Electronic atomization equipment

Abstract

The invention discloses an electronic atomization device which comprises an air channel structure, a first atomization structure and a second atomization structure. The noise reduction structure comprises a structure body, one end of the structure body is connected with the air channel structure, the structure body is of a hollow structure and is provided with a first flow channel, the first flow channel is communicated with the air flow channel and the first cavity, the structure body is further provided with at least one second flow channel, and the second flow channel is communicated with the first cavity. One end of the second flow channel is located on the inner wall of the structure body and communicates with the first flow channel, and the other end of the second flow channel is located on the outer wall of the structure body and communicates with the first cavity. In the embodiment of the invention, the aerodynamic load fluctuation of the inner wall surface of the airflow channel and the inner wall surface of the first flow channel can be reduced, so that the aerodynamic noise is reduced. Therefore, the airflow noise of the electronic atomization equipment can be reduced.

Description

Technical Field

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

[0002] In related technologies, the areas with relatively large airflow noise in electronic atomization devices are often in gaps with a relatively small cross-sectional area of the air passage (such as the gap of the TYPE-C female socket, the gap between the battery and the housing of the electronic atomization device) or in flow holes (such as the intake passage, the throttling passage - the suction resistance or flow control passage of the electronic atomization device). Among them, the throttling passage and its surrounding area are probably the areas with the largest airflow noise distribution in the entire air passage of the electronic atomization device. Further analysis shows that the cross-sectional area of the throttling passage is small, and the flow velocity in the throttling passage increases greatly during the suction experience. The turbulence, vortex intensity, pulsation intensity and frequency of the airflow near the related air passage also increase accordingly, thereby generating an airflow noise wave that can be perceived by the human body, and ultimately resulting in a decrease in the comfort and pleasure of the user's suction experience. Summary of the Invention

[0003] This application aims to at least solve one of the technical problems existing in the prior art. For this purpose, this application provides an electronic atomization device, which can reduce the airflow noise of the electronic atomization device to optimize the usage experience.

[0004] The electronic atomization device according to the embodiment of this application includes:

[0005] An airway structure having an airflow passage and a first cavity;

[0006] A noise reduction structure including a structure body. One end of the structure body is connected to the airway structure. The structure body is a hollow structure and forms a first flow channel. The first flow channel communicates the airflow channel and the first cavity. The structure body is further provided with at least one second flow channel. One end of the second flow channel is located on the inner wall of the structure body and communicates with the first flow channel, and the other end of the second flow channel is located on the outer wall of the structure body and communicates with the first cavity.

[0007] Further, the number of the second flow channels is one, and the cross-sectional profile of the second flow channel is one of a circle, an ellipse or a polygon; or, the number of the second flow channels is two or more, the cross-sectional profile of the second flow channel is one of a circle, an ellipse or a polygon, and the cross-sectional profiles of any two of the second flow channels are the same or different.

[0008] Further, one end of the second flow channel is smoothly transitioned with the outer wall surface of the structure body.

[0009] Further, a connecting portion is formed at the intersection of the other end of the second flow channel and the inner wall of the structural body, and a side of the connecting portion away from the air outlet end of the air duct structure is a smooth curved surface.

[0010] Further, the noise reduction structure further includes a protrusion, one end of the protrusion is connected to the other end of the structural body, and the other end of the protrusion is a free end and extends along a direction away from the air outlet end of the air flow channel.

[0011] Further, the number of the protrusions is multiple, and the multiple protrusions are arranged at intervals along the circumferential direction of the first flow channel, so that one end of the noise reduction structure away from the air outlet end of the air duct structure presents a structure with undulations.

[0012] Further, the protrusion is a tooth-shaped structure, and the tooth-shaped structure includes a tooth root, a tooth top and a tooth profile surface, and the tooth profile surface is located between the tooth root and the tooth top.

[0013] Further, there is a gap between the side of the tooth profile surface of the tooth-shaped structure close to the inner wall surface of the structural body and the tooth profile surface of another adjacent tooth-shaped structure; or, the side of the tooth profile surface of the tooth-shaped structure close to the inner wall surface of the structural body intersects with the tooth profile surface of another adjacent tooth-shaped structure.

[0014] Further, along the air flow direction in the air flow channel, the cross-sectional area of the tooth-shaped structure gradually decreases; along the direction away from the axis of the first flow channel, the tooth width of the tooth-shaped structure remains unchanged or gradually decreases.

[0015] Further, an intersection line is formed between the inner wall surface of the tooth-shaped structure and the tooth profile surface; and / or, an intersection line is formed between the inner wall surface of the tooth-shaped structure and the tooth top; and / or, an intersection line is formed between the inner wall surface of the tooth-shaped structure and the tooth root.

[0016] Further, the outer wall surface of the tooth-shaped structure is smoothly transitioned with the tooth profile surface; and / or, the outer wall surface of the tooth-shaped structure is smoothly transitioned with the tooth top; and / or the outer wall surface of the tooth-shaped structure is smoothly transitioned with the tooth root.

[0017] Further, any two of the tooth-shaped structures are the same or different.

[0018] Further, the tooth-shaped structure is one of a straight tooth, an inclined tooth, a spiral tooth, and a bevel tooth.

[0019] Further, the cross-section of the tooth-shaped structure along the circumferential direction of the first flow channel is one of a sawtooth shape, a petal shape, or a mathematical function waveform diagram.

[0020] Further, the noise reduction structure is integrally formed with the air duct structure; alternatively, the noise reduction structure is embedded in the air duct structure; alternatively, the noise reduction structure is sleeved on the outer periphery of the air duct structure; alternatively, one end face of the noise reduction structure is fixedly connected to the end face of the air duct structure.

[0021] The electronic atomization device according to the embodiment of the present application has at least the following beneficial effects: In the embodiment of the present application, the noise reduction structure is connected to the air duct structure. The structural body of the noise reduction structure has a first flow channel and at least one second flow channel. The first flow channel communicates with the first cavity and the air flow channel, and the second flow channel communicates with the inner wall and the outer wall of the structural body, that is, the second flow channel communicates with the first cavity and the first flow channel. Due to the pressure difference between the inner wall and the outer wall of the structural body, this pressure difference will drive sufficient air flow to flow from the outer wall of the structural body through the second flow channel to the inner wall of the structural body, and a micro jet flow will be formed on the inner wall. The micro jet flow will destroy the vortex structure or boundary layer generated by the detachment from the inner wall surface of the first flow channel, and can reduce the aerodynamic load fluctuation on the inner wall surface of the air flow channel and the inner wall surface of the first flow channel, thereby reducing the aerodynamic noise. Thus, it is beneficial to the air flow noise of the noise reduction electronic atomization device.

[0022] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0023] The following further describes the present application with reference to the drawings and embodiments, where:

[0024] Figure 1 is a schematic structural diagram of an electronic atomization device according to an embodiment of the present application, where the noise reduction structure is omitted in the electronic atomization device in the figure;

[0025] Figure 2 is Figure 1 the cross-sectional structural diagram of A-A in

[0026] Figure 3 is Figure 2 the partial enlarged schematic diagram of part B in

[0027] Figure 4a is the assembly schematic diagram of the air duct structure and the noise reduction structure in an electronic atomization device according to an embodiment of the present application;

[0028] Figure 4b is Figure 4a the cross-sectional structural diagram of C-C in

[0029] Figure 4c is Figure 4b the partial enlarged schematic diagram of part D in

[0030] Figure 5a Assembly schematic diagram of the airway structure and noise reduction structure in an electronic atomization device according to another embodiment of the present application;

[0031] Figure 5b For Figure 5a Schematic cross-sectional structure diagram of E-E in;

[0032] Figure 5c For Figure 5b Partial enlarged schematic diagram of part F in;

[0033] Figure 6a Assembly schematic diagram of the airway structure and noise reduction structure in an electronic atomization device according to another embodiment of the present application;

[0034] Figure 6b For Figure 6a Schematic cross-sectional structure diagram of G-G in;

[0035] Figure 6c For Figure 6b Partial enlarged schematic diagram of part H in;

[0036] Figure 7a Assembly schematic diagram of the airway structure and noise reduction structure in an electronic atomization device according to another embodiment of the present application;

[0037] Figure 7b For Figure 7a Schematic cross-sectional structure diagram of J-J in;

[0038] Figure 7c For Figure 7b Partial enlarged schematic diagram of part K in;

[0039] Figure 8a Assembly schematic diagram of the airway structure and noise reduction structure in an electronic atomization device according to another embodiment of the present application;

[0040] Figure 8b For Figure 8a Schematic cross-sectional structure diagram of M-M in;

[0041] Figure 8c For Figure 8b Partial enlarged schematic diagram of part N in;

[0042] Figure 9a Assembly schematic diagram of the airway structure and noise reduction structure from another perspective in an electronic atomization device according to an embodiment of the present application;

[0043] Figure 9b For Figure 9a Partial enlarged schematic diagram of part L in;

[0044] Figure 10 Schematic structure diagram of the noise reduction structure in an electronic atomization device according to an embodiment of the present application;

[0045] Figure 11 It is a schematic structural diagram of a noise reduction structure in an electronic atomization device according to another embodiment of the present application.

[0046] Reference numerals:

[0047] 110, housing; 120, mouthpiece; 130, bottom cover; 131, air inlet hole; 140, power supply assembly;

[0048] 200, airway structure; 210, air flow channel; 220, air outlet end; 230, first cavity;

[0049] 310, atomization core; 320, atomization channel;

[0050] 400, noise reduction structure; 410, first flow channel; 420, structural body; 421, second flow channel; 430, protrusion; 431, tooth crest; 432, tooth root; 433, tooth profile surface. Detailed implementation manners

[0051] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0052] In the description of the present application, it should be understood that the orientation descriptions such as up, down, front, back, left, right, etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. 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.

[0053] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence of the indicated technical features.

[0054] In the description of the present application, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present application in combination with the specific content of the technical solution.

[0055] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0056] See also Figures 1 to 3 The electronic atomization device includes a shell 110, a liquid storage tank, a power supply component 140, an atomization core 310 and a suction nozzle 120. The liquid storage tank is arranged in the shell 110, and the suction nozzle 120 is arranged at one end of the shell 110. The liquid storage tank stores atomized liquid. The power supply component 140 is used to provide power to the atomization core 310. The atomization core 310 generates an aerosol by conducting the atomized liquid in the liquid storage tank and heating it to atomize. Among them, the electronic atomization device has an atomization channel 320, and the atomization channel 320 is used to pass the aerosol generated by the atomization core 310 to the suction nozzle 120 for the user to inhale.

[0057] In this embodiment, the electronic atomization device also includes a bottom cover 130, which is arranged at one end of the shell 110 away from the nozzle 120. The bottom cover 130 is provided with an air inlet hole 131. External air can enter the electronic atomization device through the air inlet hole 131 and then flow through the atomization core 310, and together with the aerosol generated by the atomization core 310, it flows to the nozzle 120 through the atomization channel 320 for the user to inhale.

[0058] An electronic atomization device disclosed in the embodiment of the present application, see Figure 4a , Figure 4b and Figure 4c The electronic atomization device also includes an airway structure 200 and a noise reduction structure 400. The airway structure 200 can serve as a carrier for airflow transport within the electronic atomization device, and the noise reduction structure 400 is used to reduce the airflow noise in the airway structure 200.

[0059] Specifically, the airway structure 200 has an airflow channel 210 and a first cavity 230, and the cross-sectional area of ​​the first cavity 230 is larger than the cross-sectional area of ​​the airflow channel 210. The airway structure 200 may be a component or structure used to realize other functions in the electronic atomization device, or may be a structure used alone to realize airflow control, which is not limited here.

[0060] In practical applications, the airway structure 200 can be used as an air intake structure, a throttling structure or other structures that require noise reduction. Correspondingly, the airflow channel 210 can be an air intake channel, a throttling channel or other channels for conveying airflow and requiring airflow control.

[0061] Exemplarily, refer to Figure 2 and Figure 3 , the airway structure 200 is disposed between the atomization core 310 and the bottom cover 130. After the external air enters the electronic atomization device from the air inlet hole 131 of the bottom cover 130, it successively passes through the air flow channel 210 of the airway structure 200 and the flow channel 410 of the noise reduction structure 400, and then reaches the atomization core 310, and carries the aerosol generated by the atomization core 310 to flow through the atomization channel 320 to the mouthpiece 120 for the user to inhale.

[0062] In this embodiment, the first cavity 230 is communicated with the atomization channel 320, and the air flow entering the first cavity 230 can then flow to the atomization channel 320.

[0063] As Figure 4b and Figure 4c shown, the noise reduction structure 400 includes a structure body 420. One end of the structure body 420 is connected to the air outlet end 220 of the airway structure 200. The structure body 420 is a hollow structure and is formed with a first flow channel 410. The first flow channel 410 communicates the air flow channel 210 and the first cavity 230. At least one second flow channel 421 is further disposed on the wall surface of the structure body 420. One end of the second flow channel 421 is located on the inner wall of the structure body 420 and communicates with the first flow channel 410, and the other end of the second flow channel 421 is located on the outer wall of the structure body 420 and communicates with the first cavity 230. Wherein, at least a part of the structure body 420 is located in the first cavity 230, so that at least a part of the outer wall of the structure body 420 is located in the first cavity 230. Thus, the second flow channel 421 can communicate with the first cavity 230.

[0064] It should be understood that the structure body 420 is a hollow structure, that is, the structure body 420 includes an inner wall and an outer wall. One end of the second flow channel 421 is disposed on the inner wall of the structure body 420, and the other end is disposed on the outer wall of the structure body 420. That is, the second flow channel 421 communicates the first cavity 230 and the first flow channel 410.

[0065] In the embodiment of the present application, the noise reduction structure 400 is connected to the airway structure 200. The structure body 420 of the noise reduction structure 400 has a first flow channel 410 and at least one second flow channel 421. The first flow channel 410 communicates the first cavity 230 and the air flow channel 210, and the second flow channel 421 communicates the inner wall and the outer wall of the structure body 420, that is, the second flow channel 421 communicates the first cavity 230 and the first flow channel 410.

[0066] When the electronic atomization device is working, after the external atmosphere enters the electronic atomization device, it flows through the airflow channel 210 and the first flow channel 410 of the airway structure 200, and then enters the first cavity 230. Due to the pressure difference between the inner wall and the outer wall of the structural body 420, this pressure difference will drive sufficient airflow from the outer wall of the structural body 420 through the second flow channel 421 to the inner wall of the structural body 420, and form microjets on the inner wall. The microjets will destroy the vortex structure or boundary layer generated by the separation of the inner wall surface of the structural body 420 in the first flow channel 410, which can reduce the aerodynamic load fluctuations on the inner wall surface of the airflow channel 210 and the inner wall surface of the first flow channel 410, thereby reducing the aerodynamic noise. In this way, it is helpful to reduce the airflow noise of the electronic atomization device.

[0067] It is worth to understand that the number of the second flow channel 421 can be one or more than one.

[0068] In some embodiments of the present application, the number of the second flow channel 421 is one, and the cross-sectional profile of the second flow channel 421 is one of a circle, an ellipse or a polygon. Specifically, the polygon includes but is not limited to a triangle, a quadrilateral, a pentagon, a hexagon, and the like.

[0069] In some embodiments of the present application, the number of second flow channels 421 is two or more, the cross-sectional profiles of any two second flow channels 421 are the same or different, and the cross-sectional profile of the second flow channels 421 is one or a combination of circular, elliptical, polygonal, or more.

[0070] As one example, the number of the second flow channels 421 is two or more, wherein the cross-sectional profile of each second flow channel 421 is the same. Further, the cross-sectional profile of the second flow channel 421 is one of a circle and a polygon. Exemplarily, the cross-sectional profile of the second flow channel 421 is a rectangle, the long side of the rectangle is arranged along the circumference of the first flow channel 410, and the short side is arranged along the X direction, see Figure 7a , Figure 7b , Figure 7c , Figure 8a , Figure 8b , Figure 8c , Figure 9a and Figure 9b .

[0071] As another example, the number of the second flow channels 421 is two or more, wherein the cross-sectional profile of each second flow channel 421 is different. Further, the cross-sectional profile of each second flow channel 421 is circular or polygonal.

[0072] As another example, the number of the second flow channels 421 is two or more, wherein some of the second flow channels 421 have the same cross-sectional profile, and another part of the second flow channels 421 have a cross-sectional profile different from the aforementioned second flow channels 421 .

[0073] It should be noted that the cross-sectional profile of the second flow channel 421 may also be a plane figure formed by a combination of any two or more of straight line segments, arcs or curves.

[0074] In some embodiments of the present application, one end of the second flow channel 421 smoothly transitions to the outer wall of the air channel structure 200. In this way, the Coanda effect can be used to allow the airflow on the outer wall of the structure body 420 to be more smoothly introduced into the second flow channel 421, which helps to form microjets and improve the noise reduction effect.

[0075] Exemplarily, the connection between the second flow channel 421 and the outer wall of the structural body 420 is rounded.

[0076] In some embodiments of the present application, see Figure 4c A connection portion is formed at the intersection of one end of the second flow channel 421 and the inner wall surface of the air channel structure 200, and the side of the connection portion away from the air outlet end 220 of the air channel structure 200 is a smooth curved surface. The X direction in the figure is the airflow direction in the airflow channel 210. When the electronic atomization device is working, the airflow flows from the airflow channel 210 to the first flow channel 410 of the noise reduction structure 400, and the airflow flows through the second flow channel 421 during the flow in the first flow channel 410.

[0077] It is worth understanding that the airflow in the first flow channel 410 will pass through the intersection of the second flow channel 421 and the first flow channel 410 during the flow process, but will not flow from the second flow channel 421 to the outer wall of the first flow channel 410 .

[0078] In the aforementioned embodiment, microjets are formed in the second flow channel 421, flowing from the outer wall of the structural body 420 to the first flow channel 410, and the side of the connecting portion away from the air outlet end 220 of the airway structure 200 is a smooth curved surface. Therefore, when the microjets merged from the second flow channel 421 enter the first flow channel 410, the smooth curved surface can produce a Coanda effect on the airflow, allowing the airflow in the second flow channel 421 to be more smoothly guided to the first flow channel 410, which helps to use the microjets to destroy the vortex structure generated by the inner wall of the airflow channel 210 and / or the inner wall of the first flow channel 410, thereby improving the noise reduction effect.

[0079] In some embodiments of the present application, see Figure 4a , Figure 4b , Figure 4c , Figure 5a , Figure 5b and Figure 5c, the noise reduction structure 400 further includes a protrusion 430. One end of the protrusion 430 is connected to the other end of the structure body 420, and the other end of the protrusion 430 is a free end and extends in a direction away from the air outlet end 220 of the air flow channel 210. On the one hand, the microjet formed by the second flow channel 421 destroys the vortex structure generated by detaching from the inner wall of the air flow channel 210 and / or the inner wall of the first flow channel 410. On the other hand, after the air flow in the air flow channel 210 flows into the noise reduction structure 400, the air flow flows from the air flow channel 210 to the first flow channel 410 of the noise reduction structure 400. The air flow first passes through the root of the protrusion 430, and an upward jet is generated at the root position of the protrusion 430. This jet can destroy the vortex shed from the suction surface and strengthen the mixing between the wake and the mainstream air flow in the air flow channel 210. In this way, the pulsation intensity of the turbulence in the mainstream air flow can be weakened, thereby suppressing the generation of peak noise and reducing the air flow noise of the electronic atomization device. The microjets in the two directions of the vertical inner wall surface and the parallel inner wall surface cooperate with each other, which can further improve the noise reduction effect.

[0080] In the above embodiments, the second flow channel 521 can be arranged on the protrusion 430, can also be arranged in the structure body 420, or can be partially arranged on the protrusion 430 and the other part arranged in the structure body 420.

[0081] It should be noted that Figure 4c and Figure 5c the X direction in the figure is the direction away from the air outlet end 220 of the air flow channel 210; or, the X direction in the figure is the air flow direction.

[0082] Wherein, the number of the protrusions 430 is one or more. The protrusions 430 are arranged at intervals along the circumferential direction of the first flow channel 410, and the end faces of the ends of the protrusions 430 away from the structure body 420 present a structure with undulations in the air flow direction.

[0083] It should be noted that the noise reduction structure 400 can be integrally formed by the structure body 420 and the protrusion 430, or can be assembled or spliced by an independent structure body 420 and protrusion 430, which is not limited herein.

[0084] In some embodiments of the present application, the number of the protrusions 430 is multiple. The multiple protrusions 430 are arranged at intervals along the circumferential direction of the first flow channel 410, so that one end of the noise reduction structure 400 away from the air outlet end 220 of the airway structure 200 presents a structure with undulations. In this way, more and uniform jets can be formed in the first flow channel 410, which is beneficial to improving the destruction effect of the jets on the vortices, and thus is beneficial to improving the noise reduction effect.

[0085] In a traditional atomizer, when airflows eject from its trailing edge through the airflow channel 210, due to the separation of the laminar boundary layer at the trailing edge, the airflows will detach from the wall surface of the airflow channel 210, generating a continuously shedding von Kármán vortex street. Its shedding frequency is consistent with the peak noise frequency of the airflows. Therefore, the shedding of the boundary layer von Kármán vortex street is one of the main reasons for airflow noise. In this embodiment, a noise reduction structure 400 is provided at the air outlet end 220 of the airflow channel 210, and the vortex shedding at the trailing edge of the airflow channel 210 is effectively suppressed. Specifically, an upward jet is generated at the root position of the protrusion 430, which destroys the vortex structure shed from the suction surface, strengthens the mixing between the wake and the mainstream, weakens the turbulent pulsation intensity, and thus suppresses the generation of peak noise, achieving the purpose of reducing airflow noise and flow loss.

[0086] In the embodiment of the present application, along the airflow direction, i.e., the X direction, the second flow channel 421 is located between the protrusion 430 and the air outlet end 220 of the airway structure 200.

[0087] For the case where there are multiple second flow channels 421, each second flow channel 421 can be arranged at intervals around the axis of the first flow channel 410 at the same position in the X direction, or can be arranged in a staggered manner in the X direction, or can be disorderly distributed.

[0088] In some embodiments of the present application, the protrusion 430 is a toothed structure, and the toothed structure includes a tooth root 432, a tooth top 431, and a tooth profile surface 433. The tooth profile surface 433 is located between the tooth root 432 and the tooth top 431.

[0089] Specifically, the tooth root 432 is closer to the air outlet end 220 of the airway structure 200 than the tooth top 431. When the airflow enters the noise reduction structure 400 from the airflow channel 210, the airflow passes through the tooth root 432, the tooth profile surface 433, and the tooth top 431 in sequence. During the process of the airflow passing through the tooth root 432, due to the pressure difference between the inner wall and the outer wall at the tooth root 432, a jet can be formed at the tooth root 432 in the direction away from the air outlet end 220. This jet can destroy the vortices shed from the suction surface and strengthen the doping and mixing between the wake and the main airflow in the airflow channel 210. In this way, it helps to weaken the pulsation intensity of the turbulence in the mainstream airflow, thereby suppressing the generation of peak noise.

[0090] It should be noted that the tooth root 432 can be a line segment or a connecting part connecting the roots of two adjacent protrusions 430; similarly, the tooth top 431 can be the intersection line of the two tooth profile surfaces 433 of the same protrusion 430 or a connecting part connecting the tooth profile surfaces 433 on both sides of the same protrusion 430.

[0091] In some embodiments of the present application, the protrusion 430 is formed at one end of the structural body 420 away from the airway structure 200, that is, the protrusion 430 is part of the structural body 420; the second flow channel 421 is arranged on the tooth-shaped structure, and along the airflow direction in the airflow channel 210, the projection of the second flow channel 421 is located on the symmetry axis of the tooth tip 431. Thus, the microjet perpendicular to the inner wall surface formed by the second flow channel 421 and the microjet parallel to the inner wall surface generated by the tooth-shaped structure cooperate with each other, which can further improve the noise reduction effect.

[0092] In some embodiments of the present application, the second flow channel 421 is arranged on the structural body 420, and along the airflow direction in the airflow channel 210, the projection of the second flow channel 421 is located on the tooth root 432. Thus, the microjet perpendicular to the inner wall surface formed by the second flow channel 421 and the microjet parallel to the inner wall surface generated by the tooth-shaped structure cooperate with each other, which can further improve the noise reduction effect.

[0093] In some embodiments of the present application, the second flow channel 421 is arranged on both the tooth-shaped structure and the structural body 420. Among them, along the airflow direction in the airflow channel 210, the projection of the second flow channel 421 arranged on the tooth-shaped structure is located on the symmetry axis of the tooth tip 431, and the projection of the second flow channel 421 arranged on the structural body 420 is located on the tooth root 432. Thus, the microjets perpendicular to the inner wall surface formed by the second flow channels 421 at different positions and the microjets parallel to the inner wall surface generated by the tooth-shaped structure cooperate with each other, which can further improve the noise reduction effect.

[0094] In some embodiments of the present application, there is a gap between the side of the tooth profile surface 433 of the tooth-shaped structure close to the inner wall surface of the structural body 420 and the tooth profile surface 433 of another adjacent tooth-shaped structure. Specifically, the interval between two adjacent tooth-shaped structures is greater than the maximum width of the tooth width, and the two tooth profile surfaces 433 of two adjacent tooth-shaped structures close to each other are connected by a connecting portion. Thus, the area or space of the tooth root 432 can be larger, so that the intersection boundary line trajectory between the tooth root 432 and the inner wall of the airflow channel 210 or the inner wall of the structural body 420 is longer. Further, the connection between the tooth root 432 and the wall surface of the airflow channel 210 and / or the first flow channel 410 maintains a sharp feature instead of a smooth transition, which is beneficial to improving the jet effect at the tooth root 432, thereby improving the noise reduction effect.

[0095] It should be understood that the tooth width refers to the length of the protrusion 430 in the circumferential direction of the flow channel.

[0096] Among them, the connecting portion can be a plane, a curved surface, or a surface composed of a combination of a plane and a curved surface, which is not limited herein.

[0097] Exemplarily, refer to Figure 8b and Figure 9b, the two tooth profile surfaces 433 that are close to each other in two adjacent tooth-like structures are connected by an arc surface or a curved surface.

[0098] In some embodiments of the present application, one side of the tooth profile surface 433 of the tooth-like structure close to the inner wall surface of the structure body 420 intersects with the tooth profile surface 433 of another adjacent tooth-like structure. That is to say, the tooth profile surfaces 433 of two adjacent tooth-like structures intersect, and the intersection line formed by the two tooth profile surfaces 433 is the tooth root 432.

[0099] In some embodiments of the present application, refer to Figure 4c and Figure 5c , along the air flow direction in the air flow channel 210, the cross-sectional area of the tooth-like structure gradually decreases; along the direction away from the axis of the first flow channel 410, the tooth width of the tooth-like structure remains unchanged or gradually decreases.

[0100] In the figure, the X direction is the air flow direction in the air flow channel 210; the cross-section of the tooth-like structure refers to the cross-section formed by the protrusion 430 and the plane perpendicular to the X direction. Along the X direction, the area where the air flow communicates with the outside gradually increases rather than changes sharply, which helps to reduce the pulsation intensity and frequency of the air flow pressure, is beneficial to reducing the air flow noise wave that can be perceived by the human body, and thus improves the comfort of the suction experience.

[0101] As one example, along the direction away from the axis of the first flow channel 410, the tooth width of the tooth-like structure remains unchanged. That is to say, the tooth width of the tooth-like structure close to the inner wall of the first flow channel 410 is equal to the tooth width of the tooth-like structure close to the outer wall.

[0102] As another example, along the direction away from the axis of the first flow channel 410, the tooth width of the tooth-like structure gradually decreases. That is to say, the tooth width of the side close to the inner wall of the first flow channel 410 is greater than the tooth width of the side away from the inner wall of the first flow channel 410.

[0103] In some embodiments of the present application, the inner wall surface of the tooth-like structure forms an intersection line with at least one of the tooth top 431, the tooth root 432, and the tooth profile surface 433. In this way, the position where the intersection line is formed does not guide the air flow passing through, which is beneficial to the smooth separation of the air flow close to the inner wall surface in the air flow channel 210 and the first flow channel 410.

[0104] As some of the embodiments, the inner wall surface of the tooth-like structure forms an intersection line with the tooth profile surface 433. In other words, there is a sharp feature between the inner wall surface of the tooth-like structure and the tooth profile surface 433, rather than a smooth transition. In this way, the tooth profile surface 433 of the tooth-like structure does not guide the air flow passing through, which is beneficial to the smooth sequential separation of the air flow close to the inner wall surface in the air flow channel 210 and the first flow channel 410.

[0105] In some of these embodiments, an intersection curve is formed between the inner wall surface of the toothed structure and the tooth tip 431. In other words, a sharp feature is maintained between the inner wall surface of the toothed structure and the tooth tip 431, rather than a smooth transition. In this way, the tooth tip 431 of the toothed structure does not direct the flowing air, which is conducive to the smooth separation of the air flow near the inner wall surface in the air flow channel 210 and the first flow channel 410.

[0106] In some of these embodiments, an intersection curve is formed between the inner wall surface of the toothed structure and the tooth root 432. In other words, a sharp feature is maintained between the inner wall surface of the toothed structure and the tooth root 432, rather than a smooth transition. In this way, the tooth root 432 of the toothed structure does not direct the flowing air, which is conducive to the smooth separation of the air flow near the inner wall surface in the air flow channel 210 and the first flow channel 410.

[0107] In this embodiment, as shown in Figure 11 an intersection curve is formed between the inner wall surface of the toothed structure and the tooth root 432, the tooth profile surface 433 and the tooth tip 431. That is to say, sharp features are maintained at the intersections of the inner wall surface of the toothed structure with the tooth profile surface 433, the tooth tip 431, and the tooth root 432. In this way, the toothed structure does not direct the flowing air, which is conducive to the smooth sequential separation of the air flow near the wall surface in the first flow channel 410.

[0108] In some embodiments of the present application, the outer wall surface of the toothed structure is smoothly transitioned with at least one of the tooth tip 431, the tooth root 432, and the tooth profile surface 433. In this way, the smooth connection can direct the air flow, making the surrounding gas flow more smoothly towards the suction surface, which helps to form a jet flow, thereby weakening the turbulent pulsation intensity of the mainstream and further suppressing the generation of peak noise.

[0109] In some embodiments of the present application, the outer wall surface of the toothed structure is smoothly transitioned with the tooth profile surface 433.

[0110] In some embodiments of the present application, the outer wall surface of the toothed structure is smoothly transitioned with the tooth tip 431.

[0111] In some embodiments of the present application, the outer wall surface of the toothed structure is smoothly transitioned with the tooth root 432.

[0112] In this embodiment, the intersections of the outer wall surface of the toothed structure with the tooth profile surface 433, the tooth tip 431, and the tooth root 432 are smoothly connected. In this way, the smooth connection can direct the air flow, making the surrounding gas flow more smoothly towards the suction surface, which helps to form a jet flow, thereby weakening the turbulent pulsation intensity of the mainstream and further suppressing the generation of peak noise.

[0113] It should be noted that the suction surface refers to the surface of an object where the curvature of the surface causes a negative pressure to be generated on the surface by the fluid. In the present application, the inner wall surface of the first flow channel 410 is the suction surface.

[0114] In some embodiments of the present application, any two dentate structures are the same or different. Exemplarily, in some embodiments, the noise reduction structure 400 has a plurality of protrusions 430 and the structures of each protrusion 430 are the same; in other embodiments, the noise reduction structure 400 has a plurality of protrusions 430, but the structures of each protrusion 430 are different from each other; in still other embodiments, the noise reduction structure 400 has a plurality of protrusions 430, the structures of some protrusions 430 are the same, and the structures of some other protrusions 430 are different from the former.

[0115] In some embodiments of the present application, the dentate structure is one of a straight tooth, an inclined tooth, a helical tooth, and a bevel tooth.

[0116] It should be noted that for the case where the noise reduction structure 400 has a plurality of protrusions 430, the dentate structure in the noise reduction structure 400 can be one of a straight tooth, an inclined tooth, a helical tooth, or a bevel tooth, or a combination of more than one, that is, the dentate structure in the noise reduction structure 400 includes two or more shapes of a straight tooth, an inclined tooth, a helical tooth, or a bevel tooth.

[0117] In some embodiments of the present application, the cross-section of the dentate structure along the circumferential direction of the first flow channel 410 is one of a serrated shape, a petal shape, or a mathematical function waveform diagram.

[0118] As one example, the cross-section of the dentate structure along the circumferential direction of the first flow channel 410 is serrated. Further, the boundary line of one side of the dentate structure can be parallel to the air flow direction in the air flow channel 210. Further, an intersection line is formed between the boundary line and the inner wall of the structure body 420, that is, the boundary line and the inner wall of the structure body 420 maintain sharp features rather than smooth transitions.

[0119] As another example, the cross-section of the dentate structure along the circumferential direction is petal-shaped, as shown in Figure 10 and Figure 11 shown.

[0120] As still another example, the contour track of the cross-section of the dentate structure along the circumferential direction presents a mathematical function waveform, and the mathematical function includes but is not limited to a sine function, a cosine function, etc.

[0121] In some embodiments of the present application, referring to Figure 5a , Figure 5b and Figure 5c , the noise reduction structure 400 and the airway structure 200 are integrally formed. Among them, the noise reduction structure 400 includes a structure body 420, the structure body 420 has a first flow channel 410, the axis of the first flow channel 410 is coaxial with the axis center of the air flow channel 210, and the first flow channel 410 is smoothly connected to the air flow channel 210.

[0122] In some embodiments of the present application, refer to Figure 4a , Figure 4b and Figure 4c , the noise reduction structure 400 is embedded in the airway structure 200. Specifically, the protrusion 430 protrudes from the end face of the airway structure 200 along the air flow direction; an installation groove is provided at the part where the airway structure 200 is docked with the noise reduction structure 400, and the inner diameter of the installation groove is larger than the inner diameter of the air flow channel 210, that is, the inner wall of the installation groove and the inner wall of the first flow channel 410 are stepped; the structural body 420 of the noise reduction structure 400 is installed on the installation groove, and the inner wall of the structural body 420 and the inner wall of the airway structure 200 are smoothly transitioned.

[0123] In some embodiments of the present application, refer to Figure 6a , Figure 6b and Figure 6c , the noise reduction structure 400 is sleeved on the outer periphery of the airway structure 200. Specifically, a connection structure for cooperating with the structural body 420 of the noise reduction structure 400 is provided at the part where the airway structure 200 is connected to the noise reduction structure 400, and the inner wall of the structural body 420 is flush with the inner wall of the airway structure 200, so that the first flow channel 410 of the structural body 420 and the air flow channel 210 of the airway structure 200 are smoothly transitioned.

[0124] In some embodiments of the present application, one end face of the noise reduction structure 400 is fixedly connected to the end face of the airway structure 200. At this time, one end of the structural body 420 close to the airway structure 200 is fixedly connected to the end face of the air outlet end 220 of the airway structure 200.

[0125] It should be noted that in the foregoing embodiments, the first flow channel 410 and the air flow channel 210 are smoothly transitioned, which is beneficial to reducing the pulsation when the air flow flows from the air flow channel 210 to the first flow channel 410, and helps to suppress the generation of noise.

[0126] In some embodiments of the present application, the air flow channel 210 of the airway structure 200 may have multiple segments, and the cross-sectional area of each segment of the air flow channel 210 may be the same or different. The noise reduction structure 400 is arranged at the place where the cross-sectional area of the air flow channel 210 is the smallest to improve the noise reduction effect.

[0127] It should be understood that the air flow channel 210 may specifically be an intake channel, a throttle channel or other channels that need to control the flow rate.

[0128] The embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present application. In addition, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

Claims

1. An electronic atomization device, characterized in that, Comprising: An airway structure having an air flow passage and a first cavity; A noise reduction structure including a structure body, one end of the structure body is connected to the airway structure, the structure body is a hollow structure and forms a first flow passage, the first flow passage communicates the air flow passage and the first cavity, and at least one second flow passage is further provided on the structure body, one end of the second flow passage is located on the inner wall of the structure body and communicates with the first flow passage, and the other end of the second flow passage is located on the outer wall of the structure body and communicates with the first cavity.

2. The electronic atomization device according to claim 1, wherein The number of the second flow passages is one, and the cross-sectional profile of the second flow passage is one of a circle, an ellipse or a polygon; or, the number of the second flow passages is two or more, the cross-sectional profile of the second flow passage is one of a circle, an ellipse or a polygon, and the cross-sectional profiles of any two of the second flow passages are the same or different.

3. The electronic atomization device according to claim 1 or 2, characterized in that, One end of the second flow passage is smoothly transitioned with the outer wall surface of the structure body.

4. The electronic atomization device according to claim 3, characterized in that, A connecting portion is formed at the intersection of the other end of the second flow passage and the inner wall of the structure body, and one side of the connecting portion away from the air outlet end of the airway structure is a smooth curved surface.

5. The electronic atomization device according to claim 1, characterized in that, The noise reduction structure further includes a protrusion, one end of the protrusion is connected to the other end of the structure body, and the other end of the protrusion is a free end and extends along a direction away from the air outlet end of the air flow passage.

6. The electronic atomization device according to claim 5, wherein The number of the protrusions is multiple, and the multiple protrusions are arranged at intervals along the circumferential direction of the first flow passage, so that one end of the noise reduction structure away from the air outlet end of the airway structure presents a structure with undulations.

7. The electronic atomization device according to claim 6, wherein The protrusion is a toothed structure, and the toothed structure includes a tooth root, a tooth top and a tooth profile surface, and the tooth profile surface is located between the tooth root and the tooth top.

8. The electronic atomization device according to claim 7, characterized in that, There is a gap between the tooth profile surface of the toothed structure close to the inner wall surface of the structure body and the tooth profile surface of another adjacent toothed structure; or, the tooth profile surface of the toothed structure close to the inner wall surface of the structure body intersects with the tooth profile surface of another adjacent toothed structure.

9. The electronic atomization device according to claim 7, wherein Along the air flow direction in the air flow passage, the cross-sectional area of the toothed structure gradually decreases; along the direction away from the axis of the first flow passage, the tooth width of the toothed structure remains unchanged or gradually decreases.

10. The electronic atomization device according to any one of claims 7 to 9, characterized in that, A generatrix is formed between the inner wall surface of the toothed structure and the tooth profile surface; and / or, a generatrix is formed between the inner wall surface of the toothed structure and the tooth top; and / or, a generatrix is formed between the inner wall surface of the toothed structure and the tooth root.

11. The electronic atomization device according to any one of claims 7 to 9, characterized in that, The outer wall surface of the toothed structure is smoothly transitioned with the tooth profile surface; and / or, the outer wall surface of the toothed structure is smoothly transitioned with the tooth top; and / or the outer wall surface of the toothed structure is smoothly transitioned with the tooth root.

12. The electronic atomization device according to any one of claims 7 to 9, characterized in that, Any two of the toothed structures are the same or different, and / or the toothed structure is one of a straight tooth, an inclined tooth, a spiral tooth, and a bevel tooth.

13. The electronic atomization device according to claim 12, wherein The cross-section of the toothed structure along the circumferential direction of the first flow passage is one of a serrated shape, a petal shape, or a mathematical function waveform diagram.

14. The electronic atomization device according to claim 1, wherein, The noise reduction structure is integrally formed with the air duct structure; alternatively, the noise reduction structure is embedded in the air duct structure; alternatively, the noise reduction structure is sleeved on the outer periphery of the air duct structure; alternatively, one end face of the noise reduction structure is fixedly connected to the end face of the air duct structure.

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