Heating element, atomizing core and atomizing device

Abstract

The utility model discloses a heating element, an atomizing core and an atomizing device.In the heating element, a first pin and a second pin extend in the first direction and are arranged at an interval in the second direction; the heating unit is in a periodic curve shape, and two ends of the heating unit are respectively connected with the first pin and the second pin; wherein under the condition that the number of the heating units is at least two, the at least two heating units are arranged at intervals in the first direction, and the shapes of the at least two heating units are symmetrical. The heating unit is in the shape of a periodic curve, the structure of the heating unit is relatively uniform, the mechanical strength of the heating unit is relatively high, the heating unit cannot deform in the repeated heating-cooling process, the heating unit is good in heating uniformity, fracture caused by stress concentration is not prone to occurring, and the service life of the heating unit is prolonged. Therefore, the heating element provided by the embodiment of the utility model has the advantages of being good in heating uniformity, long in service life and high in power.

Description

TECHNICAL FIELD

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

[0002] The atomization device forms an aerosol by heating an aerosol generating substrate rather than by combustion, that is, the aerosol generating substrate generates an aerosol after being heated. A heating element is usually used in the atomization device to heat the aerosol generating substrate. However, the current heating element has the problem of uneven heating, which is prone to overheat the core. SUMMARY

[0003] The present application provides a heating element, an atomization core and an atomization device, which are used to solve or partially solve the technical problem of uneven heating of the heating element.

[0004] In one embodiment, a heating element is provided, which comprises a first pin, a second pin and at least one heating unit; the first pin and the second pin extend along a first direction and are arranged at intervals in a second direction; the heating unit has a shape of a periodic curve, and two ends thereof are connected to the first pin and the second pin, respectively; wherein, in the case that the heating unit has at least two, the at least two heating units are arranged at intervals along the first direction and are symmetrical in shape.

[0005] In one of the embodiments, the heating unit comprises a plurality of sub-units and a plurality of first connecting portions; the plurality of sub-units are arranged at intervals in the second direction, and the first connecting portions are connected between adjacent two sub-units; the sub-unit has a curved portion which is smoothly transitioned.

[0006] In one of the embodiments, the sub-unit has a shape of a "U" letter, a shape of a "Ω" letter, or a shape of a half wave.

[0007] In one of the embodiments, the sub-unit comprises a first extension section, a second extension section and a third extension section, which are connected in sequence, and the connection between the first extension section and the second extension section and the connection between the second extension section and the third extension section form the curved portion; in each sub-unit, the end of the first extension section away from the second extension section is connected to the end of one first connecting portion, the end of the third extension section away from the second extension section is connected to the end of another first connecting portion, and the first connecting portions are arranged along the second direction; the connection between the first extension section and the first connecting portion and the connection between the third extension section and the first connecting portion are smoothly transitioned.

[0008] In one of the embodiments, the first extending section and the third extending section extend along the first direction, the second extending section extends along the second direction, the first extending section, the second extending section and the third extending section are connected to form a quasi-rectangular structure, the first extending section, the second extending section and the third extending section are three sides of the quasi-rectangular structure; and / or, the second extending section extends along the second direction, the first extending section, the second extending section and the third extending section are connected to form a quasi-trapezoidal structure, the first extending section and the third extending section are the waist of the quasi-trapezoidal structure respectively, and the second extending section is the lower base of the quasi-trapezoidal structure.

[0009] In one of the embodiments, the heating unit further comprises a second connecting part and a third connecting part, the second connecting part and the third connecting part are symmetrically arranged on two sides of the plurality of sub-units; a first end of the second connecting part is bent towards the first pin and connected with the first pin, a second end of the second connecting part is connected with the first extending section or the third extending section closest to the first pin through the first connecting part, and the second connecting part is symmetrically arranged with the first extending section or the third extending section closest to the first pin; a first end of the third connecting part is bent towards the second pin and connected with the second pin, a second end of the third connecting part is connected with the first extending section or the third extending section closest to the second pin through the first connecting part, and the second connecting part is symmetrically arranged with the first extending section or the third extending section closest to the second pin.

[0010] In one of the embodiments, in a third direction perpendicular to the first direction and the second direction, the thickness of the heating element ranges from 0.05mm to 0.15mm; and / or, the width of the curve ranges from 0.08mm to 0.5mm.

[0011] In one of the embodiments, the heating element further comprises a first conductive part and a second conductive part, the first conductive part and the second conductive part are both in a long strip shape, the first conductive part extends along the first direction and is connected with the first pin, and the second conductive part extends along the first direction and is connected with the second pin; one end of the heating unit is connected with the first pin through the first conductive part, and the other end of the heating unit is connected with the second pin through the second conductive part.

[0012] In one of the embodiments, a kind of atomizing core is further provided, the atomizing core includes liquid storage element and the heating element described above, and the liquid storage element is wrapped in the outer periphery of at least one heating unit of the heating element.

[0013] In an embodiment, an atomization device is also provided, which comprises the atomization core and a power supply assembly for supplying power to the atomization core.

[0014] According to the heating element in the above embodiment, the heating unit is in the shape of a periodic curve, the structure of the heating unit is relatively uniform, and the mechanical strength is relatively high, and the heating unit will not deform in repeated heating-cooling processes, the heating unit has good heating uniformity, and is not prone to fracture caused by stress concentration, and local overheating caused by affecting the heat distribution of the heating wire, thereby affecting the service life of the heating element; moreover, when the heating unit is in the shape of a periodic curve, the length is relatively long, that is, the heating area of the heating unit is increased, so that the heating element has a large power. Therefore, the heating element in the embodiment has the advantages of good heating uniformity, long service life, and large power. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure perspective view of the first embodiment of the heating element in a planar state;

[0016] Figure 2 It is a structure perspective view of the first embodiment of the heating element and the liquid storage element;

[0017] Figure 3 It is a front view of part of the structure of the first embodiment of the heating element;

[0018] Figure 4 It is a structure perspective view of the second embodiment of the heating element in a planar state;

[0019] Figure 5 It is a structure perspective view of the second embodiment of the heating element and the liquid storage element;

[0020] Figure 6 It is a front view of part of the structure of the second embodiment of the heating element;

[0021] Figure 7 It is a simulation result schematic diagram of the first embodiment of the heating element;

[0022] Figure 8 It is a simulation result schematic diagram of the second embodiment of the heating element;

[0023] Figure 9 It is a simulation result schematic diagram of a conventional heating element.

[0024] In which the reference signs are as follows:

[0025] 10, first pin; 20, second pin;

[0026] 30, heating unit;

[0027] 31, subunit; 311, first extension section; 312, second extension section; 313, third extension section;

[0028] 32, first connecting portion; 33, second connecting portion; 34, third connecting portion;

[0029] 41, first conductive portion; 42, second conductive portion;

[0030] 50, liquid storage member;

[0031] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0032] The application will be further described below in connection with the drawings. Like reference numerals are used to indicate similar elements in different embodiments. In the following description, numerous specific details are described to provide a thorough understanding of the application. However, those skilled in the art will recognize that the application can be practiced without these specific details. In other instances, well-known structures have not been described in detail in order to avoid obscuring the application. In addition, some of the features described in this specification are presented as separate embodiments. However, one of ordinary skill in the art will recognize that these features can be implemented in a single embodiment.

[0033] In addition, the features described in the specification, operations or characteristics 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 sequentially adjusted or adjusted in a manner that is obvious to those skilled in the art. Therefore, the order in the specification and the drawings is only for the purpose of clearly describing a certain embodiment, and does not mean that it is the necessary order, unless otherwise stated that a certain order must be followed.

[0034] The serial numbers of the components in this paper, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any order or technical meaning. Unless otherwise specified, "connection", "coupling" in this application includes direct and indirect connection and coupling.

[0035] The embodiment of the application provides a heating element, which is used in an atomization device to heat an aerosol generating substrate in the atomization device to form an aerosol when the atomization device is used.

[0036] Reference Figures 1 to 6As shown, the heating element includes a first pin 10, a second pin 20, and at least one heating unit 30; wherein the first pin 10 and the second pin 20 extend along a first direction X and are arranged at intervals in a second direction Y; the heating unit 30 has one or at least two, in the case of at least two, the at least two heating units 30 are arranged at intervals along the first direction X and are symmetrical in shape; the heating unit 30 is in the shape of a periodic curve, and the two ends are respectively connected with the first pin 10 and the second pin 20.

[0037] Further referring to Figure 1 and Figure 4 As shown, the first pin 10 and the second pin 20 extend along the first direction X, and the first pin 10 and the second pin 20 are arranged at intervals in the second direction Y. The first pin 10 and the second pin 20 are arranged side by side and parallel, and the first pin 10 and the second pin 20 are located at the two ends of the heating element in the second direction Y. The first pin 10 and the second pin 20 are used to connect the power supply component, thereby providing the heating element with the required power for work.

[0038] In the embodiment of the present application, the heating unit 30 is the part of the heating element that is mainly used for heating. One end of the heating unit 30 is connected with the first pin 10, and the other end of the heating unit 30 is connected with the second pin 20. The heating unit 30 is connected with the power supply component through the first pin 10 and the second pin 20 to obtain the required power during work. The number of heating units 30 in the heating element is set according to the use requirement, for example, the heating unit 30 has one, and for example, referring to Figure 1 and Figure 4 which shows that the heating unit 30 has two, and the two heating units 30 are arranged at intervals along the first direction X.

[0039] In the heating element of the embodiment of the present application, the heating unit 30 is in the shape of a periodic curve. The structure of the heating unit 30 is relatively uniform, and the mechanical strength is relatively high. The heating unit will not deform in the repeated heating-cooling process. The heating unit 30 has good heating uniformity and is not prone to fracture caused by stress concentration, and the local overheating caused by the influence of the heat distribution of the heating wire, thereby affecting the service life of the heating element. Moreover, when the heating unit 30 is in the shape of a periodic curve, its length is relatively long, that is, the heating area of the heating unit 30 is increased, so that the heating element has a large power. Therefore, the heating element of the embodiment of the present application has the advantages of good heating uniformity, long service life, and large power.

[0040] Further, the heating element has good heating uniformity. The resistance in the heating element changes with temperature. The temperature of the heating element can be accurately controlled.

[0041] In one embodiment, referring to Figure 3 andFigure 6 As shown in the figure, the heating unit 30 includes a plurality of sub-units 31 and a plurality of first connecting portions 32; the plurality of sub-units 31 are arranged at intervals in the second direction Y, and the first connecting portion 32 is connected between two adjacent sub-units 31; the sub-unit 31 has a curved portion that is smoothly transitioned.

[0042] In the above structure of the embodiment of the present application, the shapes of the sub-units 31 are the same, the plurality of sub-units 31 are arranged at intervals in the second direction Y, and the shape of the heating element is relatively regular, being a shape of a regular periodic curve, and the heating unit 30 has the advantage of good heating uniformity. Moreover, the curved portion is smoothly transitioned, which can make the current flow smoother, the current distribution is relatively uniform, the resistance change is smaller, and the electric power density is closer to the average level, thereby making the heating of the heating unit 30 relatively uniform.

[0043] It should be noted that, in Figure 3 In the example shown in the figure, the sub-unit 31 is in the shape of a "U" letter; in Figure 6 In the example shown in the figure, the sub-unit 31 is in the shape of an "Ω" letter; in other embodiments, the sub-unit 31 can also be other shapes with curved portions, for example, in the shape of a half wave, and is not limited to the embodiments and the figures of the present application.

[0044] In one embodiment, referring to Figure 3 and Figure 6 As shown in the figure, the sub-unit 31 includes a first extension section 311, a second extension section 312, and a third extension section 313, which are connected in sequence, and the connection between the first extension section 311 and the second extension section 312 and the connection between the second extension section 312 and the third extension section 313 form a curved portion; in each sub-unit 31, the end of the first extension section 311 away from the second extension section 312 is connected to the end of one first connecting portion 32, and the end of the third extension section 313 away from the second extension section 312 is connected to the end of another first connecting portion 32, and the first connecting portion 32 is arranged along the second direction Y; the curved portion, the connection between the first extension section 311 and the first connecting portion 32, and the connection between the third extension section 313 and the first connecting portion 32 are all smoothly transitioned.

[0045] Referring to Figure 3 and Figure 6As shown, in each of the sub-units 31, the first extension section 311, the second extension section 312 and the third extension section 313 are arranged in the second direction Y in sequence, and the first extension section 311, the second extension section 312 and the third extension section 313 are sequentially connected to form a structure with two bending portions. Specifically, the first end of the first extension section 311 is connected with the end of one first connecting portion 32, the second end of the first extension section 311 is connected with the first end of the second extension section 312, the second end of the second extension section 312 is connected with the first end of the third extension section 313, and the second end of the third extension section 313 is connected with the end of another first connecting portion 32; and the second end of the first extension section 311 and the first end of the second extension section 312 form a first bending portion, and the second end of the second extension section 312 and the first end of the third extension section 313 form a second bending portion.

[0046] In the embodiments of the present application, the bending portions, the connections between the first extension section 311 and the first connecting portion 32, and the connections between the third extension section 313 and the first connecting portion 32 are all smoothly transitioned, which can make the current flow smoother, the current distribution relatively uniform, the resistance change smaller, and the electric power density closer to the average level, thereby making the heat generation of the heat generation unit 30 relatively uniform.

[0047] Further, the smoothly transitioned portions can be in a circular arc structure or the like.

[0048] In an embodiment, referring to Figs. 1 and 2, Figure 1 and Figure 3 As shown, the first extension section 311 and the third extension section 313 extend along the first direction X, the second extension section 312 extends along the second direction Y, the first extension section 311, the second extension section 312 and the third extension section 313 are connected to form a quasi-rectangular structure, and the first extension section 311, the second extension section 312 and the third extension section 313 are three sides of the quasi-rectangular structure. The above structure of the embodiments of the present application has the advantages of regular structure and convenient processing of the sub-units 31.

[0049] In an embodiment, referring to Figs. 1 and 2, Figure 4 and Figure 6 As shown, the second extension section 312 extends along the second direction Y, the first extension section 311, the second extension section 312 and the third extension section 313 are connected to form a quasi-trapezoidal structure, the first extension section 311 and the third extension section 313 are the waists of the quasi-trapezoidal structure respectively, and the second extension section 312 is the lower base of the quasi-trapezoidal structure. The above structure of the embodiments of the present application has the advantages of regular structure and convenient processing of the sub-units 31.

[0050] In an embodiment, referring to Figs. 1 and 2, Figure 3 and Figure 6As shown, the heating unit 30 further comprises a second connecting part 33 and a third connecting part 34, which are symmetrically arranged on both sides of the plurality of sub-units 31; the first end of the second connecting part 33 is bent towards the first pin 10 and connected with the first pin 10, and the second end of the second connecting part 33 is connected with the first extension segment 311 or the third extension segment 313 closest to the first pin 10 through the first connecting part 32, and the second connecting part 33 is symmetrically arranged with the first extension segment 311 or the third extension segment 313 closest to the first pin 10; the first end of the third connecting part 34 is bent towards the second pin 20 and connected with the second pin 20, and the second end of the third connecting part 34 is connected with the first extension segment 311 or the third extension segment 313 closest to the second pin 20 through the first connecting part 32, and the second connecting part 33 is symmetrically arranged with the first extension segment 311 or the third extension segment 313 closest to the second pin 20.

[0051] Further referring to Figure 3 Further explanation, the second connecting part 33 and the third connecting part 34 are arranged on both sides of the plurality of sub-units 31, the second connecting part 33 is located between the first pin 10 and the plurality of sub-units 31, the third connecting part 34 is located between the second pin 20 and the plurality of sub-units 31, and the second connecting part 33 and the third connecting part 34 are symmetrically arranged.

[0052] The first end of the second connecting part 33 is a bent structure, and the first end of the second connecting part 33 is bent towards the first pin 10 and connected with the first pin 10; the second end of the second connecting part 33 is connected with one end of the first connecting part 32, and the other end of the first connecting part 32 is connected with the end of the leftmost first extension segment 311 away from the second extension segment 312, that is, the second end of the second connecting part 33 is connected with the leftmost first extension segment 311 through the first connecting part 32, and the second connecting part 33 is symmetrically arranged with the leftmost first extension segment 311.

[0053] The first end of the third connecting part 34 is a bent structure, and the first end of the third connecting part 34 is bent towards the second pin 20 and connected with the second pin 20; the second end of the third connecting part 34 is connected with one end of the first connecting part 32, and the other end of the first connecting part 32 is connected with the end of the rightmost third extension segment 313 away from the second extension segment 312, that is, the second end of the third connecting part 34 is connected with the rightmost third extension segment 313 through the first connecting part 32, and the third connecting part 34 is symmetrically arranged with the rightmost third extension segment 313.

[0054] In this embodiment, multiple sub-units 31 are connected between the first pin 10 and the second pin 20 via the second connecting portion 33 and the third connecting portion 34. The first end of the second connecting portion 33, the connection point between the second connecting portion 33 and the first connecting portion 32, the connection point between the first connecting portion 32 and the leftmost first extension segment 311, the first end of the third connecting portion 34, the connection point between the third connecting portion 34 and the first connecting portion 32, and the connection point between the first connecting portion 32 and the rightmost third extension segment 313 are all smoothly transitioned. This ensures smoother current flow, more uniform current distribution, smaller resistance variations, and a power density closer to the average level, thereby resulting in more uniform heating of the heating unit 30.

[0055] In one embodiment, reference is made to... Figure 1 and Figure 4 As shown, in the third direction Z, which is perpendicular to the first direction X and the second direction Y, the thickness of the heating element ranges from 0.05 mm to 0.15 mm. At this thickness, the heating element meets the power density requirements of the heating element.

[0056] It is understandable that the specific thickness of the heating element is set according to the usage requirements. For example, the thickness of the heating element is 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.10mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, and multiple values ​​between the above values.

[0057] In one embodiment, the width of the curve ranges from 0.08 mm to 0.5 mm. When the width of the curve in this embodiment is within the above range, the heating unit 30 has the advantage of a larger area. (Refer to...) Figure 3 As shown, in the curve, the width of the first extension segment 311 is the distance from the left edge to the right edge of the first extension segment 311, and the width of the second extension segment 312 is the distance from the upper edge to the lower edge of the second extension segment 312.

[0058] Understandably, the specific width of the curve is set according to the usage requirements. For example, the curve width can be 0.08mm, 0.09mm, 0.10mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, or multiple values ​​between the above.

[0059] In one embodiment, reference is made to... Figure 1 and Figure 4As shown, the heating element further comprises a first conductive part 41 and a second conductive part 42, both of which are in a long strip shape, the first conductive part 41 extends along the first direction X and is connected with the first pin 10, and the second conductive part 42 extends along the first direction X and is connected with the second pin 20; one end of the heating unit 30 is connected with the first pin 10 through the first conductive part 41, and the other end of the heating unit 30 is connected with the second pin 20 through the second conductive part 42.

[0060] In the embodiments of the present application, the first conductive part 41 and the second conductive part 42 are both in a long strip shape, the first conductive part 41 has more connection area with the heating unit 30 relative to the first pin 10, so that the connection between the first conductive part 41 and the heating unit 30 is relatively simple, thereby facilitating the connection of one end of the heating unit 30 with the first pin 10 through the first conductive part 41. Similarly, the second conductive part 42 has more connection area with the heating unit 30 relative to the second pin 20, so that the connection between the second conductive part 42 and the heating unit 30 is relatively simple, thereby facilitating the connection of the other end of the heating unit 30 with the second pin 20 through the first conductive part 41.

[0061] In an embodiment, the heating element is made of a material that meets the use requirements, for example, the heating element is a component made of iron-chromium-aluminum alloy, nickel-chromium-iron alloy or the like. Both iron-chromium-aluminum alloy and nickel-chromium-iron alloy have high electrical conductivity and high temperature resistance. The heating element in the embodiments of the present application has the advantage of good heating uniformity, which can avoid oxidation and corrosion of the heating element caused by local overheating, thereby avoiding performance degradation and shortening of service life of the heating wire. Therefore, the heating element in the embodiments of the present application also has the advantages of excellent heating performance and long service life.

[0062] In an embodiment, the resistance of the heating element is calculated using simulation software, the electrical power density distribution of the heating element is calculated, the reinforcing structure is designed, and the heating area is increased. The heating element is used in existing ammunition changing products, and the maximum power of a single heating element can be relatively high, for example, up to 40W.

[0063] Referring to Figures 7 to 9 As shown, a simulation result diagram is shown. Referring to Figure 7 and Figure 8 As shown, the simulation diagrams of the power density of the heating elements in the first and second embodiments of the present application are shown. Therefore, the heating element has the advantages of high heating and good heating performance. Moreover, the maximum power density at the corner (the corner includes the curved part) of the heating element is 5.71e10 and 6.18e10 respectively, and overheating is not easy to occur. In summary, the heating element in the embodiments of the present application has the advantages of uniform overall temperature rise, small temperature difference, and high energy utilization rate.

[0064] Further referring to Figure 9, which shows a simulation result diagram of a conventional heating element, in which the center of the conventional heating element has two conductive paths to heat, and the two conductive paths heat and diffuse heat to the upper and lower ends. The highest power density of the corner of the conventional heating element reaches 1.43e12, which is prone to overheating and leads to a burnt wick. Moreover, the heating of the conventional heating element is uneven, only two conductive paths heat, the temperature of the two conductive paths rises quickly and is high, and the parts of the conventional heating element other than the two conductive paths heat through heat conduction, the temperature rises slowly and is low, which will lead to low energy utilization rate of the conventional heating element.

[0065] The simulation diagram of the heating element of the first embodiment and the second embodiment of the present application shown in Figure 7 and Figure 8 is compared with the simulation diagram of the conventional heating body shown in Figure 9 It is not difficult to see that the two embodiments of the present application have higher power density, higher energy utilization rate, better heating uniformity, and higher heating area, which can solve the problem of burnt wick when high power is used in the range of 0.7Ω-0.9Ω resistance in actual application.

[0066] The present application provides an atomizing core, characterized in that the atomizing core comprises a liquid storage element 50 and the above-mentioned heating element, as shown in Figure 2 and Figure 5 The liquid storage element 50 is wrapped around the outer periphery of at least one heating unit 30 of the heating element.

[0067] As shown in Figure 2 and Figure 5 , the heating element is rolled into a cylindrical structure when in use, and the liquid storage element 50 is wrapped around the outer periphery of the cylindrical structure. Among them, the liquid storage element 50 is wrapped around the outer periphery of all heating units 30 to maximize the contact with the heating units 30, which helps the aerosol generating substrate in the liquid storage element 50 to form aerosol.

[0068] Of course, in actual application, the heating element can also be in an unrolled state as shown in Figure 1 and Figure 4 . According to the use requirement, the heating element can be bent, which is not specifically limited in the present application.

[0069] The atomizing core of the present application uses the above-mentioned heating element, which has the advantages of good heating uniformity, long service life, high power, and high energy utilization rate, so that the aerosol formed by the atomizing core is uniform, the service life of the atomizing core is longer, and the problem of overheating and burnt wick is less likely to occur.

[0070] The application further provides an atomization device, which comprises the power supply assembly and the atomization core. The power supply assembly is configured to supply power to the atomization core, so that the atomization core can atomize the aerosol generating substrate to form an aerosol, thereby realizing the function of the atomization device.

[0071] In the embodiments of the application, the heating element, the atomization core and the atomization device can be mutually referred to, and have the same or similar beneficial effects as any of the aforementioned heating elements, atomization cores. In order to avoid repetition, this will not be repeated here.

[0072] The above application of specific examples to the application is described, which is only used to help understand the application and does not limit the application. For those skilled in the art to which the application belongs, according to the idea of the application, a number of simple deductions, deformations or substitutions can be made.

Claims

1. A heat generating member, characterized by comprising: The heating element comprises, a first pin and a second pin, the first pin and the second pin extend along a first direction and are arranged in a second direction; at least one heating unit, the heating unit is in the shape of a periodic curve, and two ends thereof are connected with the first pin and the second pin respectively; wherein, in the case that the heating unit has at least two, the at least two heating units are arranged in the first direction and are symmetrical in shape.

2. The heat generating member according to claim 1, wherein The heating unit comprises a plurality of sub-units and a plurality of first connecting portions; the plurality of sub-units are arranged in the second direction, and the first connecting portions are connected between adjacent two sub-units; the sub-units have a curved portion which is smoothly transitioned.

3. The heat generating member according to claim 2, wherein The sub-units are in the shape of a "U" letter, the shape of an "Ω" letter, or the shape of a half wave.

4. The heat generating member according to claim 2, wherein The sub-units comprise a first extension section, a second extension section, and a third extension section, which are sequentially connected, and the connection between the first extension section and the second extension section and the connection between the second extension section and the third extension section form the curved portion; in each of the sub-units, the end of the first extension section away from the second extension section is connected with the end of one first connecting portion, and the end of the third extension section away from the second extension section is connected with the end of another first connecting portion, and the first connecting portions are arranged in the second direction; the connection between the first extension section and the first connecting portion and the connection between the third extension section and the first connecting portion are smoothly transitioned.

5. The heat generating member according to claim 4, wherein The first extension section and the third extension section both extend along the first direction, the second extension section extends along the second direction, the first extension section, the second extension section, and the third extension section are connected in a rectangular-like structure, the first extension section, the second extension section, and the third extension section are three sides of the rectangular-like structure; and / or, the second extension section extends along the second direction, the first extension section, the second extension section, and the third extension section are connected in a trapezoidal-like structure, the first extension section and the third extension section are the waist of the trapezoidal-like structure respectively, and the second extension section is the lower base of the trapezoidal-like structure.

6. The heat generating member according to claim 4, wherein The heating unit further comprises a second connecting portion and a third connecting portion, the second connecting portion and the third connecting portion are symmetrically arranged on both sides of the plurality of sub-units; the first end of the second connecting portion is bent towards the first pin and connected with the first pin, the second end of the second connecting portion is connected with the first extension section or the third extension section closest to the first pin through the first connecting portion, and the second connecting portion and the first extension section or the third extension section closest to the first pin are symmetrically arranged; The first end of the third connecting part is bent towards the second pin and connected with the second pin, and the second end of the third connecting part is connected with the first extension section or the third extension section closest to the second pin through the first connecting part, and the second connecting part is symmetrically arranged with the first extension section or the third extension section closest to the second pin.

7. The heat generating member according to any one of claims 1 to 6, wherein In a third direction perpendicular to the first direction and the second direction, the thickness of the heat generating member ranges from 0.05mm to 0.15mm; and / or, The width of the curve ranges from 0.08mm to 0.5mm.

8. The heat generating member according to any one of claims 1 to 6, wherein The heat generating member further comprises a first conductive part and a second conductive part, both of which are in a long strip shape, the first conductive part extends along the first direction and is connected with the first pin, and the second conductive part extends along the first direction and is connected with the second pin. One end of the heat generating unit is connected with the first pin through the first conductive part, and the other end of the heat generating unit is connected with the second pin through the second conductive part.

9. An atomizing core characterized by, The atomization core comprises a liquid storage member and the heat generating member according to any one of claims 1-8, and the liquid storage member is wrapped around the outer periphery of at least one heat generating unit of the heat generating member.

10. An atomising device characterised in that, The atomization device comprises a power supply assembly and the atomization core according to claim 9, and the power supply assembly is used to provide power to the atomization core.

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