Atomization assembly and electronic atomization device

Abstract

The utility model provides an atomization assembly and an electronic atomization device, the atomization assembly comprises: a porous body having a first surface and a second surface, the porous body being used for guiding atomized liquid from the second surface to the first surface; the heating structure is arranged on the first surface; and the flow control structure is arranged on the first surface, the flow control structure and the heating structure are distributed at intervals to form a flow control gap, and at least part of the flow control gap is consistent with the extension direction of the heating structure. The flow control structure is arranged on the first surface of the porous body to form the flow control gap, and the flow control gap can guide the flow of the atomized liquid, so that the atomized liquid flows in the extension direction of the heating structure more quickly and circulates around the heating structure, and the through-flow position, area and flow volume of the atomized liquid on the first surface are changed; therefore, the speed of supplying liquid to the heating structure is increased, atomized liquid at the heating structure can be supplemented in time, and core pasting of the atomization assembly is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic atomization, and in particular to an atomization component and an electronic atomization device. Background Art

[0002] The atomizer core generally includes a ceramic substrate and a heating circuit arranged on the surface of the ceramic substrate. The ceramic substrate is used to introduce the atomizing liquid. The heating circuit heats the atomizing liquid to atomize and generate aerosol when powered on.

[0003] In the related art, for high-power and large-capacity electronic atomization devices, the atomization efficiency of the heating circuit is relatively high, and the atomizing liquid around the heating circuit will be quickly heated and atomized, while the atomizing liquid around the heating circuit is replenished at a relatively slow speed, causing the atomizing core to easily become sticky. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide an atomization assembly and an electronic atomization device, aiming to solve the problem in the related art that the atomization core is prone to becoming sticky.

[0005] In order to solve the above technical problems, the first aspect of the present invention provides an atomizing assembly, comprising:

[0006] a porous body having a first surface and a second surface, wherein the porous body is used to introduce the atomized liquid from the second surface to the first surface;

[0007] a heating structure, disposed on the first surface; and

[0008] The flow control structure is arranged on the first surface and is spaced apart from the heating structure to form a flow control gap, and the flow control gap is at least partially consistent with the extension direction of the heating structure.

[0009] Optionally, at least one of the heat-generating structure and the flow-controlling structure is a coating formed on the first surface; or,

[0010] The flow control structure is a porous structure, and the porosity or average pore size of the flow control structure is smaller than the porosity or average pore size of the porous body.

[0011] Optionally, the thermal conductivity of the flow control structure is greater than the thermal conductivity of the heat generating structure.

[0012] Optionally, the heating structure includes a heating element having a length extending in a straight line and / or a curve on the first surface;

[0013] The flow control structure includes a first flow control portion on the first surface extending along the length direction of the heating element, wherein the first flow control portion is at least partially located on one side in the width direction of the heating element.

[0014] Optionally, the width of the flow control gap is 1.5 to 5 times the width of the heating element; or

[0015] The first flow control portion extends intermittently on the same side of the width direction of the heating element; or,

[0016] The first flow control portions are arranged alternately and staggered along the length direction on both sides of the width direction of the heating element.

[0017] Optionally, the heating element includes a first heating portion and a second heating portion, both ends of the first heating portion are connected to the second heating portion, and the first heating portion and the second heating portion at least partially extend in different directions on the first surface;

[0018] Wherein, at least a portion of the first flow control portion is located on one side of the width direction of at least one of the first heating portion and the second heating portion and extends along the length direction thereof.

[0019] Optionally, the first heating portion extends in a curved shape on the first surface, and the second heating portion extends in a straight line on the first surface;

[0020] The flow control structure further includes a second flow control portion, wherein the second flow control portion and at least a portion of the first flow control portion are respectively located on two opposite sides of the heating element along the width direction thereof.

[0021] Optionally, the first heating portion and the second heating portion both extend in a curved shape, and along the width direction of the heating element, different second heating portions are respectively surrounded by blank areas on both sides of the first heating portion;

[0022] The first flow control part is located in the blank area, wherein the flow control structure also includes a second flow control part, the second flow control part and the first flow control part are arranged at intervals in the blank area along the length direction of the heating element, and the second flow control part is closer to the first heating part relative to the first flow control part; and / or, the flow control structure also includes a third flow control part, and the third flow control part is located on the other side of the blank area away from the width direction of the second heating part.

[0023] Optionally, a hollow structure extending along the length direction of the first heating portion is provided in the first heating portion.

[0024] A second aspect of the present invention provides an electronic atomization device, comprising: a housing and an atomization assembly as described above;

[0025] A liquid storage cavity and an air flow channel are provided in the shell, and the liquid storage cavity has a liquid outlet;

[0026] The second surface of the atomizing assembly is in liquid communication with the liquid storage chamber through the liquid outlet, and the first surface of the atomizing assembly is away from the liquid outlet and exposed in the air flow channel.

[0027] Compared with the related technologies, the atomization component and the electronic atomization device in the present invention have the following beneficial effects: by arranging a flow control structure on the first surface of the porous body to form a flow control gap, the flow control gap can guide the flow of the atomized liquid, so that the atomized liquid flows more and faster along the extension direction of the heating structure and circulates around the heating structure, thereby changing the flow position and area of the atomized liquid on the first surface, as well as the flow volume, playing a flow control role, and thereby increasing the speed of liquid supply to the heating structure, and can timely replenish the atomized liquid at the heating structure to avoid core sticking of the atomization component. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 This is a cross-sectional view of the electronic atomization device provided by the utility model

[0030] Figure 2 This is a structural diagram of an atomization assembly provided by an embodiment of the present utility model;

[0031] Figure 3 This is a top view of an atomization assembly provided by one embodiment of the present utility model;

[0032] Figure 4 This is a structural diagram of an atomization assembly provided by another embodiment of the present invention;

[0033] Figure 5 This is a structural diagram of an atomization assembly provided by another embodiment of the present utility model;

[0034] Figure 6 It is a top view of an atomization assembly provided in another embodiment of the present invention.

[0035] In the accompanying drawings, each reference numeral represents:

[0036] 1. porous body; 11. first surface; 12. second surface; 13. blank area;

[0037] 2. Heating structure; 21. First heating portion; 211. Hollow structure; 22. Second heating portion;

[0038] 3. Flow control structure; 31. First flow control part; 32. Second flow control part; 33. Third flow control part;

[0039] 4. Flow control gap; 5. Electrode part;

[0040] 10. Housing; 101. Liquid storage chamber; 102. Air flow channel; 103. Liquid outlet;

[0041] 20. Atomization component. DETAILED DESCRIPTION

[0042] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0045] Example:

[0046] See also Figure 1The present invention provides an electronic atomization device, including a housing 10 and an atomization assembly 20. A liquid storage chamber 101 and an air flow channel 102 are provided in the housing 10. The liquid storage chamber 101 has a liquid outlet 103. The second surface 12 of the atomization assembly 20 is in liquid communication with the liquid storage chamber 101 through the liquid outlet 103. The atomized liquid stored in the liquid storage chamber 101 flows to the atomization assembly 20 through the liquid outlet 103. The first surface 11 of the atomization assembly 20 faces away from the liquid outlet 103 and is exposed to the air flow channel 102, so that the aerosol generated by the atomization assembly 20 heating the atomized liquid can flow into the air flow channel 102.

[0047] See also Figures 2 to 6 The atomizing assembly 20 includes a porous body 1, a heating structure 2, and a flow control structure 3. The porous body 1 has a first surface 11 and a second surface 12, and is used to guide the atomized liquid from the second surface 12 to the first surface 11; the heating structure 2 is disposed on the first surface 11; the flow control structure 3 is disposed on the first surface 11 and is spaced apart from the heating structure 2 to form a flow control gap 4, and the flow control gap 4 is at least partially aligned with the extension direction of the heating structure 2.

[0048] By setting a flow control structure 3 on the first surface 11 of the porous body 1 to form a flow control gap 4, the flow control gap 4 can guide the flow of the atomized liquid, so that the atomized liquid flows more and faster along the extension direction of the heating structure 2, and circulates around the heating structure 2, thereby changing the flow position and area of the atomized liquid on the first surface 11, as well as the flow volume, playing a flow control role, and then increasing the speed of liquid supply to the heating structure 2, and can timely replenish the atomized liquid at the heating structure 2 to avoid the core of the atomizing component 20 from getting stuck.

[0049] It should be noted that the porous body 1 may be a porous ceramic body, the first surface 11 of the porous body 1 is an atomizing surface, and the second surface 12 is a liquid absorbing surface. The first surface 11 and the second surface 12 may be two adjacent, spaced apart, or opposite surfaces of the porous body 1.

[0050] In some specific embodiments, the porous body 1 is a flat block structure, and the first surface 11 and the second surface 12 are opposite and parallel to each other, so that the atomized liquid has the same liquid supply rate from the second surface 12 to the first surface 11.

[0051] In some embodiments, at least one of the heating structure 2 and the flow control structure 3 is a coating formed on the first surface 11. For example, the heating structure 2 and the flow control structure 3 are both coatings formed on the first surface 11, and the heating structure 2 and the flow control structure 3 are both formed on the first surface 11 of the porous body 1 by one-time printing, thereby reducing the difficulty of forming the heating structure 2 and the flow control structure 3.

[0052] See also Figure 2 、 Figure 4 and Figure 5 , the heating structure 2 includes a heating element having a length extending in a straight line and / or a curve on the first surface 11, for example, the heating element is a straight segment or a curved segment, or the heating element has both a straight segment and a curved segment. Among them, when the heating element is a curved segment, the contact area between the heating structure 2 and the first surface 11 can be increased to ensure the atomization amount, thereby meeting the needs of high power and large capacity. The flow control structure 3 includes a first flow control portion 31 extending along the length direction of the heating element on the first surface 11 to ensure that the extension direction of the flow control gap 4 is consistent with the extension direction of the heating structure 2; the first flow control portion 31 is at least partially on one side in the width direction of the heating element to ensure that the flow control gap 4 is arranged around the heating structure 2, thereby achieving rapid liquid supply to the heating structure 2 through the flow control gap 4. According to actual needs, the first flow control portion 31 can be only on one side in the width direction of the heating element, or can be respectively arranged on both sides in the width direction of the heating element.

[0053] In some embodiments, the width of the flow control gap 4 is 1.5 to 5 times the width of the heating element, for example, 1.5 times, 2 times, 3 times and 5 times, etc., wherein, when the width of the flow control gap 4 is too small, insufficient liquid supply is likely to occur, and when the width of the flow control gap 4 is too large, flow control cannot be achieved, thereby avoiding dry burning.

[0054] In some embodiments, see Figure 3 、 Figure 4 and Figure 6 The first flow control part 31 is arranged alternately and staggered along the length direction on both sides of the width direction of the heating element, so that the flow control structure 3 forms a flow control gap 4 with the heating structure 2 on both sides of the width direction of the heating element, so that the flow control gaps 4 on both sides of the heating element along its width direction can circulate with each other. When there are different temperature fields in the heating element, between different flow control gaps 4, the flow control gap 4 with more liquid supply (or slow consumption of atomized liquid) can flow to the place with less liquid supply (or fast consumption of atomized liquid) to meet the liquid supply needs of the atomized liquid in different heating parts of the heating structure 2.

[0055] Alternatively, in other embodiments, the first flow control portion 31 extends intermittently on the same side in the width direction of the heating element, so that the flow control structure 3 forms a flow control gap 4 with the heating element only on one side in the width direction of the heating element, so that the atomized liquid can flow from the non-flow control gap 4 into the flow control gap 4 between the flow control structure 3 and the heating structure 2, so as to ensure that there is sufficient atomized liquid in the flow control gap 4, thereby reducing the dry burning problem caused by insufficient liquid supply to the local heating element.

[0056] See also Figure 3 and Figure 6The heating structure 2 includes a first heating portion 21 and a second heating portion 22, and the two ends of the first heating portion 21 are respectively connected to a second heating portion 22; wherein the first heating portion 21 and the second heating portion 22 extend at least partially in different directions on the first surface 11; the first flow control portion 31 is at least partially on one side of the width direction of at least one of the first heating portion 21 and the second heating portion 22 and extends along its length direction, so that the flow control gap 4 is always consistent with the extension direction of the first heating portion 21 and / or the second heating portion 22. For example, the extension trajectory of the first flow control portion 31 is on one side of the width direction of the first heating portion 21 and extends along its length direction, or the extension trajectory of the first flow control portion 31 is on one side of the width direction of the second heating portion 22 and extends along its length direction, or the extension trajectory of the first flow control portion 31 is on one side of the width direction of the first heating portion 21 and the second heating portion 22 and extends along its length direction.

[0057] It should be noted that one or more first heating parts 21 may be provided, and each first heating part 21 may be connected to a second heating part 22 at both ends. For example, if there is only one first heating part 21, two second heating parts 22 may be connected to both ends of the first heating part 21; or, if there are two first heating parts 21, four second heating parts 22 may be provided, and each first heating part 21 may be connected to a second heating part 22 at both ends.

[0058] See also Figure 5 and Figure 6 The first heating part 21 extends in a curve on the first surface 11, that is, the first heating part 21 is a curved segment, and the second heating part 22 extends in a straight line on the first surface 11, that is, the second heating part 22 is a straight segment. Setting the first heating part 21 as a curved segment and the second heating part 22 as a straight segment is conducive to connection with a power supply; the flow control structure also includes a second flow control part 32, and the second flow control part 32 and at least part of the first flow control part 31 are respectively located on two opposite sides of the heating element along its width direction, so that the flow control structure 3 forms a flow control gap 4 with the heating structure 2 on both sides of the width direction of the heating element.

[0059] See also Figure 2 、 Figure 3 and Figure 4 In some embodiments, a blank area 13 is enclosed between the adjacent first heating portion 21 and the second heating portion 22; wherein, at least part of the flow control structure 3 is located in the blank area 13, that is, at least part of the flow control structure 3 is located between the adjacent first heating portion 21 and the second heating portion 22.

[0060] See also Figure 4In some embodiments, the first heating portion 21 and the second heating portion 22 both extend in a curved shape, and along the width direction of the heating element, different second heating portions 22 are respectively surrounded by blank areas 13 on both sides of the first heating portion 21; the first flow control portion 31 is located within the blank area 13, wherein the flow control structure 3 further includes a second flow control portion 32 and / or a third flow control portion 33, and the second flow control portion 32 and the first flow control portion 31 are spaced apart in the blank area 13 along the length direction of the heating element, the second flow control portion 32 being closer to the first heating portion 21 than the first flow control portion 31, and the third flow control portion 33 being located on the other side of the second heating portion 22 away from the blank area 13 along the width direction. For example, the first heating portion 21 is S-shaped, the second heating portion 22 is arc-shaped, the first flow control portion 31 is arc-shaped, the second flow control portion 32 is cylindrical, and the third flow control portion 33 is arc-shaped.

[0061] See also Figure 3 and Figure 6 The first heating part 21 is provided with a hollow structure 211 extending along its length direction. The hollow structure 211 can be a through hole to form a liquid inlet gap in the internal area of the heating element, which can reduce the arrangement density of the effective atomization area on the first surface 11, which is beneficial to increase the liquid supply speed and avoid the formation of local high temperature areas in the heating element, resulting in problems such as dry burning and burnt smell.

[0062] See also Figure 5 and Figure 6 The heating structure 2 is a centrosymmetrical structure, and / or the flow control structure 3 is a centrosymmetrical structure. For example, the first heating portion 21 is a curved segment, and the first heating portion 21 is S-shaped; the second heating portion 22 is a straight segment, and the first heating portion 21 is connected to a second heating portion 22 at each end. The flow control structure 3 includes two first flow control portions 31 and a second flow control portion 32. The two first flow control portions 31 are located on opposite sides of the heating element, and the two second flow control portions 32 are located on opposite sides of the heating element.

[0063] The flow control structure 3 is a porous structure. For example, the flow control structure 3 can be a porous ceramic body. The porosity or average pore size of the flow control structure 3 is smaller than the porosity or average pore size of the porous body 1. For example, the porosity or average pore size of the flow control structure 3 is smaller than the porosity or average pore size of the porous body 1, so that the flow control structure 3 has a liquid-blocking effect on the surface of the porous body 1, so that the atomized liquid of the porous body can flow to the liquid control gap 4 between the heating structure 2 and the flow control structure 1, ensuring that the flow control structure 3 guides the flow of the atomized liquid. Moreover, the porosity or average pore size of the flow control structure 3 is smaller than the porosity or average pore size of the porous body 1, so that the density of the flow control structure 3 is higher than the density of the porous body 1, and the flow control structure 3 is arranged on the first surface 11, so that the performance parameters can be changed by reducing the pore structure size of the first surface 11 of the porous body 1, thereby changing the flow position and area of the atomized liquid on the atomizing surface and the flow rate, realizing the flow control effect of the flow control gap 4, so as to increase the effective contact area between the heating structure 2 and the atomized liquid.

[0064] Depending on actual needs, the porosity of the porous body 1 is greater than or equal to 50%, for example, 50%, 60%, 65%, etc., and the porosity of the flow control structure 3 is less than or equal to 45%, for example, 45%, 40%, 35%, etc. The width of the flow control gap 4 is greater than twice the minimum line width of the heating structure 2, so that the atomized liquid at the heating structure 2 can be replenished more promptly; the minimum line width of the heating body is the smallest line width among the first heating portion 21, the second heating portion 22, and the flow control structure 3.

[0065] It should be noted that the flow control structure 3 may also be a dense layer or dense part with a non-porous structure formed on the first surface 11, such as a dense metal layer, a metal part, etc., and of course other non-metallic materials may also be used; similarly, the heating structure 2 may be an etched metal sheet formed on the first surface 11. The phrase "the flow control structure 3 or the heating structure 2 is formed on the first surface 11" herein means that the flow control structure 3 or the heating structure 2 can be attached to the first surface 11 or embedded in the first surface 11, and at least partially exposed to the first surface 11.

[0066] In some embodiments, the thermal conductivity of the flow control structure 3 is greater than that of the heating structure 2, so that areas of the heating structure 2 with higher heat flux density can quickly conduct heat through the flow control structure 3, thereby reducing the local maximum temperature of the heating structure 2 and improving thermal conductivity. Moreover, the thermal conductivity of the flow control structure 3 is greater than that of the porous body 1, so that areas of the heating structure 2 with higher heat flux density can quickly conduct heat through the flow control structure 3, thereby reducing the local maximum temperature of the heating structure 2 and improving thermal conductivity.

[0067] See also Figures 2 to 6The atomizing assembly 20 further includes an electrode portion 5. Two electrode portions 5 are provided, and the two electrode portions 5 are respectively connected to the two second heating portions 22. The electrode portion 5 is used to connect to a power source to supply power to the first heating portion 21 and the second heating portion 22. One of the two electrode portions 5 is a positive electrode, and the other is a negative electrode. The angle between the line connecting the two centers of the minimum curvature radius at the center of the heating structure 2 and the horizontal direction ranges from 0° to 180°, for example, 0°, 20°, 45°, 90°, 120°, 180°, etc.

[0068] See also Figure 2 and Figure 3 In a specific example, the heating structure 2 includes a first heating portion 21 and two second heating portions 22. The two second heating portions 22 are connected to the two ends of the first heating portion 21, and the two second heating portions 22 are connected to the two electrode portions 5. The electrode portions 5, the first heating portion 21, and the second heating portion 22 are connected to form a centrally symmetrical structure. The first heating portion 21 is a curved S-shaped segment, and the second heating portion 22 is a curved arc-shaped segment. A blank area 13 is enclosed between adjacent first heating portions 21 and second heating portions 22. The radius of curvature of the heating structure 2 decreases along the electrode portions 5 toward the center, and the angle between the line connecting the two centers of the smallest curvature radius and the horizontal direction is 15°. The flow control structure 3 is provided with two first flow control parts 31 and two second flow control parts 32. The first flow control part 31 and the second flow control part 32 are both located in the blank area 13. The second flow control part 32 is circular and is located on the inner side of the curve segment with the smallest curvature radius; the first flow control part 31 is arc-shaped and is located on the inner side of the curve segment with a larger curvature radius.

[0069] See also Figure 4 In another specific example, the heating structure 2 includes a first heating portion 21 and two second heating portions 22. The two second heating portions 22 are respectively connected to the two ends of the first heating portion 21, and the two second heating portions 22 are respectively connected to the two electrode portions 5. The electrode portions 5, the first heating portion 21, and the second heating portion 22 are connected to form a centrally symmetrical structure. The first heating portion 21 is a curved segment with an S-shape, and the second heating portion 22 is a curved segment with an arc shape. A blank area 13 is enclosed between adjacent first heating portions 21 and second heating portions 22. The radius of curvature of the heating structure 2 decreases continuously from the electrode portion 5 to the center, and the angle between the line connecting the two centers of the smallest curvature radius and the horizontal direction is 15°. The flow control structure 3 is provided with two first flow control parts 31, two second flow control parts 32 and two third flow control parts 33. The first flow control parts 31 and the second flow control parts 32 are both located in the blank area 13. The two second flow control parts 32 are circular and located on the inner side of the curve segment with the smallest curvature radius; the two first flow control parts 31 are arc-shaped and located on the inner side of the curve segment with a larger curvature radius; the two third flow control parts 33 are arc-like and located on the outer side of the curve segment with a larger curvature radius.

[0070] See also Figure 5 and Figure 6 In some embodiments, the first heating portion 21 is provided with multiple portions, and a blank area 13 is enclosed on the first surface 11 between two adjacent second heating portions 22 of any first heating portion 21; wherein, at least part of the flow control structure 3 is located in the blank area 13, that is, at least part of the flow control structure 3 is located between the two adjacent second heating portions 22 of the first heating portion 21.

[0071] See also Figure 5 and Figure 6 In a specific example, the heating structure 2 is provided with two first heating parts 21 and three second heating parts 22. Each first heating part 21 is connected to two second heating parts 22 at both ends, and the two second heating parts 22 are respectively connected to two electrode parts 5. The electrode part 5, the first heating part 21, and the second heating part 22 are connected to form a centrally symmetrical structure. The first heating part 21 is a curved segment and is arc-shaped, and the second heating part 22 is a straight segment. The angle between the line connecting the two centers of the smallest curvature radius of the heating structure 2 and the horizontal direction is 28°. The flow control structure 3 is provided with two first flow control parts 31, two second flow control parts 32, and two third flow control parts 33. The two second flow control parts 32 are circular and located on the inner side of the curved segment with the smallest curvature radius; the two first flow control parts 31 are arc-shaped and located on the outer side of the curved segment with the smallest curvature radius; and the two third flow control parts 33 are straight and located on one side of the straight segment.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An atomizing assembly, characterized in that: include: a porous body having a first surface and a second surface, wherein the porous body is used to introduce the atomized liquid from the second surface to the first surface; a heating structure, disposed on the first surface; as well as, The flow control structure is arranged on the first surface and is spaced apart from the heating structure to form a flow control gap, and the flow control gap is at least partially consistent with the extension direction of the heating structure.

2. The atomizing assembly according to claim 1, characterized in that: At least one of the heat-generating structure and the flow-controlling structure is a coating formed on the first surface; or, The flow control structure is a porous structure, and the porosity or average pore size of the flow control structure is smaller than the porosity or average pore size of the porous body.

3. The atomizing assembly according to claim 1 or 2, characterized in that: The thermal conductivity of the flow control structure is greater than the thermal conductivity of the heat generating structure.

4. The atomizing assembly according to claim 1, characterized in that: The heating structure comprises a heating element having a length extending in a straight line and / or a curve on the first surface; The flow control structure includes a first flow control portion on the first surface extending along the length direction of the heating element, wherein the first flow control portion is at least partially located on one side in the width direction of the heating element.

5. The atomizing assembly according to claim 4, characterized in that: The width of the flow control gap is 1.5 to 5 times the width of the heating element; or The first flow control portion extends intermittently on the same side of the width direction of the heating element; or, The first flow control portions are arranged alternately and staggered along the length direction on both sides of the width direction of the heating element.

6. The atomizing assembly according to claim 4, characterized in that: The heating element includes a first heating portion and a second heating portion, wherein both ends of the first heating portion are connected to the second heating portion, and the first heating portion and the second heating portion at least partially extend in different directions on the first surface; Wherein, at least a portion of the first flow control portion is located on one side of the width direction of at least one of the first heating portion and the second heating portion and extends along the length direction thereof.

7. The atomizing assembly according to claim 6, characterized in that: The first heating portion extends in a curved shape on the first surface, and the second heating portion extends in a straight line on the first surface; The flow control structure further includes a second flow control portion, wherein the second flow control portion and at least a portion of the first flow control portion are respectively located on two opposite sides of the heating element along the width direction thereof.

8. The atomizing assembly according to claim 6, characterized in that: The first heating portion and the second heating portion both extend in a curved shape, and along the width direction of the heating element, different second heating portions are respectively surrounded by blank areas on both sides of the first heating portion; The first flow control part is located in the blank area, wherein the flow control structure also includes a second flow control part, the second flow control part and the first flow control part are arranged at intervals in the blank area along the length direction of the heating element, and the second flow control part is closer to the first heating part relative to the first flow control part; and / or, the flow control structure also includes a third flow control part, and the third flow control part is located on the other side of the second heating part away from the blank area along the width direction of the second heating part.

9. The atomizer assembly according to any one of claims 6 to 8, characterized in that: The first heating portion is provided with a hollow structure extending along its length direction.

10. An electronic atomization device, characterized in that: include: A housing and an atomizer assembly according to any one of claims 1 to 9; A liquid storage cavity and an air flow channel are provided in the shell, and the liquid storage cavity has a liquid outlet; The second surface of the atomizing assembly is in liquid communication with the liquid storage chamber through the liquid outlet, and the first surface of the atomizing assembly is away from the liquid outlet and exposed in the air flow channel.

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