Electronic atomization device, atomizer thereof and heating component

Abstract

The present invention relates to an electronic atomization device, an atomizer thereof, and a heating component. The heating component includes a porous body and a heating element. The porous body includes a first surface and a second surface that are oppositely arranged. The first surface is an atomization surface for mounting the heating element. The second surface is recessed inward to form a liquid guiding hole for accommodating a liquid guiding element. The liquid guiding hole has a bottom surface. The projection area of the bottom surface of the liquid guiding hole on the atomization surface is a core atomization area, and the core atomization area is a concentrated distribution area of the heating element. During normal operation, after the heating element is heated for a preset time, the first average temperature of the core atomization area is higher than the second average temperature of the entire atomization surface. When the heating component is heating, since the temperature of the core atomization area is relatively high, the liquid medium volatilizes relatively fast, so that the liquid medium outside the core atomization area can flow towards the core atomization area and gather towards the core atomization area, thereby avoiding liquid leakage.

Description

Technical Field

[0001] The present invention relates to the field of smoker supplies, and more particularly to an electronic atomization device, an atomizer thereof, and a heating component. Background Art

[0002] An electronic cigarette, also known as a virtual cigarette or an electronic atomization device, is used as a substitute for cigarettes, mostly for smoking cessation. An electronic cigarette has a similar appearance and taste to a cigarette, but generally does not contain other harmful components such as tar and suspended particles in cigarettes.

[0003] An electronic cigarette mainly consists of an atomizer and a power supply device. The atomizer generally includes a heating component that heats and atomizes the e-liquid after being energized. The heating component generally includes a porous structure for guiding the liquid and a heating element that cooperates with the porous structure. In the existing heating component, the oil supply area is usually larger than the atomization area. When the air exchange is smooth, liquid leakage is likely to occur, that is, the e-liquid leaks, resulting in waste of the e-liquid, poor user experience, and even the e-liquid may contaminate the electronic components, thus causing the electronic components to malfunction. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an improved electronic atomization device, an atomizer thereof, and a heating component in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by the present invention to solve its technical problems is to construct a heating component for an atomizer, including a porous body for sucking a liquid medium and a heating element for heating and atomizing the liquid medium adsorbed to the porous body. The porous body includes a first surface and a second surface that are oppositely arranged, and the first surface is an atomization surface for mounting the heating element;

[0006] The second surface is recessed inward to form a liquid guiding hole for accommodating a liquid guiding element. The liquid guiding hole has a bottom surface, and the projection area of the bottom surface of the liquid guiding hole on the atomization surface is a core atomization area, and the core atomization area is a concentrated distribution area of the heating element;

[0007] During normal operation, after the heating element is heated for a preset time, the first average temperature of the core atomization area is higher than the second average temperature of the entire atomization surface.

[0008] In some embodiments, the first average temperature is 120-200 °C, and the first average temperature is more than 20 °C higher than the second average temperature.

[0009] In some embodiments, the width of the heating element along the extending direction is consistent, and the core atomization area is located at the center position of the atomization surface.

[0010] In some embodiments, the atomizing surface has a first width L1, the core atomizing region has a second width L2 along the extending direction of the first width L1, and the second width L2 is 30%-85% of the first width L1.

[0011] In some embodiments, the second width L2 is 63%-70% of the first width L1.

[0012] In some embodiments, 40-90% of the heating element is distributed within the core atomizing region.

[0013] In some embodiments, the porous body includes a first substrate and a second substrate in a stepped shape, the cross-sectional area of the first substrate is larger than that of the second substrate, and one side surface of the first substrate away from the second substrate forms the atomizing surface.

[0014] In some embodiments, the heating assembly further includes a first electrode and a second electrode respectively connected to two ends of the heating element, and the first electrode and the second electrode are diagonally arranged on the atomizing surface.

[0015] In some embodiments, the heating element is symmetrically arranged with respect to the center point of the atomizing surface. The heating element includes a first straight section, a second straight section, and a connecting section connecting the first straight section and the second straight section in series. The first straight section is parallel to the second straight section;

[0016] The connecting section includes a first arc section connected to the first straight section, a second arc section connected to the second straight section, and a first inclined straight section connecting the first arc section and the second arc section in series. The first arc section and the second arc section are located on the same circumference, and the first arc section and the second arc section are close to or located at the edge of the core atomizing region.

[0017] In some embodiments, the heating element is symmetrically arranged with respect to the center point of the atomizing surface. The heating element includes a first straight section, a second straight section, and a connecting section connecting the first straight section and the second straight section in series. The first straight section is parallel to the second straight section;

[0018] The connecting section includes at least one third straight section and at least one first bending section connected to the at least one third straight section in series, and the third straight section is perpendicular to the first straight section.

[0019] In some embodiments, the heating element is symmetrically arranged with respect to the center point of the atomizing surface. The heating element includes a first straight section, a second straight section, and a connecting section connecting the first straight section and the second straight section in series. The first straight section is parallel to the second straight section;

[0020] The connecting section includes at least one second inclined straight section, at least one third inclined straight section, and at least one fourth straight section connecting the at least one second inclined straight section and the at least one third inclined straight section in series. The fourth straight section is parallel to the first straight section. The second inclined straight section and the third inclined straight section are arranged alternately, and the included angles between the second inclined straight section, the third inclined straight section and the fourth straight section are equal.

[0021] The present invention also provides an atomizer, including a heating component as described in any one of the above, a liquid storage cavity for storing a liquid medium, and a liquid guiding element connecting the liquid storage cavity and the heating component.

[0022] The present invention also provides an electronic atomization device, including a power supply device and the atomizer as described above. The power supply device is electrically connected to the atomizer.

[0023] Implementing the present invention has at least the following beneficial effects: When the heating component in the present invention is heating, due to the relatively high temperature in the core atomization area, the liquid medium volatilizes relatively fast, so that the liquid medium outside the core atomization area can flow towards the core atomization area and gather towards the core atomization area, thereby avoiding the situation of liquid leakage. When the user inhales the mist, no liquid droplets will be inhaled, improving the user experience. Description of the Drawings

[0024] The present invention will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0025] Figure 1 is a three-dimensional structure schematic diagram of a heating component in some embodiments of the prior art;

[0026] Figure 2 is a three-dimensional structure schematic diagram of a heating component in some embodiments of the present invention;

[0027] Figure 3 is a three-dimensional structure schematic diagram of the heating component from another angle in some embodiments of the present invention;

[0028] Figure 4 is a top view of the heating component in some embodiments of the present invention;

[0029] Figure 5 is Figure 4 the temperature field distribution diagram of the shown heating component;

[0030] Figure 6 is Figure 4 the structural schematic diagram of the first alternative of the heating element of the shown heating component;

[0031] Figure 7 is Figure 6 the temperature field distribution diagram of the shown heating component;

[0032] Figure 8 Is Figure 4 A schematic structural diagram of the second alternative of the heating element of the heating component shown;

[0033] Figure 9 Is Figure 8 The temperature field distribution diagram of the heating component shown;

[0034] Figure 10 Is Figure 4 A schematic structural diagram of the third alternative of the heating element of the heating component shown;

[0035] Figure 11 Is Figure 1 、 Figure 4 、 Figure 10 The stress comparison diagram of the heating component shown;

[0036] Figure 12 Is Figure 1 、 Figure 4 、 Figure 10 The displacement comparison diagram of the heating component shown;

[0037] Figure 13 Is a schematic structural diagram of an electronic cigarette in some embodiments of the present invention;

[0038] Figure 14 Is a schematic cross-sectional structural diagram of a heating component, a liquid guiding element, and a liquid storage tank in some embodiments of the present invention;

[0039] Figure 15 Is a schematic structural diagram of a heating component and a liquid guiding element in some embodiments of the present invention. Detailed Description of the Invention

[0040] For a clearer understanding of the technical features, objectives, and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0041] Figures 2 - 4 Shown is a heating component 10 in some embodiments of the present invention. The heating component 10 can be applied to an atomizer to heat and atomize liquid media such as e-liquid and liquid medicine. It may include a porous body 11 for sucking the liquid medium and a heating element 12a for heating and atomizing the liquid medium adsorbed into the porous body 11. The porous body 11 includes a first surface and a second surface 1121 arranged opposite to each other. Among them, the first surface is an atomizing surface 1111 for installing the heating element 12a, and the second surface 1121 is recessed inward to form a liquid guiding hole 1122 for accommodating a liquid guiding element 20 (see Figure 15 ). The shape of the liquid guiding hole 1122 is not limited to a circular hole, and can also be other shapes such as a square hole or a rectangular hole.

[0042] In some embodiments, the porous body 11 may include a first substrate 111 and a second substrate 112 in a stepped shape, and the cross-sectional area of the first substrate 111 is larger than that of the second substrate 112, so that a positioned step is formed between the first substrate 111 and the second substrate 112, facilitating the installation and positioning of the heating component 10. Preferably, an atomization surface 1111 is formed on one side of the first substrate 111 away from the second substrate 112, so that the area of the atomization surface 1111 can be increased while the space occupied by the heating component 10 remains unchanged.

[0043] In this embodiment, both the first substrate 111 and the second substrate 112 are generally rectangular parallelepiped-shaped, and the atomization surface 1111 is formed on the rectangular surface of the first substrate 111. Further, the length of the first substrate 111 may be greater than the length of the second substrate 112, and the width of the first substrate 111 may be equivalent to the width of the second substrate 112. In other embodiments, the cross-sections of the first substrate 111 and the second substrate 112 may also be other shapes such as circular, elliptical, rhombic, square, etc.

[0044] The liquid guiding hole 1122 has a bottom surface 1123, and the projection area of the bottom surface 1123 of the liquid guiding hole 1122 on the atomization surface 1111 is the core atomization region A, and this core atomization region A is the concentrated distribution area of the heating element 12a. During normal operation, after the heating element 12a is heated for a preset time, the first average temperature in the core atomization region A is higher than the second average temperature of the entire atomization surface 1111.

[0045] The atomization surface 1111 generally may include a core atomization region A and an edge atomization region B located outside the core atomization region A, and the core atomization region A is usually located at the center position of the atomization surface 1111. The liquid guiding element guides the liquid medium in the liquid storage cavity of the atomizer to the porous body 11. Centered on the bottom surface 1123 of the liquid guiding hole 1122, the liquid diffuses outward, and a core atomization region A is formed on the atomization surface 1111 corresponding to the bottom surface 1123, while the liquid diffuses outward to form the edge atomization region B. When the heating component 10 is heating, because the temperature in the core atomization region A is higher, the liquid medium volatilizes faster. In addition to the liquid medium of the liquid guiding element, part of the liquid medium in the edge atomization region B will also flow to the core atomization region A and gather towards the core atomization region A. Therefore, the edge atomization region B will be limited within a certain range, thus avoiding the situation of liquid leakage, and the user will not inhale liquid droplets when inhaling the mist, improving the user experience.

[0046] In some embodiments, the temperature difference between the first average temperature and the second average temperature may be configured to enable part of the liquid medium in the edge atomization region B to flow to the core atomization region A. Preferably, the first average temperature may be 120 - 200 °C, and the first average temperature may be more than 20 °C higher than the second average temperature.

[0047] Generally, the width of the heating element 12a along the extending direction is consistent, and the distribution density of the heating element 12a in the core atomization region A is greater than that in the peripheral atomization region B outside the core atomization region A. In some embodiments, this distribution density can be the ratio of the area occupied by the heating element 12a in the core atomization region A (or peripheral atomization region B) to the area of this core atomization region A (or peripheral atomization region B).

[0048] Generally, 40%-90% of the heating element 12a is distributed within the core atomization region A. The atomization surface 1111 has a first width L1, and the core atomization region A has a second width L2 along the extending direction of the first width L1. The second width L2 can be 30%-85% of the first width L1. Preferably, the second width L2 is about 2 / 3 of the first width L1, and generally it can be selected between 63%-70%.

[0049] Both ends of the heating element 12a can be respectively provided with a first electrode 141 and a second electrode 142 for being respectively electrically connected to the positive and negative electrodes of the power supply device. Generally, the peripheral atomization region B is located within the space defined by the first electrode 141 and the second electrode 142.

[0050] The heating assembly 10 can adopt an air intake mode such as side air intake or bottom air intake. When the heating assembly 10 is side air intake, the first electrode 141 and the second electrode 142 can be respectively arranged at the diagonals of the atomization surface 1111 to optimize the conveying effect of the smoke during side air intake, effectively prevent the first electrode 141 and the second electrode 142 from obstructing the air flow, avoid the smoke staying in the atomization cavity, and improve the smoke flow efficiency.

[0051] The heating element 12a can be a heating film or a heating wire, and its material can be a metal. Both ends of the heating element 12a can be respectively provided with pads 13 for installing the first electrode 141 and the second electrode 142. Preferably, the heating element 12a is a heating film, and it can be printed on the atomization surface 1111 of the porous body 11 by using electronic paste. When the porous body 11 is a sintered structure, the heating element 12a can be integrally formed with the porous body 11 by sintering.

[0052] In some embodiments, the heating film can include a first covering film and a second covering film formed in sequence on the atomization surface 1111. Both the first covering film and the second covering film can be porous films. The material of the first covering film can be titanium, zirconium, titanium-aluminum alloy, titanium-zirconium alloy, titanium-molybdenum alloy, titanium-niobium alloy, iron-aluminum alloy, tantalum-aluminum alloy, etc., and the material of the second covering film can be platinum, palladium, palladium-copper alloy, gold-silver-platinum alloy, gold-silver alloy, palladium-silver alloy, gold-platinum alloy, etc. Preferably, the first covering film is a titanium-zirconium alloy film, and the second covering film is a gold-silver alloy film.

[0053] The porous body 11 can be made of a hard capillary structure such as porous ceramics, porous glass ceramics, or porous glass. Preferably, the porous body 11 is made of porous ceramics. Porous ceramics are heat-resistant, chemically stable, do not chemically react with the e-liquid, and are insulators, so they will not be electrically connected to the heating element 12a provided thereon to cause problems such as short circuits, which is convenient for manufacturing and has a low cost.

[0054] In some embodiments, the pore diameter range of the micropores on the porous ceramics can be from 1 μm to 100 μm. The average pore diameter of the porous ceramics can be 10 - 35 μm. Preferably, the average pore diameter of the porous ceramics is 20 - 25 μm.

[0055] Preferably, the volume of the micropores with a pore diameter of 5 μm to 30 μm on the porous ceramics accounts for more than 60% of the total volume of all the micropores on the porous ceramics. The volume of the micropores with a pore diameter of 10 - 15 μm in the porous ceramics accounts for more than 20% of the total volume of all the micropores on the porous ceramics, and the volume of the micropores with a pore diameter of 30 - 50 μm in the porous ceramics accounts for about 30% of the total volume of all the micropores on the porous ceramics.

[0056] The porosity of the porous ceramics can be from 30% to 70%. The porosity refers to the ratio of the total volume of the tiny voids in the porous medium to the total volume of the porous medium. The size of the porosity can be adjusted according to the composition of the e-liquid. For example, if the e-liquid has a high viscosity, the porosity can be higher to ensure the liquid guiding effect. Preferably, the porosity of the porous ceramics is 50 - 60%.

[0057] The heating element 12a can be symmetrically arranged with respect to the center point of the atomization surface 1111. In this embodiment, the atomization surface 1111 is generally rectangular, and the core atomization region A is circular.

[0058] The heating element 12a can include a first straight section 121a, a second straight section 122a, and a connecting section that connects the first straight section 121a and the second straight section 122a in series. The first straight section 121a and the second straight section 122a are parallel and can be arranged along the longitudinal direction of the atomization surface 1111.

[0059] The connecting section can include a first arc section 123a connected to the first straight section 121a, a second arc section 125a connected to the second straight section 122a, and a first inclined straight section 124a that connects the first arc section 123a and the second arc section 125a in series. The first arc section 123a and the second arc section 125a are located on the same circumference, and the first arc section 123a and the second arc section 125a can be close to or located at the edge of the core atomization region A. The two ends of the first inclined straight section 124a and the first arc section 123a, the second arc section 125a can be connected by a straight line or an arc.

[0060] Figure 6Shows the heating element 12b in some embodiments of the present invention, as an alternative to the heating element 12a of the above-mentioned heating assembly 10. The heating element 12b may include a first straight section 121b, a second straight section 122b, and a connecting section that connects the first straight section 121b and the second straight section 122b in series. The first straight section 121b and the second straight section 122b are parallel and may be arranged along the longitudinal direction of the atomization surface 1111.

[0061] The connecting section may include at least one third straight section 123b and at least one first bent section 124b connected in series with the at least one third straight section 123b. The third straight section 123b may be perpendicular to the first straight section 121b. Most of the connecting section may be arranged in the core atomization area A, and the distance of the connecting section along the length direction or width direction of the atomization surface 1111 may be equal to or approximately equal to the diameter of the core atomization area A.

[0062] Figure 8 Shows the heating element 12c in some embodiments of the present invention, as an alternative to the heating element 12a of the above-mentioned heating assembly 10. The heating element 12c may include a first straight section 121c, a second straight section 122c, and a connecting section that connects the first straight section 121c and the second straight section 122c in series. The first straight section 121c and the second straight section 122c are parallel and may be arranged along the longitudinal direction of the atomization surface 1111.

[0063] The connecting section may include at least one second inclined straight section 123c, at least one third inclined straight section 125c, and at least one fourth straight section 124c that connects the at least one second inclined straight section 123c and the at least one third inclined straight section 125c in series. The fourth straight section 124c may be parallel to the first straight section 121c. The second inclined straight section 123c and the third inclined straight section 125c are arranged alternately, and the angles between the second inclined straight section 123c, the third inclined straight section 125c and the fourth straight section 124c are equal. The outermost second inclined straight section 123c and third inclined straight section 125c of the connecting section are respectively connected to two pads 13. Most of the connecting section may be arranged in the core atomization area A, and the distance of the connecting section along the length direction or width direction of the atomization surface 1111 may be equal to or approximately equal to the diameter of the core atomization area A.

[0064] In this embodiment, the connecting section includes two second inclined straight sections 123c, two third inclined straight sections 125c, and three fourth straight sections 124c that connect the two second inclined straight sections 123c and the two third inclined straight sections 125c in series.

[0065] Figure 10Shows the heating element 12d in some embodiments of the present invention, as an alternative to the heating element 12a of the above-mentioned heating assembly 10. The heating element 12d may include a first straight section 121d, a second straight section 122d, and a connecting section that connects the first straight section 121d and the second straight section 122d in series. The first straight section 121d is parallel to the second straight section 122d and may be arranged along the longitudinal direction of the atomization surface 1111.

[0066] The connecting section may include a second bending section 123d connected to the first straight section 121d, a third bending section 125d connected to the second straight section 122d, and a fifth straight section 124d that connects the second bending section 123d and the third bending section 125d in series, and the fifth straight section 124d is parallel to the first straight section 121d. The first straight section 121d, the second bending section 123d, the fifth straight section 124d, the third bending section 125d, and the second straight section 122d are connected in series in sequence to form a substantially S-shaped structure.

[0067] Figure 5 、 7 、9 respectively show Figure 4 、 6 、The temperature field distribution diagrams of the atomization surface 1111 after the heating element shown in 8 is heated for 3s. According to the simulation experiment, the first average temperature of the heating element in the core atomization region A is between 120 - 200 °C, and that in the edge atomization region B is below 120 °C. When the user smokes, since the temperature in the core atomization region A is high enough, the e-liquid volatilizes quickly, so that the e-liquid in the edge atomization region B gathers towards the core atomization region A, thus avoiding the occurrence of liquid leakage. When the user inhales the mist, no liquid droplets will be inhaled, improving the user experience.

[0068] Furthermore, by changing the shape and length of the heating element, the temperature of the heating element in the dry burning state can be effectively reduced, thereby reducing the thermal stress between the heating element and the porous body, and further reducing the deformation amounts of the heating element and the porous body. Generally, the shape of the heating element can be configured such that the area size to be heated by the heating element per unit length in the core atomization region A is basically the same, avoiding excessive local temperature of the porous body, so as to reduce the thermal stress between the heating element and the porous body and reduce the deformation amounts of the heating element and the porous body.

[0069] Figure 11 、 Figure 12 respectively show Figure 1 、 Figure 4 、 Figure 10 The stress comparison diagram and displacement amount (deformation amount) comparison diagram of the heating assembly shown in, in the figure, L11, L12, and L13 are respectively Figure 1 、 Figure 10 、 Figure 4The stress distribution curve of the shown heating component along the arc length, where L21, L22, and L23 are respectively Figure 1 , Figure 10 , Figure 4 the displacement distribution curve of the shown heating component along the arc length. Among them, Figure 1 is the heating component 10e in some embodiments of the prior art. The shape of the heating element 12e of this heating component 10e is similar to that of Figure 10 the shown heating element 12d. In this simulation experiment, Figure 1 the overall length of the shown heating component is 9.05 mm, and the width is 4.05 mm; Figure 4 the overall length of the shown heating component is 8 mm, and the width is 4 mm; Figure 10 the overall length of the shown heating component is 10 mm, and the width is 6 mm. Combining Figures 11 - 12 it can be known that Figure 1 the shown heating component has the highest stress and deformation, Figure 4 the shown heating component has the lowest stress and deformation. In the simulation experiment, by adopting the heating element of the heating component shown in Figure 6 , Figure 8 of the present invention, it is also possible to achieve an effect similar to the stress and deformation of the heating element shown in Figure 4 , realizing lower stress and deformation of the heating component.

[0070] Figures 13 - 15 shows an electronic atomization device in some embodiments of the present invention. This electronic atomization device can be used as an electronic cigarette or as a medical nebulizer, etc.

[0071] This electronic atomization device may include an atomizer 1 and a power supply device 2, and the power supply device 2 is electrically connected to the atomizer 1. In some embodiments, the atomizer 1 and the power supply device 2 can be connected together in a detachable manner such as magnetic attraction or screwing.

[0072] The atomizer 1 may include a liquid storage cavity 31 for accommodating a liquid medium, a heating component 10, and a liquid guiding element 20 connecting the liquid storage cavity 31 and the heating component 10. After the atomizer 1 and the power supply device 2 are assembled, the power supply device 2 supplies power to the heating element of the heating component 10 in the atomizer 1. After the heating element heats up, it heats and atomizes the liquid medium for the user to inhale. It can be understood that any of the above heating elements can be applied to this electronic atomization device.

[0073] In some embodiments, the atomizer 1 may further include a liquid storage tank 30 for containing a liquid medium. The inner cavity of the liquid storage tank 30 forms a liquid storage chamber 31. The length and shape of the liquid guiding element 20 can be adjusted according to actual needs. One end of the liquid guiding element 20 can extend into the liquid storage tank 30, and the other end abuts against the bottom surface of the liquid guiding hole 1122 to guide the liquid medium in the liquid storage tank 30 to the porous body 11, and the liquid medium then diffuses outward with the bottom surface of the liquid guiding hole 1122 as the center.

[0074] The liquid guiding element 20 can be made of a porous material and may include at least one honeycomb hole 21 arranged in a honeycomb shape. By controlling the size and number of the honeycomb holes 21, the liquid guiding amount of the liquid guiding element 20 can be strictly controlled. Generally, the size and number of the honeycomb holes 21 can be adjusted according to the viscosity of the liquid medium, so that the liquid guiding amount of the liquid guiding element 20 matches the atomizing amount of the heating element.

[0075] It can be understood that the above technical features can be combined arbitrarily without limitation.

[0076] The above embodiments only represent the preferred embodiments of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention; it should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present invention; therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention should fall within the scope covered by the claims of the present invention.

Claims

1. A heating component (10) for an atomizer, characterized in that, it includes a porous body (11) for sucking a liquid medium and a heating element for heating and atomizing the liquid medium adsorbed to the porous body (11). The porous body (11) includes a first surface and a second surface (1121) arranged oppositely, and the first surface is an atomizing surface (1111) for mounting the heating element; a liquid guiding hole (1122) for accommodating a liquid guiding element is recessed inward from the second surface (1121). The liquid guiding hole (1122) has a bottom surface (1123), and the projection area of the bottom surface (1123) of the liquid guiding hole (1122) on the atomizing surface (1111) is a core atomizing area (A), and the core atomizing area (A) is a concentrated distribution area of the heating element; the heating component (10) includes a first electrode (141) and a second electrode (142) respectively connected to two ends of the heating element, the atomizing surface (1111) includes an edge atomizing area (B) outside the core atomizing area (A), and the edge atomizing area (B) is located within the space defined by the first electrode (141) and the second electrode (142), the distribution density of the heating element in the core atomizing area (A) is greater than that in the edge atomizing area (B) outside the core atomizing area (A), 40 - 90% of the heating element is distributed within the core atomizing area (A), when working normally, after the heating element is heated for a preset time, the first average temperature of the core atomizing area (A) is higher than the second average temperature of the entire atomizing surface (1111).

2. The heating component (10) according to claim 1, characterized in that, the first average temperature is 120 - 200 °C, and the first average temperature is higher than the second average temperature by more than 20 °C.

3. The heating component (10) according to any one of claims 1 - 2, characterized in that, the heating element has a uniform width along the extending direction, and the core atomizing area (A) is located at the central position of the atomizing surface (1111).

4. The heating component (10) according to claim 3, characterized in that, the atomizing surface (1111) has a first width L1, and the core atomizing area (A) has a second width L2 along the extending direction of the first width L1, and the second width L2 is 30% - 85% of the first width L1.

5. The heating component (10) according to claim 4, characterized in that, the second width L2 is 63% - 70% of the first width L1.

6. The heating component (10) according to claim 1, characterized in that, the porous body (11) includes a first substrate (111) and a second substrate (112) in a stepped shape. The cross-sectional area of the first substrate (111) is larger than that of the second substrate (112), and one side surface of the first substrate (111) away from the second substrate (112) forms the atomizing surface (1111).

7. The heating component (10) according to claim 1, wherein, the first electrode (141) and the second electrode (142) are diagonally arranged on the atomization surface (1111).

8. The heating component (10) according to claim 1, wherein, the heating element is symmetrically arranged with respect to the center point of the atomization surface (1111), the heating element includes a first straight section, a second straight section, and a connecting section connecting the first straight section and the second straight section in series, and the first straight section is parallel to the second straight section; the connecting section includes a first arc section connected to the first straight section, a second arc section connected to the second straight section, and a first inclined straight section connecting the first arc section and the second arc section in series, the first arc section and the second arc section are located on the same circumference, and the first arc section and the second arc section are close to or located at the edge of the core atomization region (A).

9. The heating component (10) according to claim 1, wherein, the heating element is symmetrically arranged with respect to the center point of the atomization surface (1111), the heating element includes a first straight section, a second straight section, and a connecting section connecting the first straight section and the second straight section in series, and the first straight section is parallel to the second straight section; the connecting section includes at least one third straight section and at least one first bending section connected to the at least one third straight section in series, and the third straight section is perpendicular to the first straight section.

10. The heating component (10) according to claim 1, wherein, the heating element is symmetrically arranged with respect to the center point of the atomization surface (1111), the heating element includes a first straight section, a second straight section, and a connecting section connecting the first straight section and the second straight section in series, and the first straight section is parallel to the second straight section; the connecting section includes at least one second inclined straight section, at least one third inclined straight section, and at least one fourth straight section connecting the at least one second inclined straight section and the at least one third inclined straight section in series, the fourth straight section is parallel to the first straight section, the second inclined straight section and the third inclined straight section are arranged in a staggered manner, and the angles between the second inclined straight section and the third inclined straight section and the fourth straight section are equal.

11. An atomizer (1), wherein, it includes the heating component (10) according to any one of claims 1-10, a liquid storage cavity (31) for storing a liquid medium, and a liquid guiding element (20) connecting the liquid storage cavity (31) and the heating component (10).

12. An electronic atomization device, wherein, it includes a power supply device (2) and the atomizer (1) according to claim 11, and the power supply device (2) is electrically connected to the atomizer (1).

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