquid gradually increases from top to bottom along the up-down direction in which the at least two heat generating components 11 are arranged (the height direction of the liquid guide 20), when the at least two heat generating components 11 with gradually increasing heat generating efficiency from top to bottom are used, the heat generating component 11 corresponding to the part with higher liquid guiding efficiency generates more heat, so that the atomized liquid in this part can be fully heated, thereby avoiding the problem of mismatch between heat and liquid guiding amount, and thus preventing the problem of dry burning and burnt core.

[0036] The heating components 11 gradually increase in heating efficiency from top to bottom along the up-down direction of the arrangement of the at least two heating components 11, so that the heat generated by the heating components 11 gradually increases. Taking two heating components 11 as an example, the upper heating component 11 gradually increases in heat generation from top to bottom along the up-down direction of the arrangement in a manner of 1kw, 2kw, 3kw, 4kw, 5kw…, and the lower heating component 11 gradually increases in heat generation from top to bottom along the up-down direction of the arrangement in a manner of 6kw, 7kw, 8kw, 9kw, 10kw…. Of course, the heat generation of the heating components 11 from top to bottom can be formed in an incremental manner of nkW, (n+1)kW, (n+2)kW, (n+3)kW, (n+4)kW…, where n can be a number greater than 0.

[0037] In the present application, the temperature coefficient of resistance (TCR) of the at least two heating components 11 gradually increases along the up-down direction of the arrangement of the at least two heating components 11, wherein the heating components 11 are made of metal material, and the temperature coefficient of resistance is a relative change rate of the resistance of the heating components 11 when the temperature changes. Specifically, the resistance of the heating component changes with temperature, the thermal motion of free electrons in the metal intensifies with the increase of temperature, the increase of the collision frequency of the electrons leads to the increase of the resistance, and further causes the change of the resistance. And with the gradual increase of the temperature coefficient of resistance of the at least two heating components 11 arranged along the up-down direction, the heat generated by the at least two heating components 11 arranged along the up-down direction gradually increases, so that the heating efficiency of the at least two heating components 11 along the up-down direction gradually increases.

[0038] The heating components 11 gradually increase in temperature coefficient of resistance from top to bottom along the up-down direction of the arrangement of the at least two heating components 11, so that the resistance of the heating components 11 gradually increases, and further the heat generation gradually increases. Similarly taking two heating components 11 as an example, the upper heating component 11 gradually increases in resistance from top to bottom along the up-down direction of the arrangement in a manner of 1Ω, 2Ω, 3Ω, 4Ω, 5Ω…, and the lower heating component 11 gradually increases in resistance from top to bottom along the up-down direction of the arrangement in a manner of 6Ω, 7Ω, 8Ω, 9Ω, 10Ω…. Of course, the resistance of the heating components 11 from top to bottom can be formed in an incremental manner of mΩ, (m+1)Ω, (m+2)Ω, (m+3)Ω, (m+4)Ω…, where m can be a number greater than 0.

[0039] In the present application, the temperature coefficient of resistance is related to the material of the heating components 11, in other words, the at least two heating components 11 are made of different metal materials, in other words, one of the heating components 11 is made of the same material, and the heat generation of the heating component 11 from top to bottom is the same.

[0040] In an embodiment, two heating components 11 are taken as an example, wherein the upper heating component 11 is made of 316L stainless steel with a resistivity of 0.74 μΩm, and the lower heating component 11 is made of iron-chromium-aluminum or nickel-chromium alloy with a resistivity of 1.2 μΩm-1.4 μΩm.

[0041] In an embodiment of the present application, the at least two heating components 11 can work synchronously or asynchronously. When working synchronously, the at least two heating components 11 generate heat simultaneously. When working asynchronously, one of the at least two heating components 11 generates heat while the rest of the at least two heating components 11 stop working.

[0042] Of course, in some embodiments, after the at least two heating components 11 work asynchronously, the at least two heating components 11 can also work synchronously.

[0043] In the application, the at least two heating components 11 are connected in parallel, that is, the at least two heating components 11 are connected in parallel to the same external power supply, so that the at least two heating components 11 have the same working voltage, and under the condition of different resistivities, they have different heating efficiencies.

[0044] It can be understood that when it is necessary to control the at least two parallel heating components 11 to work asynchronously, a control switch can be arranged between each heating component 11 and the external power supply, and the control switch is used to control the on-off of the external power supply, so as to realize asynchronous control.

[0045] As shown in Figures 1-3 Fig. 2, the heating element 10 further comprises a common electrode 12 and at least two connecting electrodes 13, the at least two connecting electrodes 13 correspond to the at least two heating components 11 one by one, the one-to-one connecting electrode 13 is welded to the heating component 11, and the common electrode 12 is welded to each heating component 12. As shown in Figure 5 Fig. 2, the connecting electrode 13 is used to connect the first pole 51 of the external power supply 50, and the common electrode 12 is used to connect the second pole 52 of the external power supply 50.

[0046] In an embodiment, the external power supply 50 can be a rechargeable battery, wherein the first pole 51 can be the positive pole of the external power supply 50, and the second pole 52 can be the negative pole of the external power supply 50. Under the premise that the first pole 51 is connected to the connecting electrode 13 connected to the at least two heating components 11, and the second pole 52 is connected to the common electrode 12 connected to the at least two heating components 11 at the same time, the at least two heating components 11 and the external power supply 50 can be connected in parallel.

[0047] In the present application, under the condition of the same temperature (for example, the range of 20℃-1000℃) and along the up-down direction, the linear expansion coefficients of the at least two heating components 11 gradually decrease, and the linear expansion coefficient of the previous heating component 11 and the linear expansion coefficient of the next heating component 11 in the adjacent two heating components 11 differ by 3x10 -6 / ℃-6x10 -6 / ℃. The linear expansion coefficient refers to the change in length of a unit length of material when the temperature changes by 1℃ under constant temperature. Under constant temperature conditions, when the temperature changes, the material length is affected, which is caused by the change in the atomic structure of the solid material. When the temperature rises, the thermal motion of the atoms intensifies, which causes the crystal lattice to vibrate continuously, the distance between the atoms increases, and thus the length of the material also increases. Conversely, when the temperature decreases, the length of the material decreases.

[0048] It should be noted that since the heating component 11 is connected to the common electrode 12 and the connecting electrode 13 by welding, and the linear expansion coefficients of the adjacent two heating components 11 differ by a small value (3x10 -6 / ℃-6x10 -6 / ℃, therefore, the at least two heating components 11 arranged in up-down direction will not be unstable or even separated from the common electrode 12 and the connecting electrode 13 due to the large expansion difference at high temperature, so as to ensure the firmness between the welding points and the heating component 11 under high temperature environment and improve the reliability of the equipment.

[0049] Referring to Figure 3 , the heating component 11 has a plurality of mesh holes 110 arranged side by side, which can save the material of the heating component 11 while increasing the area of the heating component 11, so that the heating component 11 can fully contact with the liquid guide 20.

[0050] Continuing to refer to Figure 3As shown, the heating component 11 includes at least two heating lines 111, a plurality of first heat conductors 112, a plurality of second heat conductors 113, and two conductive parts 114. The at least two heating lines 111 are parallel and spaced apart from each other. The two conductive parts 114 are respectively connected to two ends of the heating lines 111 in the length direction. The heating lines 111 have a plurality of preset connection sites 1110 arranged along the length direction. The plurality of first heat conductors 112 are respectively connected between the plurality of preset connection sites 1110 of the adjacent two heating lines 111. The plurality of second heat conductors 113 are connected to the outside of the first heating line 111 and the last heating line 111. The first heating line 111 and the last heating line 111 are respectively the first heating line 111 and the last heating line 111 in the arrangement direction of the heating lines 111. The adjacent two first heat conductors 112 and the adjacent two heating lines 111 enclose a mesh 110.

[0051] The application also provides a heating assembly, referring to Figure 4 As shown, the heating assembly includes the heating piece 10 in the above embodiment, and further includes a liquid guide 20. The at least two heating components 11 in the heating piece 10 are wrapped in the installation channel 211 by the liquid guide 20. The liquid guide 20 is used to conduct the atomized liquid to the heating piece 10. The heating component 11 is used to heat the atomized liquid to generate aerosol.

[0052] In an embodiment, in order to facilitate the installation of the liquid guide 20, as Figure 4 and Figure 5 As shown, the heating assembly provided by the application further includes an atomization tube 40. The liquid guide 20 and the at least two heating components 11 wrapped in the liquid guide 20 are installed in the inside of the atomization tube 40. The atomization tube 40 is usually made of metal material, for example, the atomization tube 40 is made of stainless steel material. The liquid guide 20 of the heating piece 10 installed in the inside of the installation channel 211 is installed in the inside of the atomization tube 40. The atomization tube 40 is installed in the atomization channel 31. At least one liquid inlet 41 is arranged on the atomization tube 40, so that the atomized liquid stored in the liquid storage 30 can be conducted to the liquid guide 20 through the liquid inlet 41. One liquid inlet 41 corresponds to the adjacent two heating components 11. For example, the liquid inlet 11 is arranged on the atomization tube 40. The liquid inlet 11 at least includes the area opposite to or corresponding to the two heating components 11. It can be understood that the adjacent two heating components 11 include a heating area and a spacing area. The liquid inlet 11 is arranged corresponding to the spacing area and part of the heating area of the two heating components 11.

[0053] In the state that the liquid guide 20 contacts the liquid storage 30, the conduction rate of the atomized liquid is higher, and therefore, the atomizing pipe 40 is further provided with a notch 42. The liquid guide 20 is composed of a liquid guide body 21 and a protruding part 22, the protruding part 22 is formed on the outer surface of the liquid guide body 21 and protrudes outward along the radial direction of the liquid guide body 21. After the liquid guide 20 is installed inside the atomizing pipe 40, the protruding part 22 extends to the outside of the atomizing pipe 40 through the notch 42, and after the atomizing pipe 40 is installed into the atomizing channel 31, the protruding part 22 can extend to be in full contact with the liquid storage 30. In order to ensure the liquid guiding effect, the protruding part 22 is arranged on the outer surface of the liquid guide body 21 along the height direction of the liquid guide 20.

[0054] The application further provides an atomizing device comprising the heating assembly in the above embodiments, as shown in the drawings, the atomizing device further comprises an external power supply 50 and a suction nozzle 60, wherein the suction nozzle 60 has a suction nozzle channel 61 connected with the atomizing channel 31. The first pole 51 of the external power supply 50 is connected with the connecting electrode 13 connected with each heating component 11, and the second pole 52 of the external power supply 50 is connected with the common electrode 12 connected with each heating component 11, so that the heating components 11 are provided with the required power for heating through the external power supply 50, and the heating components 11 are connected in parallel. Figure 5

[0055] In actual use, the user performs suction through the suction nozzle 60, so that the external gas can enter into the atomizing channel 31 to be output together with the generated aerosol through the suction nozzle channel 61 for the user to use.

[0056] In summary, in the heating component, the heating assembly and the atomizing device provided by the application, since the liquid guiding efficiency of the liquid guide is gradually increased from top to bottom along the height direction thereof, when at least two heating components with gradually increased heating efficiency from top to bottom are adopted, the heating component corresponding to the part with higher liquid guiding efficiency generates greater heat, so that the part of the atomized liquid can be fully heated, thereby avoiding the problem of heat and liquid guiding quantity mismatch, and the problem of dry burning and burnt core can be prevented.

[0057] The above application of specific examples is used to describe the application, which is only used to help understand the application and does not limit the application. According to the idea of the application, those skilled in the art can make some simple deductions, modifications or substitutions.​

Claims

1. A heating element for atomizing an atomizing liquid conducted by a liquid guiding element, characterized in that, The heating element comprises at least two heating components, the at least two heating components are wrapped in the liquid guide, and the at least two heating components are arranged in an up-down direction. The heating efficiency of the at least two heating components gradually increases in the up-down direction.

2. The heating element of claim 1, wherein The resistivity of the at least two heating components gradually increases in the up-down direction.

3. The heating element of claim 1, wherein The at least two heating components can work synchronously or asynchronously.

4. The heating element of claim 3, wherein The at least two heating components are connected in parallel.

5. The heating element of claim 4, wherein the heating element is formed from a material having a thermal conductivity of at least 10 W / m-K. The heating element further comprises a common electrode and at least two connecting electrodes, the at least two connecting electrodes correspond to the at least two heating components one by one, the connecting electrodes and the heating components are welded, and the common electrode is welded with each heating component; the connecting electrodes are used to connect the first pole of the external power supply, and the common electrode is used to connect the second pole of the external power supply.

6. The heating element of claim 5, wherein, The linear expansion coefficients of the at least two heating components gradually decrease in the up-down direction under the same temperature condition. Among them, the linear expansion coefficient of the last said heat generating component and the linear expansion coefficient of the next heat generating component in the two adjacent said heat generating components differ by 3x10 -6 / ℃~6x10 -6 / ℃.

7. The heating element of claim 6, wherein the heating element is formed from a material having a thermal conductivity of at least 100 W / m-K. The heating component comprises at least two heating lines, a plurality of first heat conductors, a plurality of second heat conductors, and two conductive parts, the at least two heating lines are parallel and spaced apart, the two conductive parts are connected at both ends of the heating line in the length direction, the heating line has a plurality of preset connection positions arranged in the length direction, the plurality of first heat conductors are connected between the plurality of preset connection positions of the adjacent two heating lines, and the plurality of second heat conductors are connected outside the first heating line and the last heating line.

8. A heating assembly characterized by, The heating element comprises at least two heating components, the at least two heating components are wrapped in the liquid guide, and the at least two heating components are arranged in an up-down direction.

9. The heating assembly of claim 8, wherein, The heating element further comprises a common electrode and at least two connecting electrodes, the at least two connecting electrodes correspond to the at least two heating components one by one, the connecting electrodes and the heating components are welded, and the common electrode is welded with each heating component; the connecting electrodes are used to connect the first pole of the external power supply, and the common electrode is used to connect the second pole of the external power supply.

10. An atomising device characterised in that, The linear expansion coefficients of the at least two heating components gradually decrease in the up-down direction under the same temperature condition. The heating component comprises at least two heating lines, a plurality of first heat conductors, a plurality of second heat conductors, and two conductive parts, the at least two heating lines are parallel and spaced apart, the two conductive parts are connected at both ends of the heating line in the length direction, the heating line has a plurality of preset connection positions arranged in the length direction, the plurality of first heat conductors are connected between the plurality of preset connection positions of the adjacent two heating lines, and the plurality of second heat conductors are connected outside the first heating line and the last heating line. The heating element comprises at least two heating components, the at least two heating components are wrapped in the liquid guide, and the at least two heating components are arranged in an up-down direction. The heating element further comprises a common electrode and at least two connecting electrodes, the at least two connecting electrodes correspond to the at least two heating components one by one, the connecting electrodes and the heating components are welded, and the common electrode is welded with each heating component; the connecting electrodes are used to connect the first pole of the external power supply, and the common electrode is used to connect the second pole of the external power supply.

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