CN220800035U - Electronic atomizing device - Google Patents

Abstract

The application discloses an electronic atomization device, which comprises an atomization assembly and a shell assembly, wherein the atomization assembly is provided with an atomization cavity; the atomizing assembly is for atomizing an aerosol-generating substrate to generate an aerosol; the shell component is provided with an air inlet channel for accommodating the atomizing component; the air inlet air passage is communicated with the atomizing cavity and used for guiding external air into the atomizing cavity; wherein the air inlet airway comprises a porous channel; the porous channel comprises a first through hole and a second through hole, the plurality of second through holes are annularly arranged on the periphery of the first through hole, and the aperture of the first through hole is smaller than that of the second through hole. According to the application, the porous channels arranged in the air passage of the atomization assembly are arranged as the two layers of through holes with different pore sizes, so that the air flow speed of the porous channels in the suction process is reduced, the noise in the suction process is reduced, and the suction experience of a user is improved.

Description

Electronic atomizing device

Technical Field

The application relates to the technical field of atomization, in particular to an electronic atomization device.

Background

In the related art, in an electronic atomization assembly, in order to improve the uniformity and the continuity of distribution of incoming air and improve the atomization effect, a porous channel structure is generally added in an air passage. However, with such a configuration of the airway, the maximum aerodynamic noise generated by the user's suction tends to be concentrated near the porous channel and transmitted to the user through the air, resulting in a reduced user's suction experience.

Disclosure of utility model

In view of this, the present application provides an electronic atomization device to solve the problem of large suction noise and influence on user experience in the prior art.

In order to solve the technical problems, the first technical scheme provided by the application is as follows: an electronic atomizing device is provided, comprising an atomizing assembly and a shell assembly, wherein the atomizing assembly is provided with an atomizing cavity; the atomizing assembly is for atomizing an aerosol-generating substrate to generate an aerosol; the shell component is provided with an air inlet channel for accommodating the atomization component; the air inlet air passage is communicated with the atomization cavity and used for guiding external air into the atomization cavity; wherein the air intake airway comprises a porous channel; the porous channel comprises: the first through holes and the second through holes are formed in the periphery of the first through holes in a surrounding mode, and the aperture of the first through holes is smaller than that of the second through holes.

Optionally, the aperture of the second through hole is greater than 0.4mm and less than or equal to 2mm, and the aperture of the first through hole is greater than or equal to 0.4mm and less than 2mm.

Optionally, an aperture ratio of each second through hole to the first through hole is 1.3-1.6; the center distance between each second through hole and the first through hole is 0.5-2.5 mm.

Optionally, the second through hole is the same as the first through hole in length; the ratio of the length of the first through hole to the aperture of the first through hole is 5-6.

Optionally, the number of the first through holes is 1, and the number of the second through holes is 4-12 and distributed at equal intervals.

Optionally, an included angle formed by the centers of two adjacent second through holes and the central connecting line of the first through holes is 45-75 degrees.

Optionally, the included angle formed by the centers of two adjacent second through holes and the central connecting line of the first through holes is 60 degrees.

Optionally, the porous channel is located at an air inlet end of the air inlet channel.

Optionally, the housing assembly includes: the device comprises a first sleeve, a second sleeve and an end cover, wherein the first sleeve is provided with an atomization channel and a liquid storage bin, and the liquid storage bin is used for storing the aerosol generating substrate; the atomizing channel is communicated with the atomizing cavity; the second sleeve part is sleeved on the periphery of the first sleeve; the end cover is arranged at one end of the second sleeve, which is far away from the first sleeve; the end cover is connected with the second sleeve in a matched manner, and is partially sleeved in the second sleeve; wherein the porous channel is disposed on the end cap.

Optionally, the end cover comprises a side wall and a bottom wall which are connected with each other, and the side wall is sleeved in the second sleeve; the bottom wall is recessed to a direction close to the first sleeve to form a recessed part, and the recessed part comprises an annular side wall and a top wall; the first through holes and the plurality of second through holes are formed in the top wall.

Optionally, the first through hole and the plurality of second through holes are through holes formed in the top wall.

The application has the beneficial effects that: unlike the prior art, the electronic atomizing device of the present application comprises an atomizing assembly and a housing assembly, the atomizing assembly having an atomizing chamber; the atomizing assembly is for atomizing an aerosol-generating substrate to generate an aerosol; the shell component is provided with an air inlet channel for accommodating the atomizing component; the air inlet air passage is communicated with the atomizing cavity and used for guiding external air into the atomizing cavity; wherein the air inlet airway comprises a porous channel; the porous channel comprises a first through hole and a second through hole, the plurality of second through holes are annularly arranged on the periphery of the first through hole, and the aperture of the first through hole is smaller than that of the second through hole. According to the application, the porous channels arranged in the air passage of the atomization assembly are arranged as the two layers of through holes with different pore sizes, so that the air flow speed of the porous channels in the suction process is reduced, the noise in the suction process is reduced, and the suction experience of a user is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of an external structure of an electronic atomizing device according to the present application;

FIG. 2 is a schematic cross-sectional view of an electronic atomizing device according to the present disclosure;

FIG. 3 is a schematic perspective view of an end cap according to the present application;

FIG. 4 is a schematic top view of an end cap according to the present application;

FIG. 5 is a schematic cross-sectional view of an end cap provided by the present application;

FIG. 6 is a schematic view of a first embodiment of a recess provided by the present application;

FIG. 7 is a schematic view of a second embodiment of a recess provided by the present application;

FIG. 8 is a schematic view of a third embodiment of a recess provided by the present application;

FIG. 9 is a schematic diagram of aerodynamic noise distribution of an intake airway of a comparative example provided by the present application;

FIG. 10 is a schematic diagram of aerodynamic noise distribution of an air intake duct of example one provided by the present application;

fig. 11 is a schematic diagram of aerodynamic noise distribution of an air intake duct according to example two provided by the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms "first," "second," and "first," herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "first", "second", or "first" may include at least one such feature, either explicitly or implicitly. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The present inventors have studied to find that: the magnitude of aerodynamic noise and the magnitude of the velocity gradient during air flow are positively correlated. When the electronic atomization assembly air passage is added into the porous channel structure, the position is always the position with the smallest cross-sectional area of the whole air passage. The incoming air velocity gradient at the porous channel during aspiration tends to be greatest, and thus the porous channel becomes the source of aerodynamic noise, resulting in a reduced user's aspiration experience.

Referring to fig. 1 and 2, fig. 1 is a schematic diagram of an external structure of an electronic atomization device according to the present application; fig. 2 is a schematic cross-sectional view of an electronic atomizing device according to the present application.

The electronic atomizing device 100 provided by the application can be used for atomizing liquid matrixes. The electronic atomizing device 100 includes an atomizing assembly 20 and a housing assembly 10, the atomizing assembly 20 is configured to store a liquid aerosol-generating substrate, such as a liquid substrate including a liquid medicine, a plant leaf liquid, etc., and to atomize the aerosol-generating substrate to form an aerosol for inhalation by a user. The atomizing assembly 20 is particularly useful in a variety of applications, such as medical, cosmetic, recreational, and the like. The electronic atomizing device 100 may also include a battery 40, a cradle 30, a control circuit (not shown), an air flow sensor (not shown), and the like. The battery 40 is used to power the atomizing assembly 20 to enable the atomizing assembly 20 to atomize the aerosol-generating substrate to form an aerosol; an airflow sensor, such as a microphone, is used to detect airflow variations in the electronic atomizing device 100, and a control circuit controls whether the atomizing assembly 20 is operating based on the airflow variations detected by the airflow sensor. The atomizing assembly 20 and the battery 40 can be integrally arranged or can be detachably connected, and the atomizing assembly is specifically designed according to the requirement.

As shown in fig. 2, the housing assembly 10 includes a first sleeve 11, a second sleeve 12, and an end cover 13, wherein the second sleeve 12 is partially sleeved on the periphery of the first sleeve 11; an end cap 13 is provided at an end of the second sleeve 12 remote from the first sleeve 11. The end cover 13 is connected with the second sleeve 12 in a matching way, and is partially sleeved in the second sleeve 12. For example, the end cap 13 and the second sleeve 12 may be engaged or screwed.

In an embodiment, the first sleeve 11 has an atomizing channel 111 and a reservoir 112, the reservoir 112 may be disposed around the atomizing channel 111, the reservoir 112 is for storing aerosol-generating substrate, the atomizing channel 111 is for passing aerosol generated after the atomizing assembly 20 is atomized, the housing assembly 10 may further include a suction nozzle 14, and the suction nozzle 14 is disposed at an end of the first sleeve 11 remote from the second sleeve 12. The suction nozzle 14 and the first sleeve 11 may be of an integrated structure or a split structure, and are specifically set as required.

In one embodiment, as shown in fig. 2, an atomizing assembly 20 is used to atomize an aerosol-generating substrate to generate an aerosol; the atomizing assembly 20 has an atomizing chamber 21, and the atomizing passage 111 communicates with the atomizing chamber 21, and aerosol generated after atomization by the atomizing assembly 20 can enter the atomizing passage 111 through the atomizing chamber 21 and further enter the mouthpiece 14 through the atomizing passage 111 for inhalation by a user.

Specifically, the atomizing assembly 20 includes a heating element 22, an atomizing base 23, and a sealing member 24 disposed between the atomizing base 23 and the liquid storage bin 112, wherein the heating element 22 is disposed on the atomizing base 23, and an atomizing cavity 21 is formed between the heating element 22 and a sidewall 131 of the atomizing base 23. The seal 24 abuts the inner sidewall 131 of the second sleeve 12 to prevent leakage of aerosol-generating substrate within the reservoir 112. The sealing member 24 is provided with an opening (not shown) so that the aerosol-generating substrate in the reservoir 112 flows into the heating element 22 through the opening and is heated and atomized by the heating element 22. The housing assembly 10 defines a receiving chamber 101 therein, the receiving chamber 101 being adapted to receive the atomizing assembly 20. The housing assembly 10 also has an air inlet air passage 15, the air inlet air passage 15 being in communication with the atomizing chamber 21 for introducing external air into the atomizing chamber 21. In other embodiments, the atomizing assembly 20 of the present application may also be configured to atomize by ultrasonic atomization, air atomization, etc., and is not limited to the heating atomization.

In one embodiment, as shown in fig. 2, the air intake air passage 15 includes a porous passage 16, and the porous passage 16 is used to reduce the flow rate of air entering the air intake air passage 15, thereby reducing noise generated by a user during the suction process. The porous channel 16 may be disposed at any position of the air inlet passage 15 of the atomizing chamber 21, and in this embodiment, the porous channel 16 is disposed at the air inlet end 151 of the air inlet passage 15 is taken as an example. The porous passage 16 is disposed at the air inlet end 151 of the air inlet duct 15 to reduce the flow rate of air entering the air inlet duct 15, thereby reducing noise generated during the suction process. It will be appreciated that the porous channel 16 is connected to the air inlet end 151 of the air inlet channel 15, while the atomizing channel 111 and the mouthpiece 14 are located at the air outlet end 152, and that the air inlet channel 15 and the atomizing channel 111 are connected to the two ends of the atomizing chamber 21, respectively, and are in fluid communication through the atomizing chamber 21. Air entering through the air inlet air passage 15 and aerosol-generating substrate within the reservoir 112 are atomized by the atomizing assembly 20 to generate aerosol which may be collected in the atomizing chamber 21 and further directed through the atomizing passage 111 and the mouthpiece 14 into the user's mouth.

Referring to fig. 3 to 5, fig. 3 is a schematic perspective view of an end cap according to the present application; FIG. 4 is a schematic top view of an end cap according to the present application; FIG. 5 is a schematic cross-sectional view of an end cap provided by the present application.

In this embodiment, the porous channel 16 includes two layers of through holes, namely, a first through hole 161 and a second through hole 162, and the plurality of second through holes 162 are disposed around the periphery of the first through hole 161, and the aperture d of the first through hole 161 is different from the aperture d of the second through hole 162, in this embodiment, the aperture d of the first through hole 161 is preferably smaller than the aperture d of the second through hole 162. The first through hole 161 and the plurality of second through holes 162 of the porous channel 16 are formed in the end cover 13.

In this embodiment, the end cap 13 includes a side wall 131 and a bottom wall 132 that are connected to each other, wherein the side wall 131 of the end cap 13 is sleeved in the second sleeve 12. The bottom wall 132 is recessed in a direction approaching the first sleeve 11 to form a recess 133, and the recess 133 includes an annular side wall 1332 and a top wall 1331, and the first through hole 161 and the plurality of second through holes 162 are formed in the top wall 1331.

Specifically, as shown in fig. 5, the top wall 1331 includes a first bottom surface 13311 and a second bottom surface 13312 that are parallel to each other, a distance between the first bottom surface 13311 and the second bottom surface 13312 is a length of the porous channel 16, and a distance between the first bottom surface 13311 and the second bottom surface 13312 is a length H of the first through hole 161 and the second through hole 162. In this embodiment, the first through hole 161 and the second through holes 162 are through holes formed in the top wall 1331. The through hole may be a through hole perpendicular to the first bottom surface 13311 and the second bottom surface 13312, or may be an oblique through hole extending from the first bottom surface 13311 to the second bottom surface 13312. In other embodiments, the first through hole 161 and the plurality of second through holes 162 may be curved or the sidewall 131 may have irregular through holes with protrusions or depressions. In this embodiment, the first through hole 161 and the plurality of second through holes 162 are provided as through holes perpendicular to the first bottom surface 13311 and the second bottom surface 13312 for cost saving and ease of mold opening.

The aperture of the second through hole 162 is greater than 0.4mm and less than or equal to 2mm, and the aperture d of the first through hole 161 is greater than or equal to 0.4mm and less than 2mm. The aperture ratio of each of the second through holes 162 to the first through hole 161 is 1.3 to 1.6.

Specifically, as shown in fig. 5, since the aperture of the second through hole 162 needs to be larger than the aperture d of the first through hole 161, the value of the second through hole 162 is smaller than 0.4mm and not more than 2mm. While the aperture d of the first through hole 161 may be 0.4mm or more, but needs to be less than 2mm to satisfy the size relationship of the first through hole 161 and the second through hole 162. Meanwhile, in the present embodiment, the aperture ratio of each second through hole 162 to the first through hole 161 is between 1.3 and 1.6, and the sizes of the plurality of second through holes 162 may be the same or different.

In one embodiment, the apertures of the plurality of second through holes 162 may each be 0.6mm. In another embodiment, the apertures of the second through holes 162 may be 0.5mm, 0.6mm, 0.7mm, etc. as long as the aperture ratio of the second through holes 162 to the first through holes 161 satisfies 1.3 to 1.6.

In addition, as shown in fig. 4, the center distance L between each of the second through holes 162 and the first through hole 161 is 0.5mm to 2.5mm. It will be appreciated that, since the plurality of second through holes 162 are disposed around the first through hole 161, the center lines of the plurality of second through holes 162 are on the concentric circle of the first through hole 161, and the size of the concentric circle formed by the center lines of the second through holes 162 and the center distance L of the first through hole 161 have an effect on the air flow velocity entering the air intake duct 15, and thus have an effect on the noise level generated during the suction process. That is, the center distance L of the concentric circle formed by the center of the first through hole 161 and the center line of the plurality of second through holes 162 is different, and the acoustic coherence is different, so that the noise reduction effect is also different. Therefore, in order to maximize the noise reduction effect of the porous passage 16 during the suction, the center-to-center distance L of the concentric circle formed by the center of the first through hole 161 and the center of the plurality of second through holes 162, which is connected, is set to 0.5mm to 2.5mm in the present embodiment.

The length H of the second through hole 162 is the same as the length H of the first through hole 161. As above, the length H of the first through hole 161 and the length H of the second through hole 162 are perpendicular distances between the first bottom surface 13311 and the second bottom surface 13312. In the present embodiment, the ratio of the length H of the first through hole 161 or the length H of the second through hole 162 to the aperture d of the first through hole 161 is between 5 and 6. The inventor researches find that the noise reduction effect is optimal when the ratio of H to d is 5-6, no obvious gain effect is generated when the ratio is further increased, and the noise reduction effect is not ideal when the ratio is less than 5-6.

Referring to fig. 6 to 8, fig. 6 is a schematic structural view of a first embodiment of a recess provided in the present application; FIG. 7 is a schematic view of a second embodiment of a recess provided by the present application; fig. 8 is a schematic structural view of a third embodiment of a recess provided in the present application.

In the first embodiment, the number of the first through holes 161 is 1, and the number of the second through holes 162 is 4 to 12 and is equally spaced. That is, the included angle formed by the central lines of the adjacent two second through holes 162 and the central line of the first through hole 161 is 30 ° to 90 °, and the plurality of second through holes 162 are arranged at equal intervals. In this embodiment, the second through holes 162 may be disposed at equal intervals, and the plurality of second through holes 162 may be located on concentric circles with the center of the first through hole 161 as the center.

For example, as shown in fig. 6, the number of second through holes 162 may be 6, the included angles θ formed by the connecting lines between the centers of two adjacent second through holes 162 and the center of the first through hole 161 are all 60 °, the centers of the plurality of second through holes 162 are located on the same concentric circle, and the plurality of second through holes 162 are disposed around the first through hole 161.

In the second embodiment, the number of the first through holes 161 is 1, and the number of the second through holes 162 is also 4 to 12 and equally spaced. However, in the present embodiment, the aperture sizes of the second through holes 162 may be different as long as the aperture ratio of the second through holes 162 to the first through holes 161 is between 1.3 and 1.6. As shown in fig. 7, 6 second through holes 162 disposed at equal intervals are provided in different sizes as long as the center of each second through hole 162 is located on a concentric circle centered on the center of the first through hole 161. In this embodiment, the included angle θ formed by the central lines of the centers of two adjacent second through holes 162 and the center of the first through hole 161 is also 60 °.

In the third embodiment, the number of the first through holes 161 is 1, and the number of the second through holes 162 is 4 to 12 and may be distributed at unequal intervals. The included angle formed by the connection line between the centers of two adjacent second through holes 162 and the center of the first through hole 161 may be 45 ° to 75 °. In the present embodiment, the second through holes 162 may be disposed at unequal intervals as long as the plurality of second through holes 162 are all located on a concentric circle centered on the center of the first through hole 161. For example, as shown in fig. 8, the second through holes 162 may be provided in 6, in which the angle α formed by the lines connecting the centers B1, B2 of the adjacent two second through holes 162 and the center a of the first through hole 161 is 45 °, in which the angle β formed by the lines connecting the centers B2, B3 of the adjacent two second through holes 162 and the center a of the first through hole 161 is 60 °, and the angle γ formed by the lines connecting the centers B3, B4 of the adjacent two second through holes 162 and the center a of the first through hole 161 is 75 °. It will be appreciated that the angle relative to angle α is also 45, the angle relative to angle β is also 60, and the angle relative to angle γ is also 75. In the present embodiment, the sizes of the plurality of second through holes 162 may be the same or different. The centers of the plurality of second through holes 162 thus disposed are located on the same concentric circle, and the noise reduction effect on the intake air passage 15 can be also achieved by the manner in which the plurality of second through holes 162 surround the first through hole 161.

In other embodiments, the sizes of the plurality of second through holes 162 may be the same or different, and the plurality of second through holes 162 may be arranged at equal intervals or unequal intervals, so long as the size relationship and the aperture relationship between the second through holes 162 and the first through holes 161 are satisfied, which is not limited in the present application.

Referring to fig. 9 to 11, fig. 9 is a schematic diagram illustrating aerodynamic noise distribution of an intake air duct according to a comparative example provided by the present application; FIG. 10 is a schematic diagram of aerodynamic noise distribution of an air intake duct of example one provided by the present application; fig. 11 is a schematic diagram of aerodynamic noise distribution of an air intake duct according to example two provided by the present application.

As shown in fig. 9, for example, the structure-optimized aerodynamic noise distribution was not adopted in the comparative example, in which the aperture d of the first through hole 161 is the same as the aperture d of the second through hole 162, both of which are 0.55mm; the length H of the first through hole 161 and the second through hole 162 is 0.8mm, the ratio of H to d is equal to about 1.45, and the maximum noise is 82.09dB.

As shown in fig. 10, in example one, the aperture ratio of the second through hole 162 to the first through hole 161 was changed only in comparison with the comparative example, the aperture d of the first through hole 161 was set to 0.46mm, and the aperture of the second through hole 162 was set to 0.72mm; the lengths H of the first through hole 161 and the second through hole 162 are still 0.8mm, and the ratio of H to d is equal to about 1.74, and the maximum noise is 69.33dB. It can be seen that the maximum aerodynamic noise at the porous channel 16 of the intake air channel 15 is reduced by about 20%.

As shown in fig. 11, in example two, the aperture d of the first through hole 161 was set to 0.46mm and the aperture d of the second through hole 162 was set to 0.72mm by changing the apertures d of the second through hole 162 and the first through hole 161 and the lengths H of the second through hole 162 and the first through hole 161 simultaneously as compared with the comparative example; the length H of the first through hole 161 and the second through hole 162 is set to 2.6mm, and the ratio of H to d is equal to about 5.65, and the maximum noise is 60.86dB. Therefore, when the aperture and the length of the porous channel 16 are changed at the same time, the maximum aerodynamic noise at the porous channel 16 of the air inlet channel 15 is reduced by about 25%, and the best noise reduction effect can be achieved. The present inventors have further studied and found that the noise reduction effect is not significantly changed when the length of the porous passage 16 is further increased on the basis thereof.

The application discloses an electronic atomization device which comprises an atomization assembly and a shell assembly, wherein the atomization assembly is provided with an atomization cavity; the atomizing assembly is for atomizing an aerosol-generating substrate to generate an aerosol; the shell component is provided with an air inlet channel for accommodating the atomizing component; the air inlet air passage is communicated with the atomizing cavity and used for guiding external air into the atomizing cavity; wherein the air inlet airway comprises a porous channel; the porous channel comprises a first through hole and a second through hole, the plurality of second through holes are annularly arranged on the periphery of the first through hole, and the aperture of the first through hole is smaller than that of the second through hole. According to the application, the porous channels arranged in the air passage of the atomization assembly are arranged as the two layers of through holes with different pore sizes, so that the air flow speed of the porous channels in the suction process is reduced, the noise in the suction process is reduced, and the suction experience of a user is improved.

The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.

Claims (10)

1. An electronic atomizing device, comprising:

an atomizing assembly having an atomizing chamber; the atomizing assembly is for atomizing an aerosol-generating substrate to generate an aerosol;

A housing assembly having an air inlet passage for receiving the atomizing assembly; the air inlet air passage is communicated with the atomization cavity and used for guiding external air into the atomization cavity;

wherein the air intake airway comprises a porous channel; the porous channel comprises:

A first through hole;

The second through holes are annularly arranged on the periphery of the first through holes, and the aperture of the first through holes is smaller than that of the second through holes.

2. The electronic atomizing device according to claim 1, wherein,

The aperture of the second through hole is more than 0.4mm and less than or equal to 2mm, and the aperture of the first through hole is more than or equal to 0.4mm and less than 2mm.

3. The electronic atomizing device according to claim 2, wherein,

The aperture ratio of each second through hole to the first through hole is 1.3-1.6;

the center distance between each second through hole and the first through hole is 0.5-2.5 mm.

4. The electronic atomizing device of claim 1, wherein the second through hole is the same length as the first through hole; the ratio of the length of the first through hole to the aperture of the first through hole is 5-6.

5. The electronic atomizing device of claim 1, wherein the number of the first through holes is 1, and the number of the second through holes is 4-12 and is equally spaced.

6. The electronic atomizing device according to claim 1, wherein the angle formed by the center lines of the adjacent two second through holes and the center line of the first through hole is 45 ° to 75 °.

7. The electronic atomizing device of claim 6, wherein centers of two adjacent second through holes form an angle of 60 ° with a center line of the first through holes.

8. The electronic atomizing device of any one of claims 1 to 7, wherein the porous channel is located at an inlet end of the inlet air passage.

9. The electronic atomizing device of claim 8, wherein the housing assembly comprises:

A first cannula having an aerosolization channel and a reservoir for storing the aerosol-generating substrate; the atomizing channel is communicated with the atomizing cavity;

the second sleeve part is sleeved on the periphery of the first sleeve;

The end cover is arranged at one end, far away from the first sleeve, of the second sleeve; the end cover is connected with the second sleeve in a matched manner, and is partially sleeved in the second sleeve; wherein the porous channel is disposed on the end cap.

10. The electronic atomizing device of claim 9, wherein the end cap includes a sidewall and a bottom wall that are connected to each other, the sidewall being nested within the second sleeve; the bottom wall is recessed to a direction close to the first sleeve to form a recessed part, and the recessed part comprises an annular side wall and a top wall; the first through holes and the plurality of second through holes are formed in the top wall.