Atomizer and electronic atomization device

Abstract

The utility model relates to an atomizer and an electronic atomization device.The atomizer comprises an atomization shell and an atomization assembly, a liquid storage cavity is formed in the atomization shell, an atomization cavity and an atomization core are arranged in the atomization assembly, and a ventilation resorption channel communicating the liquid storage cavity with the atomization cavity is formed in the atomization assembly; the air exchange back-suction channel comprises a first air exchange opening communicated with the liquid storage cavity, a second air exchange opening formed in the atomization cavity and a first capillary groove communicated with the first air exchange opening and the second air exchange opening, and a second capillary groove is formed in the atomization cavity and communicated with the air exchange back-suction channel. According to the atomizer, the air exchange resorption channel and the second capillary groove are formed in the atomizer, the second capillary groove attracts and gathers redundant liquid matrixes in the atomization cavity through capillary force, then the liquid matrixes are sent back into the liquid storage cavity through the air exchange resorption channel to be recycled, and therefore the situation that the air exchange resorption channel is blocked due to the fact that too much liquid matrixes are accumulated in the atomization cavity is avoided; smooth ventilation is ensured, and the risk of dry burning film breakage is reduced.

Description

Technical Field

[0001] This application relates to the technical field of atomization, and more specifically, to an atomizer and an electronic atomization device. Background Art

[0002] An electronic atomization device generally includes an atomizer and a power supply device. Among them, the power supply device is used to supply power to the atomizer. The atomizer includes a liquid storage cavity and an atomization component. The liquid storage cavity is used to store a liquid matrix, and the atomization component is used to heat and atomize the liquid matrix after being powered on to generate an aerosol that can be absorbed.

[0003] In order to balance the pressure in the liquid storage cavity, the atomizer is generally provided with a ventilation channel. The common problem of existing atomizers is that the heating element is prone to leakage during suction. In a short time, the liquid matrix will fill the atomization cavity, which will block the ventilation channel, causing the ventilation channel to malfunction, resulting in a negative pressure in the liquid storage cavity and causing the liquid not to flow down, thereby leading to the problem that the heating element dries out and breaks the film, causing the atomizer to fail. Summary of the Utility Model

[0004] The technical problem to be solved by this application is to provide an improved atomizer and an electronic atomization device having the atomizer in view of the above-mentioned defects of the prior art, so that the ventilation channel can be normally used in case of leakage.

[0005] The technical solution adopted by this application to solve its technical problems is to construct an atomizer, including an atomization housing, and an atomization component at least partially received in the atomization housing.

[0006] A liquid storage cavity is provided in the atomization housing, and an atomization cavity and an atomization core are provided in the atomization component.

[0007] A ventilation and back-suction channel communicating the liquid storage cavity with the atomization cavity is provided on the atomization component. The ventilation and back-suction channel includes a first ventilation port communicating with the liquid storage cavity, a second ventilation port opened on the atomization cavity, and a first capillary groove communicating the first ventilation port and the second ventilation port.

[0008] A second capillary groove is provided in the atomization cavity, and the second capillary groove communicates with the ventilation and back-suction channel.

[0009] In some embodiments, the atomization component includes a heating base and a heating cover, and at least one second capillary groove is provided.

[0010] The second capillary groove is provided on the heating base, and / or the second capillary groove is provided on the heating cover.

[0011] In some embodiments, when the second capillary groove is disposed on the heating base, the second capillary groove communicates with the bottom of the atomization chamber and the second air exchange port.

[0012] In some embodiments, when the second capillary groove is disposed on the heating cover, the second capillary groove communicates with the atomization core and the second air exchange port.

[0013] In some embodiments, the area of the second air exchange port is less than 2.5 mm 2 。

[0014] In some embodiments, the cross-sectional shape of the second air exchange port is rectangular, the length of the second air exchange port is less than or equal to 1.5 mm, and the height of the second air exchange port is less than or equal to 1.5 mm.

[0015] In some embodiments, the cross-sectional area of the first capillary groove is greater than or equal to 0.18 mm 2 。

[0016] In some embodiments, the cross-sectional shape of the first capillary groove is rectangular, the length of the long side of the cross-section of the first capillary groove is not less than 0.6 mm, and the length of the short side of the cross-section of the first capillary groove is not less than 0.3 mm.

[0017] In some embodiments, the height of the second air exchange port is higher than the bottom of the atomization chamber.

[0018] The present application further provides an electronic atomization device, including the atomizer described above, and further including a battery assembly, the battery assembly being connected to one end of the atomizer and electrically connected to the atomizer.

[0019] Implementing the present application has at least the following beneficial effects: The present application provides a ventilation and back-suction channel and a second capillary groove in the atomizer. The second capillary groove attracts and accumulates the excess liquid matrix in the atomization chamber through capillary force, and then sends the liquid matrix back to the liquid storage chamber through the ventilation and back-suction channel for recycling, thereby avoiding excessive accumulation of the liquid matrix in the atomization chamber and blocking the ventilation and back-suction channel, ensuring smooth ventilation, and reducing the risk of dry burning and film breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following will further illustrate the present application in conjunction with the drawings, in which:

[0021] Figure 1 is a schematic perspective view of an electronic atomization device in some embodiments of the present application;

[0022] Figure 2 is Figure 1 the exploded structural schematic diagram of the electronic atomization device shown;

[0023] Figure 3 isFigure 1 One of the sectional schematic views of the atomizer;

[0024] Figure 4 is Figure 1 Another sectional schematic view of the atomizer;

[0025] Figure 5 is Figure 4 The enlarged structural schematic view of part A in the atomizer;

[0026] Figure 6 The structural schematic view of the heating base and the heating cover;

[0027] Figure 7 is Figure 6 The top view of the shown heating base;

[0028] Figure 8 is Figure 6 The back structural schematic view of the shown heating cover;

[0029] Figure 9 is Figure 6 The structural schematic view of the air exchange and back suction channel on the shown heating cover.

[0030] Explanation of the reference numerals in the drawings:

[0031] Electronic atomization device 10,

[0032] Atomizer 100, atomization outer shell 110, liquid storage cavity 111, air outlet channel 112, heating base 120, atomization cavity 121, second capillary groove 122, heating element 130, electrode assembly 131, insulating sleeve 140, liquid absorption body 150, heating cover 160, liquid downward channel 161, first air exchange port 162, second air exchange port 163, first capillary groove 164, silica gel sleeve 170, power supply device 200, power supply outer shell 210, battery bracket 220. Detailed implementation manners

[0033] For a clearer understanding of the technical features, objectives, and effects of the present application, the specific implementation manners of the present application will now be described in detail with reference to the accompanying drawings. Many specific details are set forth in the following description in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "lateral", "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the products of the present application are customarily placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0035] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0036] In the present application, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0038] Figure 1 Some embodiments of the electronic atomization device 10 in the present application are shown. The electronic atomization device 10 includes an atomizer 100 and a power supply device 200 that is cooperatively connected to the atomizer 100. The atomizer 100 is used to contain a liquid matrix and heat and atomize the liquid matrix after being powered on to generate an aerosol, and the liquid matrix includes, but is not limited to, materials for medical, health preservation, health, and beauty purposes. The power supply device 200 includes a power supply housing 210, a battery and a control circuit that are at least partially housed inside the power supply housing 210. The battery is used to supply power to the atomizer 100, and the control circuit is used to control the atomizer 100 to generate heat.

[0039] In some embodiments, both the atomizer 100 and the power supply device 200 can be generally elliptical columnar, and the two can be mechanically and electrically connected together along the axial direction. Further, the atomizer 100 and the power supply device 200 can be connected together by detachable means such as magnetic attraction connection, screw connection, snap connection, etc. It can be understood that in other embodiments, the atomizer 100 and the power supply device 200 can also be connected together by non-detachable means. In addition, the cross-sectional shape of the atomizer 100 and / or the power supply device 200 is not limited to being elliptical, and it can also be other shapes such as circular, racetrack-shaped, or rectangular.

[0040] As Figures 2 to 4 shown, the atomizer 100 includes an atomization housing 110 and an atomization component at least partially received in the lower part of the atomization housing 110. Among them, a liquid storage cavity 111 for storing a liquid matrix is formed in the atomization housing 110, and an air outlet passage 112 for outputting an aerosol is isolated from the liquid storage cavity 111. The atomization component is disposed at the lower end opening of the atomization housing 110 to block the liquid storage cavity 111. The atomization component includes an atomization seat and an atomization core, and the atomization core is disposed in the atomization seat. In this embodiment, the atomization seat includes a heating seat 120 and a heating cover 160 that match each other. The heating cover 160 and the heating seat 120 are connected together by at least one of plugging, snap connection, and bolt connection. An atomization cavity 121 is formed between the heating seat 120 and the heating cover 160. The atomization cavity 121 communicates with the air outlet passage 112, and an air inlet passage communicating with the atomization cavity 121 is also provided on the heating seat 120; an atomization core is disposed between the heating seat 120 and the heating cover 160. One side of the atomization core is in liquid conduction communication with the liquid storage cavity 111, and the other side of the atomization core facing away from the liquid storage cavity 111 is located in the atomization cavity 121, that is, the atomization core separates the liquid storage cavity 111 and the atomization cavity 121. In other embodiments, the atomization seat can also be a single integral accessory, the atomization cavity 121 is formed inside the atomization seat, and the atomization core is also disposed inside the atomization seat and separates the liquid storage cavity 111 and the atomization cavity 121. After being powered on, the atomization core heats and atomizes the liquid matrix in the liquid storage cavity 111 to form an aerosol. The aerosol is discharged into the atomization cavity 121. When the user sucks, the external gas input into the atomization cavity 121 from the air inlet passage carries the aerosol and outputs it through the air outlet passage 112.

[0041] The atomization core includes a liquid absorbent 150 and a heating element 130 in contact with the liquid absorbent 150. In some embodiments, the liquid absorbent 150 can be made of porous materials such as porous ceramics and absorbent cotton, so that a large number of micropores are formed inside the liquid absorbent 150 and it has a certain porosity. Through the capillary action of the micropores, the liquid absorbent 150 can absorb and cache the liquid matrix. The liquid absorbent 150 has an atomization surface and a liquid absorption surface. The liquid absorption surface is communicated with the liquid storage cavity 111, and the atomization surface is exposed in the atomization cavity 121 and is in contact with the heating element 130. The liquid absorbent 150 sucks the liquid matrix from the liquid storage cavity 111 through the liquid absorption surface and conducts the liquid matrix to the atomization surface. After being powered on, the heating element 130 heats and atomizes the liquid matrix adsorbed by the liquid absorbent 150.

[0042] As Figure 2 , Figure 3 shown, in this embodiment, the liquid absorbent 150 can be generally in the shape of a rectangular plate and can be arranged in the vertical direction. Both the atomization surface and the liquid absorption surface are arranged in the vertical direction, and they can be two surfaces of the liquid absorbent 150 oppositely arranged in the thickness direction. Further, the air outlet channel 112 is also arranged in the vertical direction, and the central axis of the atomization surface of the liquid absorbent 150 is parallel to the air outlet channel 112. In other embodiments, the liquid absorbent 150 is not limited to being in the shape of a rectangular plate, and it can also be in other shapes such as columnar, tubular or bowl-shaped. In addition, the atomization surface and / or the liquid absorption surface can also be arranged horizontally, or can be inclined at a certain angle with respect to the vertical direction or the horizontal direction.

[0043] In some embodiments, the atomization core may further include an insulating sleeve 140. The insulating sleeve 140 can be made of insulating elastic high-temperature resistant materials such as silica gel. The liquid absorbent 150 abuts against the heating cover 160 or the heating base 120 via the insulating sleeve 140. The insulating sleeve 140 can be in a frame shape, and the four edges of the liquid absorption surface of the liquid absorbent 150 can abut against the insulating sleeve 140 through a liquid guide. On the one hand, the insulating sleeve 140 can prevent liquid leakage, and on the other hand, it can protect the liquid absorbent 150 from being crushed by extrusion during installation. It can be understood that in other embodiments, the atomization core may not include the insulating sleeve 140.

[0044] As Figure 4 , Figure 5 shown, in this embodiment, a liquid downward channel 161 is formed in the heating cover 160. It can be understood that in other embodiments, the liquid downward channel 161 can also be formed in the heating base 120 with an integral structure. The liquid downward channel 161 communicates the liquid absorption surface of the liquid absorbent 150 with the liquid storage cavity 111, and the liquid matrix in the liquid storage cavity 111 is guided to the liquid absorption surface of the liquid absorbent 150 via the liquid downward channel 161.

[0045] In some embodiments, the liquid supply channel 161 includes a first channel section arranged vertically and a second channel section arranged horizontally, and the first channel section and the second channel section form an L-shaped channel. It is easy to understand that the use of the L-shaped channel for the liquid supply channel 161 can make the arrangement position of the atomization core more flexible. For example, the atomization core can be arranged below the air outlet channel 112 so that the atomization surface of the liquid absorbent 150 is located at the central axis of the air outlet channel 112. In addition, in other embodiments, the liquid supply channel 161 can also adopt a straight channel, an arc channel, etc.

[0046] As Figure 5 、 Figure 6 and Figure 9 shown, in this embodiment, an air exchange and back-suction channel is provided on the atomization base. The air exchange and back-suction channel includes a first air exchange port 162 communicating with the liquid storage cavity 111, a second air exchange port 163 opened on the atomization cavity 121, and a first capillary groove 164 communicating the first air exchange port 162 and the second air exchange port 163. Specifically, the atomization cavity may refer to the inner wall of the atomization cavity. In some embodiments, the atomization cavity is formed by the atomization base, and the air exchange and back-suction channel can be provided on the atomization base, including that the first air exchange port, the second air exchange port and the first capillary groove are provided on the atomization base. In some embodiments, the first air exchange port 162 can be directly connected to the liquid storage cavity 111, or connected to the liquid storage cavity 111 through the liquid supply channel 161, that is, one end of the air exchange and back-suction channel is connected to the liquid storage cavity 111; the other end of the air exchange and back-suction channel is connected to the atomization cavity 121 through the second air exchange port 163 and further connected to the outside atmosphere. The air exchange and back-suction channel is used to balance the pressure in the liquid storage cavity 111 and solve the problem that the liquid cannot flow stably due to excessive negative pressure in the liquid storage cavity 111. Further, in the air exchange and back-suction channel of the present application, the area of the second air exchange port 163 is less than 2.5 mm 2 , and the cross-sectional area of the first capillary groove 164 is less than or equal to the area of the second air exchange port 163, so that the air exchange and back-suction channel has a certain capillary force, can continuously back-suck the excess liquid matrix in the atomization cavity 121, and send it into the liquid storage cavity 111 through the first air exchange port 162 for recycling, thereby avoiding excessive accumulation of liquid matrix in the atomization cavity 121 from blocking the air exchange and back-suction channel, ensuring smooth air exchange, and reducing the risk of dry burning and film breakage. It can be understood that, in other embodiments, the air exchange and back-suction channel can also be formed between the inner wall surface of the atomization housing 110 and the outer wall surface of the atomization base.

[0047] In this embodiment, the shapes of the first air exchange port 162 and the second air exchange port 163 are both rectangular or quasi-rectangular, which is convenient for processing. Among them, the length of the second air exchange port 163 is not greater than 1.5 mm, and the height of the second air exchange port 163 is not greater than 1.5 mm to ensure that the area of the second air exchange port 163 is less than 2.5 mm 2, so that it has capillary force. Understandably, in other embodiments, the shapes of the first air vent 162 and the second air vent 163 are not limited to rectangles or rectangle-like shapes, and can be designed in any shape.

[0048] As Figure 5 shown, in some embodiments, the first air vent 162 is opened on the inner wall of the liquid-down channel 161, and the height of the first air vent 162 is higher than the height of the liquid-absorbing surface of the liquid absorber 150. It should be noted that the "height of the first air vent 162 is higher than the height of the liquid-absorbing surface of the liquid absorber 150" here refers to the height of the lowermost lower edge in the first air vent 162, which is higher than the upper edge of the top of the liquid-absorbing surface of the liquid absorber 150. Since the position of the first air vent 162 is closer to the liquid storage cavity 111 than the liquid-absorbing surface of the liquid absorber 150, when the electronic atomization device 10 is placed horizontally, the gas bubbles entering from the first air vent 162 will be directly sucked into the liquid storage cavity 111, avoiding the bubbles getting stuck at the liquid-absorbing surface and preventing the normal liquid-down of the liquid matrix, and reducing the risk of dry burning and film breakage.

[0049] In some embodiments, the height difference between the lower edge of the first air vent 162 and the upper edge of the liquid-absorbing surface of the liquid absorber 150 is h, and h is greater than 0.5 mm. In this positional relationship, it can be further ensured that the gas bubbles entering from the first air vent 162 will not get stuck at the liquid-absorbing surface.

[0050] In some embodiments, in order to prevent the liquid matrix accumulated in the atomization cavity 121 from blocking the second air vent 163 and affecting the air exchange process, the height of the second air vent 163 is set to be higher than the bottom of the atomization cavity 121.

[0051] In some embodiments, at least one first capillary groove 164 is provided. As Figure 5 , Figure 6 and Figure 9 shown, in this embodiment, two first capillary grooves 164 are provided. It can be understood that in other embodiments, one, three, four or other numbers of first capillary grooves 164 can also be provided. Further, in some embodiments, when more than two first capillary grooves 164 are provided, the multiple first capillary grooves 164 are symmetrically arranged.

[0052] In some embodiments, the cross-sectional area of the first capillary groove 164 should be greater than or equal to 0.18 mm 2, to avoid blockage caused by setting the cross-sectional area of the first capillary groove 164 too small, and ensure the smooth progress of air exchange and back suction. Further, in some embodiments, the cross-sectional shape of the first capillary groove 164 is rectangular or quasi-rectangular. Among them, the length of the long side of the cross-section of the first capillary groove 164 is not less than 0.6 mm, and the length of the short side of the cross-section of the first capillary groove 164 is not less than 0.3 mm. It can be understood that, in other embodiments, the cross-sectional shape of the first capillary groove 164 is not limited to rectangular or quasi-rectangular, and it can be designed into any shape.

[0053] In some embodiments, the first capillary groove 164 can be formed by the depression of the outer surface of the heating base 120 or the heating cover 160. As Figure 9 shown is the structural diagram when the first capillary groove 164 is arranged on the outer surface of the heating cover 160. Further, as Figure 2 and Figure 4 shown, a silica gel sleeve 170 is sleeved outside the heating cover 160. The silica gel sleeve 170 surrounds the first air exchange port 162, the second air exchange port 163 and the first capillary groove 164, ensuring the sealing of the air exchange and back suction channels, and thus ensuring its normal function of balancing air pressure and recovering the liquid matrix. It can be understood that, in other embodiments, the formation structure of the air exchange and back suction channels is not limited to the above specific embodiments. For example, part or all of the air exchange and back suction channels can also be formed by the depression of the inner wall surface of the atomization housing 110, or can be formed by the common depression of the inner wall surface of the atomization housing 110 and the outer wall surface of the heating cover 160.

[0054] As Figure 4 shown, in some embodiments, a plurality of second capillary grooves 122 are arranged in the atomization cavity 121. The second capillary grooves 122 communicate with the second air exchange port 163 in the air exchange and back suction channels. Among them, in this embodiment, the second capillary grooves 122 are separated by a plurality of equally spaced inserted plates, and the gaps between adjacent inserted plates form the second capillary grooves 122, and the cross-sectional area of each second capillary groove 122 is set to be less than or equal to 0.5 mm 2 , so as to make it have capillary force. When the excess liquid matrix in the atomization cavity 121 flows to the second capillary grooves 122, the second capillary grooves 122 attract and gather the excess liquid matrix in the atomization cavity 121 through capillary force, and then send it back to the liquid storage cavity 111 through the air exchange and back suction channels. By setting the second capillary grooves 122, the efficiency of recovering the excess liquid matrix in the atomization cavity 121 can be improved. Further, the second capillary grooves 122 can also contact and conduct the atomization core, and directly recover the liquid matrix flowing out from the atomization core.

[0055] As Figures 6 to 8As shown, in this embodiment, the atomization base includes a heating base 120 and a heating cover 160. The second capillary groove 122 is provided on both the heating base 120 and the heating cover 160. Among them, the second capillary groove 122 provided on the heating base 120 communicates with the bottom of the atomization chamber 121 and the second air exchange port 163, and the second capillary groove 122 provided on the heating cover 160 communicates with the atomization core and the second air exchange port 163. Moreover, the second capillary groove 122 on the heating base 120 and the second capillary groove 122 on the heating cover 160 are in one-to-one relative fit. In other embodiments, the second capillary groove 122 can be provided only on the heating base 120, or the second capillary groove 122 can also be provided only on the heating cover 160. No matter which way the second capillary groove 122 is arranged, it ultimately achieves the same effect of attracting and aggregating the liquid matrix.

[0056] As Figure 7 shown, in some embodiments, in order to make the liquid matrix in the atomization chamber 121 flow more easily towards the second capillary groove 122, the bottom of the heating base 120 is set to slope downward towards the second capillary groove 122, and the liquid matrix in the atomization chamber 121 is more likely to flow towards the second capillary groove 122 under the action of gravity.

[0057] In some embodiments, the atomization assembly may further include two electrode assemblies 131 provided on the heating base 120. The two electrode assemblies 131 are respectively electrically connected to the two poles of the heating element 130. Each electrode assembly 131 may include an electrode post and / or an electrode connecting piece. One end of the electrode assembly 131 can abut against the heating element 130 and conduct electricity, and the other end of the electrode assembly 131 is at least partially exposed on the bottom surface of the heating base 120, facilitating connection and conduction with the power supply device 200.

[0058] In some embodiments, the power supply device 200 is provided with a battery bracket 220 for installing and fixing the battery. The battery bracket 220 is located inside the power supply housing 210. The control circuit can be installed on at least one of the inner wall of the power supply housing 210, the heating base 120, or the battery bracket 220. Further, in some embodiments, the battery bracket 220 can be integrally provided with the heating base 120, and the control circuit is provided on the heating base 120, as Figure 2 and Figure 6 shown. Adopting this structure can reduce the number of parts and lower the manufacturing cost.

[0059] It can be understood that the above technical features can be combined and used arbitrarily without limitation.

[0060] The above embodiments only represent the specific implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, the above technical features can be freely combined, and several deformations and improvements can also be made, which all fall within the protection scope of the present application. Therefore, all equivalent transformations and modifications made to the scope of the claims of the present application shall fall within the scope covered by the claims of the present application.

Claims

1. An atomizer, characterized in that, It includes an atomizing housing and an atomizing component at least partially received in the atomizing housing. A liquid storage cavity is provided in the atomizing housing, and an atomizing cavity and an atomizing core are provided in the atomizing component. A ventilation and back-suction channel for communicating the liquid storage cavity with the atomizing cavity is provided on the atomizing component. The ventilation and back-suction channel includes a first ventilation port communicating with the liquid storage cavity, a second ventilation port opened on the atomizing cavity, and a first capillary groove communicating the first ventilation port and the second ventilation port. A second capillary groove is provided in the atomizing cavity, and the second capillary groove communicates with the ventilation and back-suction channel.

2. The atomizer according to claim 1, characterized in that, The atomizing component includes a heating base and a heating cover, and there is at least one second capillary groove. The second capillary groove is provided on the heating base, or / and the second capillary groove is provided on the heating cover.

3. The atomizer according to claim 2, wherein, When the second capillary groove is provided on the heating base, the second capillary groove communicates the bottom of the atomizing cavity and the second ventilation port.

4. The atomizer according to claim 2, characterized in that, When the second capillary groove is provided on the heating cover, the second capillary groove communicates the atomizing core and the second ventilation port.

5. The atomizer according to claim 1, wherein The area of the second air vent is less than 2.5 mm 2 .

6. The atomizer according to claim 5, characterized in that, The cross-sectional shape of the second ventilation port is rectangular, the length of the second ventilation port is less than or equal to 1.5 mm, and the height of the second ventilation port is less than or equal to 1.5 mm.

7. The atomizer according to claim 1, wherein The cross-sectional area of the first capillary groove is greater than or equal to 0.18 mm 2 .

8. The atomizer according to claim 7, characterized in that, The cross-sectional shape of the first capillary groove is rectangular, the length of the long side of the cross-section of the first capillary groove is not less than 0.6 mm, and the length of the short side of the cross-section of the first capillary groove is not less than 0.3 mm.

9. The atomizer according to claim 1, characterized in that, The height of the second ventilation port is higher than the bottom of the atomizing cavity.

10. An electronic atomization device, characterized in that, An atomizer according to any one of claims 1 to 9 is included. The electronic atomizing device further includes a battery component, and the battery component is connected to one end of the atomizer and electrically connected to the atomizer.

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