Electronic atomization device

Abstract

The invention provides an electronic atomization device which is internally provided with a first air inlet channel, a second air inlet channel and a third air inlet channel which are sequentially communicated, and the first air inlet channel and the third air inlet channel are both located on the same side of the second air inlet channel. The first air inlet channel, the second air inlet channel and the third air inlet channel are all arranged on one side of the axial section of the center shaft of the electronic atomization device. An airflow channel at least comprising an atomization cavity is further arranged in the electronic atomization device, the third air inlet channel is communicated with the bottom end of the airflow channel, and the second air inlet channel is at least higher than the bottommost end of the airflow channel. When air enters the atomization cavity, the flow direction of the airflow in the first air inlet channel is opposite to that of the airflow in the third air inlet channel, and the second air inlet channel is at least higher than the bottommost end of the airflow channel, so that the airflow flowing into the atomization cavity can be relieved; therefore, the distribution of the flow field in the atomization cavity is more uniform, aerosol carried by the gas is more gathered, and the suction experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic atomization devices, and in particular to an electronic atomization device. Background Art

[0002] In current electronic atomization devices, negative pressure is generated inside the battery rod during inhalation, and external air enters from the bottom of the battery rod to activate the microphone, thereby activating the battery rod through the microphone to power the atomizer; moreover, air enters the atomization chamber of the atomizer and carries out aerosol for the user to inhale.

[0003] In the related art, the air first flows to the second air inlet channel of the silicone microphone, and then flows back into the atomization chamber through a 90° offset. However, due to the offset design of the second air inlet channel of the silicone microphone and the atomization chamber, the air will have a local reflux, and the flow field of the atomization chamber is unevenly distributed and biased to one side, resulting in a relatively scattered aerosol carried by the air, and a poor inhalation experience. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an electronic atomization device, aiming to solve the problem of uneven flow field distribution in the atomization chamber of the electronic atomization device in the related art.

[0005] In order to solve the above technical problems, the present invention provides an electronic atomization device, which is provided with a first air inlet channel, a second air inlet channel and a third air inlet channel which are connected in sequence, the first air inlet channel and the third air inlet channel are both located on the same side of the second air inlet channel, and the first air inlet channel, the second air inlet channel and the third air inlet channel are all located on one side of the axial cross-section of the central axis of the electronic atomization device; the electronic atomization device is also provided with an air flow channel which at least includes an atomization chamber, the third air inlet channel is connected to the bottom end of the air flow channel, and the second air inlet channel is at least higher than the bottom end of the air flow channel.

[0006] Optionally, the air flow channel further includes a buffer space located at the bottom end of the atomization chamber, and the buffer space is communicated with the third air inlet channel.

[0007] Optionally, a communication channel is provided between the third air inlet channel and the buffer space, the communication channel being connected to the third air inlet channel and the buffer space respectively.

[0008] Optionally, a throttle port is provided between the third air intake passage and the second air intake passage, or the third air intake passage at least includes a throttle passage.

[0009] Optionally, an angle between the first air intake channel and the second air intake channel, and an angle between the second air intake channel and the third air intake channel ranges from 45° to 120°.

[0010] Optionally, the first air intake passage is parallel to the third air intake passage, or the first air intake passage is parallel to the third air intake passage and perpendicular to the second air intake passage.

[0011] Optionally, the length of the connecting channel is greater than or equal to 1.5 mm, and the angle between the connecting channel and the airflow channel is in the range of 45°-90°.

[0012] Optionally, a center axis distance between the second air inlet channel and the connecting channel is greater than or equal to 1.2 mm.

[0013] Optionally, the electronic atomization device includes an oil cup, in which a liquid storage chamber and an installation chamber isolated from the liquid storage chamber are provided. The installation chamber is located at the bottom end of the oil cup and is connected to the buffer space, and the connecting channel is a part of the installation chamber.

[0014] Optionally, the electronic atomization device further includes:

[0015] A suction nozzle assembly is arranged at the top of the oil cup;

[0016] A vent pipe, both ends of which are fixed to the suction nozzle assembly and the oil cup respectively, the vent pipe is provided with the air flow channel, the first air inlet channel, the second air inlet channel and the third air inlet channel are all located on one side of the central axis cross section of the vent pipe; and,

[0017] An atomizing core is fixed in the ventilation pipe, and the atomizing core is provided with the atomizing cavity.

[0018] Compared with the related art, the electronic atomization device in the present invention has the following beneficial effects: the third air inlet channel is connected to the bottom end of the airflow channel, the airflow channel includes an atomization chamber, and when the atomization chamber is inlet, the flow direction of the airflow in the first air inlet channel is opposite to the flow direction of the airflow in the third air inlet channel, and the second air inlet channel is at least higher than the bottom end of the airflow channel. On the one hand, it can buffer the airflow flowing into the atomization chamber, so that the flow field distribution in the atomization chamber is more uniform, and the aerosol carried by the gas is more concentrated, which improves the suction experience; on the other hand, the condensate is not easy to fall into the air inlet channel, which is conducive to avoiding the condensate blocking the air inlet channel. The first air inlet channel, the second air inlet channel and the third air inlet channel are all arranged on one side of the axial cross section of the central axis of the electronic atomization device, and the length of the second air inlet channel can be limited within a reasonable range, which is conducive to further improving the uniformity of the flow field in the atomization chamber and improving the suction experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. 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 paying any creative work.

[0020] Figure 1 It is an exploded schematic diagram of a nozzle assembly and a housing in an electronic atomization device provided in an embodiment of the present invention;

[0021] Figure 2 is a cross-sectional view of an electronic atomization device provided by an embodiment of the present invention from one perspective;

[0022] Figure 3 yes Figure 2 A magnified view of detail A;

[0023] Figure 4 is a cross-sectional view of the electronic atomization device provided by an embodiment of the present invention from another perspective;

[0024] Figure 5 is a schematic diagram of the structure of an oil cup in an electronic atomization device provided by an embodiment of the present invention;

[0025] Figure 6 is an exploded view of an electronic atomization device provided by an embodiment of the present invention;

[0026] Figure 7 1 is a schematic diagram comparing flow field distribution and velocity vectors of Scheme 1 and Scheme 2 in an embodiment of the present invention;

[0027] Figure 8 1 is a schematic diagram comparing flow field distribution and velocity cloud of Scheme 1 and Scheme 2 in an embodiment of the present invention;

[0028] Fig. 9 Schematic diagram of streamline comparison between Scheme 1 and Scheme 2 in the embodiment of the present invention.

[0029] In the accompanying drawings, each figure mark represents: 1, oil cup; 11, liquid storage chamber; 12, first air inlet channel; 121, air inlet groove; 13, second air inlet channel; 14, third air inlet channel; 141, throttling channel; 142, air inlet; 15, connecting channel; 2, ventilation pipe; 21, air flow channel; 211, atomization chamber; 212, buffer space; 3, shell; 31, shell; 32, bottom cover; 321, air inlet hole; 4, button assembly; 41, button; 42, button silicone; 43, switch circuit board; 44, air inlet gap; 5, suction nozzle assembly; 51, suction nozzle; 511, exhaust channel; 52, sealing silicone; 53, oil-absorbing cotton; 6, atomization core; 61, heating wire; 62, oil-conducting cotton; 7, power supply; 8, electrode; 9, electrode silicone; 10, light-conducting silicone; 20, control board. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments 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, but are not to be construed as limiting the present invention. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0031] 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] Example:

[0034] See also Figures 1 to 6An embodiment of the present invention provides an electronic atomization device, which is provided with a first air inlet channel 12, a second air inlet channel 13 and a third air inlet channel 14 which are connected in sequence, the first air inlet channel 12 and the third air inlet channel 14 are both located on the same side of the second air inlet channel 13, and the first air inlet channel 12, the second air inlet channel 13 and the third air inlet channel 14 are all located on one side of the axial cross-section of the central axis of the electronic atomization device; the electronic atomization device is also provided with an air flow channel 21 which at least includes an atomization chamber 211, the third air inlet channel 14 is connected to the bottom end of the air flow channel 21, and the second air inlet channel 13 is at least higher than the bottom end of the air flow channel 21.

[0035] Since the first air inlet channel 12 and the third air inlet channel 14 are both located on the same side of the second air inlet channel 13, and the third air inlet channel 14 is connected to the bottom end of the air flow channel 21, the air flow channel 21 includes an atomizing chamber 211. When the atomizing chamber 211 is inlet, the flow direction of the air flow in the first air inlet channel 12 and the flow direction of the air flow in the third air inlet channel 14 are opposite, and the second air inlet channel 13 is at least higher than the bottom end of the air flow channel 21. On the one hand, the air flow flowing into the atomizing chamber 211 can be buffered, so that the flow field distribution in the atomizing chamber 211 is more uniform, and the aerosol carried by the gas is more concentrated, which improves the suction experience. On the other hand, the condensate is not easy to fall into the air inlet channel, which is conducive to avoiding the condensate blocking the air inlet channel. The first air inlet channel 12, the second air inlet channel 13 and the third air inlet channel 14 are all arranged on one side of the central axis cross section of the electronic atomization device, and the length of the second air inlet channel 13 can be limited to a reasonable range, which is conducive to further improving the uniformity of the flow field in the atomizing chamber 211 and improving the suction experience.

[0036] See also Figure 2 , Figure 3 and Figure 4 The air flow channel 21 also includes a buffer space 212 located at the bottom of the atomizing chamber 211, and the buffer space 212 is connected to the third air inlet channel 14. The buffer space 212 can further buffer the air flow into the atomizing chamber 211, thereby making the flow field distribution in the atomizing chamber 211 more uniform.

[0037] See also Figure 2 and Figure 3A connecting channel 15 is provided between the third air inlet channel 14 and the buffer space 212, and is connected to the third air inlet channel 14 and the buffer space 212, respectively. The connecting channel 15 can provide sufficient buffering before the airflow enters the buffer space, thereby further ensuring that the flow field in the atomizing chamber 211 is uniformly distributed. The length of the connecting channel 15 is greater than or equal to 1.5 mm, for example, 1.5 mm, 1.8 mm, 2 mm, 2.2 mm, 2.6 mm, etc. The angle between the connecting channel 15 and the airflow channel 21 is in the range of 45°-90°, for example, 45°, 50°, 60°, 75°, 90°, etc., preferably 90°. On the premise of ensuring that the gas flows smoothly from the connecting channel 15 into the airflow channel 21, the condensate can be prevented from falling directly into the connecting channel 15. The center axis spacing between the second air inlet channel 13 and the connecting channel 15 is greater than or equal to 1.2 mm, for example, 1.2 mm, 1.3 mm, 1.5 mm, 1.8 mm, 2 mm, etc. The larger the center axis spacing is, the more conducive it is to making the flow field in the atomizing chamber 211 uniformly distributed;

[0038] See also Figure 3 In some embodiments, a throttle is provided between the third air inlet channel 14 and the second air inlet channel 13, or the third air inlet channel 14 at least includes a throttle channel 141. The throttle or throttle channel 141 can adjust the airflow resistance to buffer the airflow. In a specific example, the third air inlet channel 14 includes a throttle channel 141. In the direction from the third air inlet channel 14 to the connecting channel 15, the aperture of the throttle channel 141 gradually increases, thereby reducing the airflow resistance of the airflow flowing in the third air inlet channel 14, so that the airflow in the third air inlet channel 14 flows more smoothly. Moreover, the aperture of the second air inlet channel 13 is larger than the aperture of the third air inlet channel 14, so that a pressure difference is generated between the second air inlet channel 13 and the third air inlet channel 14, which is conducive to the gas flowing from the second air inlet channel 13 to the third air inlet channel 14. According to actual needs, the third air intake passage 14 further includes an air intake port 142 respectively connected to the second air intake passage 13 and the throttling passage 141 , and the aperture of the air intake port 142 is smaller than the aperture of the throttling passage 141 .

[0039] It should be understood that when designing the air intake passage, the airflow resistance can be adjusted by changing the aperture size of the air intake port 142 and the variation trend of the aperture of the throttling passage 141 .

[0040] See also Figure 2 , Figure 3 and Figure 5, the angle between the first air inlet channel 12 and the second air inlet channel 13, and between the second air inlet channel 13 and the third air inlet channel 14 is in the range of 45°-120°, such as 45°, 60°, 90°, 100°, 120°, etc., preferably 90°, which is beneficial to the processing and forming of the air inlet channel and the adjustment of the air flow resistance. Among them, the first air inlet channel 12 is parallel to the third air inlet channel 14, or the first air inlet channel 12 is parallel to the third air inlet channel 14 and perpendicular to the second air inlet channel 13. In a specific example, the first air inlet channel 12, the second air inlet channel 13 and the third air inlet channel 14 are connected in an inverted U shape, that is, the angle between the first air inlet channel 12 and the second air inlet channel 13, and between the second air inlet channel 13 and the third air inlet channel 14 is 90°. The inverted U-shaped air inlet channel is conducive to realizing the air intake of the air flow channel 21 from top to bottom, so that the flow field in the air flow channel 21 is evenly distributed.

[0041] See also Figure 7 , Figure 8 and Fig. 9 In the figure, scheme 1 is to set an inverted U-shaped air inlet channel to intake air from top to bottom, and scheme 2 is to set the air inlet channel to be staggered with the center of the atomizing chamber 211 for multiple times. As can be seen from Figure 7, in scheme 1, the flow field in the atomizing chamber 211 is evenly distributed, while in scheme 2, there is local backflow, and the flow field in the atomizing chamber 211 is unevenly distributed and biased to one side. Figure 8 and Fig. 9 It can be seen that the flow field distribution in the atomization chamber 211 of Scheme 1 is more uniform, wherein the atomization chamber 211 is within the box.

[0042] See also Figure 2 and Figure 4 The electronic atomization device includes an oil cup 1, in which a liquid storage chamber 11 and a mounting chamber isolated from the liquid storage chamber 11 are provided. The mounting chamber is located at the bottom end of the oil cup 1 and is connected to the buffer space 212. The connecting channel 15 is a part of the mounting chamber, so that the space of the mounting chamber can be reasonably utilized; moreover, the third air inlet channel 14 is provided on one side of the mounting chamber, and the mounting chamber can provide sufficient space to facilitate the processing and forming of the third air inlet channel 14.

[0043] See also Figure 1 , Figure 4 and Figure 6, the electronic atomization device also includes a nozzle assembly 5, a vent pipe 2 and an atomizing core 6. The nozzle assembly 5 is fixed to the top of the oil cup 1; the two ends of the vent pipe 2 are respectively fixed to the nozzle assembly 5 and the oil cup 1, an air flow channel 21 is provided in the vent pipe 2, and the first air inlet channel 12, the second air inlet channel 13 and the third air inlet channel 14 are all located on one side of the vent pipe 2; the atomizing core 6 is fixed in the vent pipe 2, and the atomizing core 6 is provided with an atomizing chamber 211. Specifically, the top of the vent pipe 2 is sealedly connected to the nozzle assembly 5, the bottom end of the vent pipe 2 is sealedly connected to the oil cup 1, and the vent pipe 2, the oil cup 1 and the nozzle assembly 5 are jointly enclosed to form a liquid storage chamber 11; an exhaust channel 511 is provided in the nozzle assembly 5, the air flow channel 21 is connected to the exhaust channel 511, and the aerosol generated by heating and atomizing the atomizing core 6 is carried out by the gas through the exhaust channel 511. Since the first air intake passage 12 , the second air intake passage 13 and the third air intake passage 14 are all located on one side of the central axis cross section of the ventilation pipe 2 , it is possible to prevent condensate formed in the ventilation pipe 2 from falling into the second air intake passage 13 .

[0044] See also Figure 2 , Figure 3 and Figure 5 In some embodiments, the electronic atomization device further includes a housing 3, the oil cup 1 is fixed in the housing 3, and an air inlet groove 121 is provided on the outer side of the bottom end of the oil cup 1, and the air inlet groove 121 is a part of the first air inlet channel 12, that is, the first air inlet channel 12 is provided between the oil cup 1 and the housing 3, and the processing method of the air inlet groove 121 is relatively convenient, so that the molding of the first air inlet channel 12 is relatively simple; moreover, the air inlet groove 121, the second air inlet channel 13 and the third air inlet channel 14 are all provided on the oil cup 1, and when the oil cup 1 is assembled into the housing 3, an inverted U-shaped air inlet channel can be formed, which can simplify the assembly process. It should be noted that in other embodiments, the first air inlet channel 12 can be directly opened on the oil cup 1.

[0045] See also Figure 2 and Figure 4 The bottom end of the shell 3 is provided with an air inlet 321 for communicating with the outside atmosphere, and the air inlet 321 is connected to the first air inlet channel 12, so that the gas can enter the electronic atomization device from the bottom end of the shell 3 through the air inlet 321. The shell 3 includes a shell 31 and a bottom cover 32, the oil cup 1 is fixed in the shell 31, the bottom cover 32 is fixed to the bottom end of the shell 31, and the air inlet 321 is located at the bottom cover 32.

[0046] See also Figure 1 , Figure 2 and Figure 6 The electronic atomization device also includes a button assembly 4 arranged on the shell 3, and an air intake gap 44 is provided between the button assembly 4 and the shell 3. The air intake gap 44 is connected to the first air intake channel 12, so that gas can also enter the electronic atomization device from the air intake gap 44 between the button assembly 4 and the shell 3.

[0047] It should be noted that when suctioning, Figure 2 As shown, the external gas flows into the first air inlet channel 12 from the air inlet gap 44 and flows into the first air inlet channel 12 from the air inlet hole 321. The gas in the first air inlet channel 12 flows into the connecting channel 15 through the second air inlet channel 13, and then flows into the airflow channel 21 from the connecting channel 15. The gas flows out of the airflow channel 21 with aerosol.

[0048] See also Figure 1 , Figure 4 and Figure 6 The nozzle assembly 5 includes a nozzle 51, a sealing silicone 52 and an oil-absorbing cotton 53. The nozzle 51 is fixed to the top of the oil cup 1. The sealing silicone 52 is arranged between the vent pipe 2 and the oil cup 1. The vent pipe 2 is sealed and connected to the nozzle assembly 5 through the sealing silicone 52. The oil-absorbing cotton 53 is arranged between the sealing silicone 52 and the oil cup 1. The oil-absorbing cotton 53 is used to absorb condensed liquid to prevent the condensed liquid from falling. The atomizer core 6 includes a heating wire 61 and an oil-conducting cotton 62. The oil-conducting cotton 62 is fixed in the vent pipe 2. The heating wire 61 is fixed in the oil-conducting cotton 62. A liquid inlet hole is opened on the side wall of the vent pipe 2. The oil-conducting cotton 62 covers the liquid inlet hole. The oil-conducting cotton 62 absorbs the atomized liquid stored in the liquid storage chamber 11 through the liquid inlet hole. The heating wire 61 heats the atomized liquid held by the oil-conducting cotton 62 to atomize and generate an aerosol. The button assembly 4 includes a button 41, a button silicone 42 and a switch circuit board 43. The button silicone 42 is fixed on the shell 3. The button 41 is movably assembled on the shell 3 and contacts the button silicone 42. The button silicone 42 is used to enhance the feel of pressing the button 41. The switch circuit board 43 is electrically connected to the heating wire 61 and the button 41. When the button 41 is pressed, the switch circuit board 43 controls the heating wire 61 to start heating. When the button 41 is released, the switch circuit board 43 controls the heating wire 61 to stop heating, thereby realizing the control of starting and shutting down the electronic atomization device through the button assembly 4.

[0049] See also Figure 1 , Figure 4 and Figure 6 The electronic atomization device also includes a power supply 7, an electrode 8, an electrode silica gel 9, a light-conducting silica gel 10 and a control board 20, all of which are fixed in the housing 3. The control board 20 is electrically connected to the power supply 7, the electrode 8, the heating wire 61 and the switch circuit board 43. The control board 20 is fixed to the bottom cover 32, and the light-conducting silica gel 10 is fixed in the housing 31. The light-conducting silica gel 10 is used to transmit the light beam emitted by the indicator light on the control board 20 to the indicator light hole outside the housing 31; the power supply 7 is used to supply power to the heating wire 61; the electrode silica gel 9 is fixed in the installation cavity, and a connecting channel 15 is formed between the electrode silica gel 9 and the inner wall of the oil cup 1, and the electrode 8 is fixed to the electrode silica gel 9 and is electrically connected to the heating wire 61 and the control board 20 respectively.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electronic atomization device, characterized in that: The electronic atomization device is provided with a first air inlet channel, a second air inlet channel and a third air inlet channel which are connected in sequence, the first air inlet channel and the third air inlet channel are both located on the same side of the second air inlet channel, and the first air inlet channel, the second air inlet channel and the third air inlet channel are all located on one side of the axial cross-section of the central axis of the electronic atomization device; the electronic atomization device is also provided with an air flow channel which at least includes an atomization chamber, the third air inlet channel is connected to the bottom end of the air flow channel, and the second air inlet channel is at least higher than the bottom end of the air flow channel.

2. The electronic atomization device according to claim 1, characterized in that: The air flow channel further includes a buffer space located at the bottom end of the atomization chamber, and the buffer space is communicated with the third air inlet channel.

3. The electronic atomization device according to claim 2, characterized in that: A communication channel is further provided between the third air inlet channel and the buffer space, the communication channel being in communication with the third air inlet channel and the buffer space respectively.

4. The electronic atomization device according to any one of claims 1 to 3, characterized in that: A throttle port is provided between the third air intake passage and the second air intake passage, or the third air intake passage at least includes a throttle passage.

5. The electronic atomization device according to any one of claims 1 to 3, characterized in that: The angles between the first air intake channel and the second air intake channel, and between the second air intake channel and the third air intake channel range from 45° to 120°.

6. The electronic atomization device according to claim 5, characterized in that: The first air intake passage is parallel to the third air intake passage, or the first air intake passage is parallel to the third air intake passage and perpendicular to the second air intake passage.

7. The electronic atomization device according to claim 3, characterized in that: The length of the communication channel is greater than or equal to 1.5 mm, and the angle between the communication channel and the airflow channel is in the range of 45°-90°.

8. The electronic atomization device according to claim 3, characterized in that: The center axis distance between the second air inlet passage and the communication passage is greater than or equal to 1.2 mm.

9. The electronic atomization device according to claim 3, characterized in that: The electronic atomization device includes an oil cup, in which a liquid storage cavity and an installation cavity isolated from the liquid storage cavity are provided. The installation cavity is located at the bottom end of the oil cup and communicates with the buffer space, and the communication channel is a part of the installation cavity.

10. The electronic atomization device according to claim 9, characterized in that: The electronic atomization device also includes: A suction nozzle assembly is arranged at the top of the oil cup; A ventilation pipe, both ends of which are respectively fixed to the suction nozzle assembly and the oil cup, the ventilation pipe is provided with the air flow channel, the first air inlet channel, the second air inlet channel and the third air inlet channel are all located on one side of the central axis cross section of the ventilation pipe; and, An atomizing core is fixed in the ventilation pipe, and the atomizing core is provided with the atomizing cavity.

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